Linear Low Dropout (LDO)Regulator Solutions€¦ · LINEAR LDO REGULATOR SOLUTIONS 1 High Voltage PNP Positive Linear Regulators PNP family features: • Rugged and Hard to Kill •

VOL 2

High Performance Analog ICs

Linear Low Dropout (LDO)Regulator Solutions

LINEAR LDO REGULATOR SOLUTIONS

IntroductionWe offer a broad line of high performance low dropout (LDO) linear regulators with fast

transient response, excellent line and load regulation, and very wide input voltage range

from 0.9V to 100V. Output currents range from 20mA to 10A, with positive, negative and

multiple output versions available. Many devices offer output voltage operation <0.8V and

some feature operation as low as 0V, even with a single supply. Most are stable with ceramic

output capacitors. Our PNP-based linear regulators offer reverse-input, reverse-output, and

reverse-current protection. Our LDO+™ devices include monitoring of voltage, current,

temperature and diagnostic flags that indicate fault conditions. LDO regulators can be

applied in virtually any application. For the most current product information, please visit

www.linear.com.

Contents Single Output LDO Regulators

Positive

High Voltage PNP ............................................................................................................................1

PNP .................................................................................................................................................2-3

Micropower PNP..............................................................................................................................4

NPN (2nd Generation) ......................................................................................................................6-7

NPN (1st Generation) .......................................................................................................................8

Very Low Dropout (VLDO) ................................................................................................................9

NMOS for Digital ICs ........................................................................................................................10

Radiation Hardened (RH) .................................................................................................................13

Negative

NPN .................................................................................................................................................11

Radiation Hardened (RH) .................................................................................................................13

Dual Output LDO Regulators

Positive ....................................................................................................................................................5

Positive/Negative .....................................................................................................................................11

LDO Controllers

Positive ....................................................................................................................................................12

Current Sources

Current Sources ......................................................................................................................................7

1LINEAR LDO REGULATOR SOLUTIONS

High Voltage PNP Positive Linear Regulators

PNP family features:

•Rugged and Hard to Kill

•Up to 80VIN Continuous Operation

•Low Output Voltage Noise

•Extensive Reverse Protection for Harsh Environments in Automotive, Avionics and Industrial Applications

LT3011 Actual Size Demo Board


LT3013: 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD

Dropout Voltage

Dropout Voltage

LT®3011: 50mA, 3V to 80V Low Dropout Micropower Linear Regulator with PWRGD

1µF

VIN3V TO80V

VOUT5V50mA

1µF750k

249k

1.6M

IN

SHDN

PWRGD

OUT

ADJ

CTGND

1000pF

POWER GOOD

OUTPUT CURRENT (mA)

0

250

300

350

40

200

150

10 20 30 50

100

50

0

DROP

OUT

VOLT

AGE

(mV)

OUTPUT CURRENT (mA)

0

250

300

400

350

200

200

150

50 100 150 250

100

50

0

DROP

OUT

VOLT

AGE

(mV)

LT3011

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)

Reference Voltage (V)

Dropout Voltage (V@IOUT)

Typ IQ (Supply) (μA)

Output Voltage (V)

Noise (µVRMS) or % of VOUT

Temperature Grade Package

High Voltage PNP Positive Linear Regulators

LT3014 0.02 3.0 80 1.22 0.35 7 Adj (1.22 to 60) 115 E I TSOT-5, 3x3 DFN-8

LT3014HV 0.02 3.0 100 1.22 0.35 7 Adj (1.22 to 60) 115 E I TSOT-5, 3x3 DFN-8

LT3014B 0.02 3.0 80 1.22 0.35 7 Adj (1.22 to 60) 115 E I TSOT-5, 3x3 DFN-8

LT3014BHV 0.02 3.0 100 1.22 0.35 7 Adj (1.22 to 60) 115 E I TSOT-5, 3x3 DFN-8

LT3010 0.05 3.0 80 1.275 0.30 30 Adj (1.275 to 60), 5 100 E H MP MSOP-8E

LT3011*† 0.05 3.0 80 1.24 0.30 45 Adj (1.24 to 60) 100 E I H MSOP-12E, 3x3 DFN-10

LT3012 0.25 4.0 80 1.24 0.40 40 Adj (1.24 to 60) 100 E H TSSOP-16E, 3x4 DFN-12

LT3012B 0.25 4.0 80 1.24 0.40 40 Adj (1.24 to 60) 100 E TSSOP-16E, 3x4 DFN-12

LT3013*† 0.25 4.0 80 1.24 0.40 65 Adj (1.24 to 60) 100 E H MP TSSOP-16E, 3x4 DFN-12

LT3013B*† 0.25 4.0 80 1.24 0.40 65 Adj (1.24 to 60) 100 E TSSOP-16E, 3x4 DFN-12

* Power Good † LDO+

1µF

VIN5.4V TO80V

VOUT5V250mA

3.3µF750k

249k

1.6M

IN

PWRGD

OUT

ADJ

CTGND

1000pF

LT3013

SHDN

LINEAR LDO REGULATOR SOLUTIONS2

PNP Positive Linear Regulators

PNP family features:


•Wide Voltage Range

•Low Dropout Voltage

•Fast Transient Response and Extensive Reverse Protection

•Precision Current Limits



LT3055: 500mA Linear Regulator with Precision Current Limit and Diagnostics

Transient Response with Cable Drop Compensation (CDC)

External Current Limit RIMAX = 604Ω

LT3086: 1.5A Rail-to-Rail, Low Dropout PNP Linear Regulator with Monitoring and Cable Drop Compensation

TEMPERATURE (°C)

–75

CURR

ENT

LIM

IT F

AULT

THR

ESHO

LD (m

A)

510

530

550

125

490

470

500

520

540

480

460

450–25 25 75–50 1500 50 100 175

VOUT(NOMINAL) = 5V

VIN = 7V

VIN = 5.6V

LT3055

IN

SHDN

TRACK

TEMP

IMON

ILIM

OUT

SET

CDC

PWRGD

RPWRGD

VPWRGD

*SEE APPLICATIONS INFORMATION FOR INDUCTANCE EFFECTS ASSOCIATED WITH RWIRE

GND

LT3086VIN6V TO15V

TO ADC0.8V AT 2.24A

FULL-SCALE

VTEMP10mV/°C

25°C = 250mV

VOUT

10µF 10µFRSET90.9k + 1.1k1%

RCDC1%

RCDC 1%

RLINE1

CABLE

RLINE2

RMON357Ω

1%

82.5k1%

100kVLOAD5V AT2.1A

LOAD

08 0 160 560 640 720 800240 320 400 480TIME (µs)

OUTP

UT V

OLTA

GE (V

)LO

ADCU

RREN

T (A

)

5.8

5.6

5.2

4.8

4.4

2

5.4

5.0

4.6

4.2

1

0

VIN = 6VRMON = 357RWIRE = 0.24RCDC = 46.4k

VOUT WITH CDC

VLOAD WITHOUT CDC

VLOAD WITH CDC

ILOAD = 0.5A TO 1.5A


Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



PNP Positive Linear Regulators

LT1761 0.1 1.8 20 1.22 0.30 20 Adj (1.22 to 19.5), 1.2, 1.5, 1.8, 2, 2.5, 2.8, 3, 3.3, 5

20 E I MP TSOT-5

LT3050§ 0.1 1.6 45 0.60 0.34 45 Adj (0.6 to 44.5), 3.3, 5

30 E I MP 2x3 DFN-12, MSOP-12E

LT3060 0.1 1.6 45 0.60 0.30 40 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5, 15

30 E I H MP 2x2 DFN-8, TSOT-8

LT3061# 0.1 1.6 45 0.60 0.25 45 Adj (0.6 to 19) 30 E I H MP 2x3 DFN-8, MSOP-8E

LT1020 0.125 4.5 36 2.50 0.40 40 Adj – C I SO-16, DIP-14

LT1120/A 0.125 4.5 36 2.50 0.40 40 Adj – C I SO-8, DIP-8

LT1121/A/HV 0.15 4.2 30/36 3.75 0.42 30 Adj (3.75 to 29/35), 3.3, 5

– C I SOT-223, SO-8, TO-92, DIP-8

LT1762 0.15 1.8 20 1.22 0.27 25 Adj (1.22 to 19.5), 2.5, 3, 3.3, 5

20 E MSOP-8

LT3062 0.2 1.6 45 0.60 0.30 45 Adj (0.6 to 40) 30 E I H MP 2x3 DFN-8, MSOP-8E

LT3063# 0.2 1.6 45 0.60 0.30 45 Adj (0.6 to 19) 30 E I H MP 2x3 DFN-8, MSOP-8E

LT1521 0.3 4.3 20 3.75 0.50 12 Adj (3.75 to 19), 3, 3.3, 5

– C I SOT-223, SO-8, MSOP-8

LT1579 0.3 2.7 20 1.50 0.40 50 Adj (1.5 to 19), 3, 3.3, 5

– C SO-8, SO-16, SSOP-16

LT1962 0.3 1.8 20 1.22 0.27 30 Adj (1.22 to 19.5), 1.5, 1.8, 2.5, 3, 3.3, 5

20 E MSOP-8

LT1763 0.5 1.8 20 1.22 0.30 30 Adj (1.22 to 19.5), 1.5, 1.8, 2.5, 3, 3.3, 5

20 C I MP 3x4 DFN-12, SO-8,

LT3055‡§ 0.5 2.0 45 0.60 0.35 65 Adj (0.6 to 44.5) 25 E I H MP 3x4 DFN-16, MSOP-16E

LT3065‡§ 0.5 2.0 45 0.60 0.30 55 Adj (0.6 to 44.5) 25 E I H MP 3x3 DFN-10, MSOP-12E

LT1129 0.7 4.2 30 3.75 0.40 50 Adj (3.75 to 29), 3.3, 5

– E I MP DD-Pak, SOT-223, SO-8, TO-220, TSSOP-20

LT1965 1.1 1.8 20 1.20 0.31 500 Adj (1.2 to 19.5), 1.5, 1.8, 2.5, 3.3

40 E I H 3x3 DFN-8, MSOP-8E, DD-Pak, TO-220

LT1963/A* 1.5 2.1 20 1.21 0.34 1mA Adj (1.21 to 19.5), 1.5, 1.8, 2.5, 3.3

40 E I MP TSSOP-16E, DD-Pak, TO-220, SOT-223, SO-8

LT3081†§ 1.5 1.2 36 50µA 1.21 1.1mA Adj (0 to 34.5) 27 E I H MP 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak

LT3086‡§ 2.1 1.4 40 400mV/50µA 0.33 1.2mA Adj (0.4 to 32)† 40 E I MP TSSOP-16E, 4x5 DFN-16, DD-Pak, TO-220

LT1528 3.0 3.9 15 3.30 0.60 400 Adj (3.3 to 14), 3.3 – C DD-Pak, TO-220

LT1529 3.0 3.9 15 3.75 0.60 50 Adj (3.75 to 14), 3.3, 5

– C I DD-Pak, TO-220

LT1764/A* 3.0 2.7 20 1.21 0.34 1mA Adj (1.21 to 19.5), 1.5, 1.8, 2.5, 3.3

40 E MP DD-Pak, TO-220, TSSOP-16E

*“A” Versions are stable with ceramic capacitors † Single-Resistor VOUT Set ‡ Power Good # Active Discharge § LDO+


Micropower PNP Positive Linear Regulators

Micropower PNP family features:

•Sub-5µA Quiescent Current

•Good Output Noise Performance

•Keep Alive, Real-Time Clock and Remote Monitoring Applications


LT3009: 3µA IQ, 20mA Low Dropout Linear Regulator

Dropout Voltage/Quiescent Current

Dropout Voltage/Quiescent Current

LT3007: 3µA IQ, 20mA, 45V Low Dropout Fault Tolerant Linear Regulator

IN

SHDN

1µF

OUTVIN3.75V TO

20V

GND

VOUT 3.3V20mA

1µF

TEMPERATURE (°C)

DROP

OUT

VOLT

AGE

(mV)

QUIESCENT CURRENT (µA)

400

200

100

50

0

500

300

250

150

5

350

2

3

1

0

6

450

4

ILOAD = 20mADROPOUTVOLTAGE

IQ

TEMPERATURE (°C)

DROP

OUT

VOLT

AGE

(mV)

QUIESCENT CURRENT (µA)

400

200

100

50

0

500

300

250

150

4.0

350 3.5

2.0

1.0

0.5

0

5.0

450 4.5

3.0

2.5

1.5

IQ

ILOAD = 20mA

DROPOUTVOLTAGE

LT3009-3.3

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



Micropower PNP Positive Linear Regulators

LT3009 0.02 1.6 20 0.60 0.28 3 Adj (0.6 to 19.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5

150 E I SC70-8, 2x2 DFN-6

LT3007* 0.02 2.0 45 0.60 0.30 3 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5

92 E I TSOT-8

LT3008 0.02 2.0 45 0.60 0.30 3 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5

92 E I MP TSOT-8, 2x2 DFN-6

*FMEA Fault Tolerant version

-50 -25 0 25 50 75 100 125 150

-50 -25 0 25 50 75 100 125 150

IN

SHDN

2.2µF

OUT

SENSE

VIN3.8V TO

45V

GND

LT3007-3.3

VOUT 3.3V20mA

1µF


10µF 10µF

10µF

0.01µF

0.01µF10µF

5.4V TO20V

5V OUT AT 150mA20µVRMS NOISE

–5V OUT AT –150mA30µVRMS NOISE

–5.4V TO–20V

<0.25V = OFF>2V = ON SHDNP

SHDNN

OUTPINP

INN

BYPP

GND

BYPN

OUTN

LT3032-5

Dual Output PNP Linear Regulators

Dual linear regulator family features:

•Highly Compact Solution

•All the Performance Features of our Single PNP Regulators

• Ideal for Core/Logic Combinations



LT3032: Dual 150mA Positive/Negative Low Noise Regulator

Dropout Voltage vs Load Current

10Hz to 100kHz Output Noise

LT3030: Dual 750mA/250mA Low Dropout, Low Noise Micropower Linear Regulator

OUTP 100µV/DIV 20µVRMS

30µVRMS

OUTN 100µV/DIV

1mS/DIV

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



Dual Output Positive Linear Regulators

LT3023 0.1/0.1 1.8 20 1.22 0.30 40 Adj (1.22 to 20) 20 E I MSOP-10E, 3x3 DFN-10

LT3027 0.1/0.1 1.8 20 1.22 0.30 50 Adj (1.22 to 20) 20 E I MSOP-10E, 3x3 DFN-10

LT3024 0.1/0.5 1.8 20 1.22 0.30 60 Adj (1.22 to 20) 20 E I TSSOP-16E, 3x4 DFN-12

LT3028 0.1/0.5 1.8 20 1.22 0.30 60 Adj (1.22 to 20) 20 E I TSSOP-16E, 3x5 DFN-16

LT3029 0.5/0.5 1.8 20 1.215 0.30 110 Adj (1.215 to 19.5) 20 E I H MP MSOP-16E, 3x4 DFN-16

LT3030* 0.75/0.25 1.7 20 1.22 0.30 195 Adj (1.22 to 19.5) 20 E I H MP 4x5 QFN-28, TSSOP-20E

Dual Output Positive and Negative Linear Regulators

LT3032 ±0.15 ±1.8 ±20 ±1.22 0.30/-0.34 60 Adj, ±3.3, ±5, ±12, ±15 20 / 30 E I MP 3x4 DFN-14

* Power Good

DROP

OUT

VOLT

AGE

(mV)

OUTPUT CURRENT (mA)0

500

450

400

350

300

250

200

150

100

50

0450150 750300 60037575 675225 525

OUT1

TJ = 25°C

OUT2

GND

1M

IN1

IN2

SHDN1

SHDN2

PWRGD1

PWRGD2

OUT1

BYP1

ADJ1

OUT2

BYP2

ADJ2

1M

3.3µF 10µF

3.3µF

10nF

VIN2.5V

VOUT11.8V750mA

VOUT21.5V250mA

113k1%

237k1%

10nF54.9k1%

237k1%

LT3030



Single Resistor Set, Current Reference-Based NPN/PNP Positive Linear Regulators

Second generation NPN family features:

•Operation Down to 0V Output

•Direct Paralleling to Spread PCB Heat

•Low Noise and Simplicity with a Single Resistor VOUT Set Capability

•Always Operates in Unity-Gain

— Bandwidth Independent of Output Voltage

— Output Noise Independent of Output Voltage

— Load Regulation Independent of Output Voltage

LT3083: Adjustable 3A Single Resistor Low Dropout Regulator

VCONTROL

OUTIN

SET RMIN909

*10µF10µF

VOUT = 0.9VIMAX = 3A

VIN1.5V

4.7µF

VCONTROL3.3V

RSET18.2k1%

0.1µF

*OPTIONAL FOR MINIMUM 1mA LOAD REQUIREMENT

Ω

LT3083


LT3081: Wide Safe Operating Area (SOA)


LT3081: 1.5A Single Resistor Rugged Linear Regulator with Monitors

LT3081IncreasedSafe Area

IN

1k 6.04k

10µF*

*OPTIONAL

IMON ILIM

OUT

+–

LT3081

ILOAD/5000

IOUT1.5V1.5A

VIN

300 *

1k

1µA/°C

SET

30.1k

TEMP

50µA

Ω

Older Regulator

Older Regulator

0 5 10 15 20 25 30 35 40

Curr

ent L

imit

(A)

3.0

2.5

2.0

1.5

1.0

0.5

0

Input-to-Output Differential Voltage (V)


Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)

Reference Current (µA)



Output Voltage (V)

Noise (µVRMS) w/ CSET


0V Output Capable, Single-Resistor Set, Current Reference-Based NPN Positive Linear Regulators

LT3082 § 0.2 1.2 40 10 1.30 500μA Adj (0 to 38.5) 33 E I MP 3x3 DFN-8, TSOT-23-8, SOT-223

LT3085 0.5 1.2 36 10 0.275‡ 1mA Adj (0 to 35.7) 33 E I MP 2x3 DFN-6, MSOP-8E

LT3080 1.1 1.2 36 10 0.35‡

(1.35, SOT-223)1mA Adj (0 to 35.7) 40 E I 3x3 DFN-8, MSOP-8E, SOT-223,

TO-220, DD-Pak

LT3080-1* 1.1 1.2 36 10 0.35‡ 1mA Adj (0 to 35.7) 40 E I 3x3 DFN-8, MSOP-8E

LT3081#¤ 1.5 1.2 36 50 1.23 1.1mA Adj (0 to 34.5) 40 E I 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak

LT3086#§¤ 2.1 1.4 40 50 0.33 1.2mA Adj (0.4 to 32) 40 E I MP 4x5 DFN-16, TSSOP-16E, TO-220, DDPak

LT3083 3 1.2 8/18† 50 0.31‡ 1mA Adj (0 to 7.5 or 0 to 17.5†) 40 E I MP 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak

* Integrated Ballast Resistor † DD-Pak and TO-220 Packages ‡ Dual-Supply Operation #Power Good § PNP pass transistor ¤ LDO+

Part Number

Output Current Range (mA)

Initial Accuracy (%)

Min VIN (V)

Max VIN (V)

Current Regulation (ppm/V)

Quiescent Current (µA)

Reverse Voltage Protection

Reverse Current Protection

Current Limiting

Thermal Protection


Current Sources

LM334 1µA to 10mA 3 0.8 40 200 280 — yes — — C T0-92, SO-8

LT3092 0.5 to 200 1 1.2 40 <10 300 yes yes yes yes E I MP TSOT-8, SOT-223, 3x3 DFN-8


OUTPUT CURRENT (A)0IN

PUT/

OUTP

UT D

IFFE

RENT

IAL

(V)

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5IFULL LOAD

VIN 4.75V

C110µF

* REQUIRED FOR STABILITY LT1584: C2 = 22µF, LT1585/LT1587: C2 = 10µF

3.3V7A, 4.6A, 3A

C2*SOLIDTANTALUM

++≥

NPN Positive Linear Regulators

First generation NPN positive linear regulator family:

•Based on Classic 3-Terminal Architecture

•Wide Input Voltage

•Wide Output Voltage

Dropout Voltage vs Output Current

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)



Typ IQ (Supply) (mA)

Output Voltage (V)



NPN Positive Linear Regulators

LT1117 0.8 2.5 15 1.25 1.20 5 Adj, 2.85, 3.3, 5 0.003% C I DD-Pak, SOT-223

LT1118 –0.4/0.8 3.0 15 1.225 1.00 0.6 Adj, 2.5, 2.85, 5 – C SO-8, SOT-223

LT1086 1.5 2.6 25 1.25 1.30 5 Adj, 2.85, 3.3, 3.6, 5, 12 0.003% C I DD-Pak, TO-220

LT1085 3 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% C I DD-Pak, TO-220, TO-3P

LT1587 3 2.7 7 1.25 1.20 8 Adj, 1.5, 3.3, 3.38, 3.45, 3.6 0.003% C DD-Pak, TO-220

LT1585 4.6 2.4 7 1.25 1.10 8 Adj, 1.5, 3.3, 3.38, 3.45, 3.6 0.003% C DD-Pak, TO-220

LT1585A 5 2.5 7 1.25 1.20 8 Adj, 1.5, 3.3 0.003% C DD-Pak, TO-220

LT1084 5 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% C I DD-Pak, TO-220, TO-3P

LT1584 7 2.5 7 1.25 1.25 8 Adj, 3.3, 3.38, 3.45, 3.6 0.003% C I DD-Pak, TO-220

LT1580 7 1.8* 6 1.25 0.54‡ 10 Adj, 2.5 – C I DD-Pak, TO-220

LT1083 7.5 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% C DD-Pak, TO-220

LT1581 10 1.7* 6 1.25 0.43‡ 10 Adj, 2.5 – C TO-220

* Dual-Supply Operation

LT1584-3.3 LT1585-3.3 LT1587-3.3

LT®1584/5A/7: Low Dropout Fast Response Positive Regulator Adjustable & Fixed


BIAS0.1µF

1.5V

1µF

0.1µF

Li-IonOR

3-CELLNiMH

IN

SHDN

OUTVOUT = 1.2VIOUT 500mA

SENSE

GNDOFF ON

1.5V HIGHEFFICIENCY

DC/DCBUCK

≤

IN10µF

VIN1.2V

VOUT0.9V1A

SHDN

6981%

2001%

OUT

ADJ

GND

10µF

Very Low Dropout (VLDO) Positive Linear Regulators

VLDO™ regulator family features:

• Input Voltage Operation Down to 0.9V

•Output Voltage Down to 0.2V

•Typical Dropout Performance ≤ 150mV Enabling low VIN-to-VOUT Differential Applications

LTC3025-x Actual Size Demo Board


LTC®3025-x: 500mA Positive Low Noise LDO Regulator

Minimum Input Voltage

1MHz VIN Supply Rejection

LT3022: 1A, 0.9V to 10V, Very Low Dropout Linear Regulator

TEMPERATURE (°C)–50

MIN

IMUM

INPU

T VO

LTAG

E (V

)

0.3

0.9

1.0

1.1

0 50 75

0.1

0.7

0.5

0.2

0.8

0

0.6

0.4

–25 25 100 125

IL = 1A

VIN (V)1.2

0

REJE

CTIO

N (d

B)

5

15

20

25

50

35

1.6 2.0 2.2

10

40

45

30

1.4 1.8 2.4 2.6

BIAS = 3.6VVOUT = 1.2V

IOUT = 100mAIOUT = 300mA

COUT = 1µF

COUT = 10µF

LT3022

LTC3025-2

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



VLDO Positive Linear Regulators

LT3020 0.1 0.9 10 0.20 0.15 120 Adj (0.2 to 9.5), 1.2, 1.5, 1.8

245 E I MSOP-8, 3x3 DFN-8

LTC1844 0.15 1.6 6.5 1.25 0.11 35 Adj (1.25 to 6), 1.5, 1.8, 2.5, 2.8, 3.3

60 E TSOT-5

LTC3025 0.3 0.9 5.5 0.40 0.045 54 Adj (0.4 to 3.6) 80 E 2x2 DFN-6

LTC3035 0.3 1.7 5.5 0.40 0.05 100 Adj (0.4 to 3.6) 150 E 2x3 DFN-8

LT3021 0.5 0.9 10 0.20 0.16 120 Adj (0.2 to 9.5), 1.2, 1.5, 1.8

300 E I 5x5 DFN-16, SO-8

LTC3025-x 0.5 0.9 5.50 0.40 0.08 54 Adj (0.4 to 3.6), 1.2, 1.5, 1.8

80 E I 2x2 DFN-6

LT3022 1.0 0.95 10 0.20 0.15 400 Adj (0.2 to 9.5), 1.2, 1.5, 1.8

165 E I 3x5 DFN-16, TSSOP-16E

LTC3026‡ 1.5 1.14 3.5/5.5 0.40 0.10 400# Adj (0.4 to 2.6) 110* or 210† E I 3x3 DFN-10, MSOP-10E

* Boost Disabled † Boost Enabled ‡ LDO+ # VIN = 3.5V


NMOS Positive Linear Regulators for Digital IC Power

Our family of NMOS positive linear regulators has the performance demanded by modern high current, low voltage digital ICs:

•Ultrafast Transient Response

•Very Low Dropout Voltage

•High Output Current

•Low Output Voltage

•Good Power Supply Rejection Ratio (PSRR)

•VIOC—Control of Upstream Buck Regulator for VIN to VOUT Regulation across LT3070/71

LT3071: 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining

Dropout Voltage

Transient Load Response

LT3070: 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator

BIAS

50k

IN

EN

VO0

VO1

330µF

2.2µF

2.2µF*

0.01µF1nF

4.7µF*

*X5R OR X7R CAPACITORS

10µF*

PWRGD

VOUT0.9V5A

VO2

MARGSEL

MARGTOL

VIOC

SENSE

OUT

VBIAS2.2V TO 3.6V

VIN1.2V PWRGD

REF/BYPGND

BIAS

50k

IN

EN

VO0

VO1

330µF

2.2µF

2.2µF*

0.01µF1k

*X5R OR X7R CAPACITORS

1nF

NC

4.7µF* 10µF*

PWRGD

VOUT0.9V5A

VMON2V AT 5AFULL SCALE

VO2

MARGA VIOC

SENSE

OUT

VBIAS2.2V TO 3.6V

VIN1.2V PWRGD

REF/BYPIMON

GND

OUTPUT CURRENT (A)

0

90

120

150

4

60

30

01 2 3 5

VOUT = 1.8VVBIAS = 3.3V

VOUT = 0.8VVBIAS = 2.5V

VIN = VOUT(NOMINAL)

LT3070

LT3071

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



NMOS Positive Linear Regulators

LT3070*‡# 5 0.95 3 0.6 0.09 1.1mA Adj (0.8 to 1.8) 25 E I MP 4x5 QFN-28

LT3071†‡ 5 0.95 3 0.6 0.09 1.1mA Adj (0.8 to 1.8) 25 E I MP 4x5 QFN-28

LT3072‡§ 2.5/2.5 0.9 4 0.6 0.085 1.5/1.5mA Adj (0.6 to 3.3) 20 E I MP 4x7 QFN-36, TSSOP-38E

* Digital Margining † Analog Output Margining ‡ LDO+ #Power Good § Future product, contact factory for information.

VOUT50mV/DIV

AC-COUPLED

IOUT2A/DIV

I = 500mATO 5A

20µs/DIVVOUT = 1VCOUT = 10µF + 4.7µF + 2.2µFIOUT tRISE/tFALL = 100ns


DROP

OUT

VOLT

AGE

(mV)


Negative Linear Regulators

Rugged and hard to kill negative linear regulator family features:


•Wide Voltage Range

•Low Dropout Voltage

•Reverse Output Protection


LT3090: 36V, 600mA Negative Linear Regulator with Programmable Current Limit

Dropout Voltage

Output Noise: 10Hz to 100kHz

LT3015: 1.5A, Low Noise, Negative LDO Regulator with Precision Current Limit

GND

SHDN ADJ

IN OUT

10µF 10µF

3.48k1%

10.5k1%VIN

–5.5V TO –30V

VOUT–5V –1.5A

LT3015

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



Negative Linear Regulators

LT1964 0.2 –1.9 –20 –1.22 0.34 30 Adj, –5 30 E I TSOT-5, 3x3 DFN-8

LT1175 0.5 –4.3 –20 –3.8 0.50 45 Adj, –5 134 C I MP SOT-223, SO-8, DIP-8, DD-Pak, TO-220

LT3090* 0.6 –1.5 –36 50µA 0.30 1mA Adj (0 to –32) 18 E I H MP 3x3 DFN-12, MSOP-12E

LT3015 1.5 –1.8 –30 –1.22 0.31 1.1mA Adj (–1.22 to –30) 60 E I MP DD-Pak, TO-220, MSOP-12E, 3x3 DFN-8

LT1185 3.0 –4.3 –35 –2.37 0.67 2.5mA Adj (–2.37 to –30) 49 C I DD-Pak, TO-220

Dual Output Positive and Negative Linear Regulators

LT3032 ±0.15 ±1.9 ±20 ±1.22 0.30/-0.34 55 Adj, ±3.3, ±5, ±12, ±15

20 / 30 E I MP 3x4 DFN-14

* LDO+

LOAD CURRENT (mA)

00

DROP

OUT

VOLT

AGE

(V)

0.05

0.15

0.20

0.25

–1000

0.45

0.10

–500–250 –1250–750 –1500

0.30

0.35

0.40TJ = 25°C

VIN: –3.5V VOUT: –2VCOUT: 4.7µF, CSET: 0.1µFIL: 600mA

VOUT100µV/DIV

1ms/DIV

LT3090VOUT–2.5VMAX IOUT600mA

SET GND

ILIMSHDN

–

+

50µA

IMONP OUT

IMONN

0.1µF

4.7µF

49.9k3.32k

TO ADC (IMON)

INVIN–3V TO

–10V

10k

3.3V

4.7µF

0.1µF


Linear Regulator Controllers

Linear regulator controller family features:

•An Off-Board Power Device

•Reduced On-Chip Power Dissipation

•Spreads Heat More Evenly on a PC Board


LT1573: Low Dropout Regulator Controller

Transient Response for 0.1A to 4A Output Load Step

Transient Response for 0.2A to 5A Output Load Step

LT3150: Fast Transient Response, Low Input Voltage, LDO Controller

Part Number

Output Current (A)

Min VIN (V)

Max VIN (V)




Output Voltage (V)



Discrete Pass Element Drivers and Regulators—Very Low Dropout

LT1123 3 n/a 30 5 –* 700 5 – C SOT-223, TO-92

LT1573 5* 2.8 10 1.265 –* 1.7mA Adj, 2.5, 2.8, 3.3 – C I SO-8

LT3150 10* 1.4 10 1.23 0.13 12mA Adj – C SSOP-16

LT1575 –* n/a 22 1.21 –* 12mA Adj, 1.5, 2.8, 3.3, 5 – C DIP-8, SO-8

LT1577 –* n/a 22 1.21 –* 12mA Adj, 2.8, 3.3 – C SO-16

* Depends On Selection of External Pass Device

+

VIN2FB1SHDN2SWGNDGNDGND

SWVIN1

SHDN1IPOSINEG

GATEFB2

COMP

MBR0520L

L110µH

1.5k

CIN: PANASONIC SP SERIES EEFUE0E221R 20%C1: AVX TAJA475M020R 20V 20%L1: MURATA LQH32CN100K11 OR SUMIDA CDRH3D16100

2431%

10201%

C14.7µF

+ CIN220µF2.5Vx2

VIN1.8V

VOUT1.5V4A

6.19k1%

1.37k1%

Si4410

2.2µF x10X5R CERAMIC0805 CASE

5.1

6800pF 50pF

LT3150

50µV/DIV

2A/DIV

20μS/DIV

50µV/DIV

2.5A/DIV

10μS/DIV

+

COMP

VOUT

VIN

DRIVE

FB

LATCH

SHDN

GND

LT1573

CTIME

COUT2220FTANT

COUT11FCERX 24

CC100pF

VIN5V

RC1k

RD24

VOUT3.3V

GND

RB50

R11.6k

R21k

LOAD+ +

QOUTMOTOROLAD45H11

VOUT = 1.265V (1 + R1/R2)FOR T < 45C, COUT1 = 24 x 1F Y5V CERAMIC SURFACE MOUNT CAPACITORS.FOR T > 45C, COUT1 = 24 x 1F X7R CERAMIC SURFACE MOUNT CAPACITORS.PLACE COUT1 IN THE MICROPROCESSOR SOCKET CAVITY

CIN100FTANT


Radiation Hardened (RH) Linear Regulators

Linear Technology manufactures a broad range of rugged radiation tolerant (rad hard) voltage regulators that are ideal for space and military applications. We also partner with several outside vendors to provide monolithic packaged and hybrid products of Linear Technology RH DICE.

ReferencesRobert Dobkin, New Linear Regulators Solve Old Problems,

Linear Technology Corporation, Application Note 142, August 2013

Jim Williams, Load Transient Response Testing for Voltage Regulators, Linear Technology Corporation, Application Note 104, October 2006.

Jim Williams, Minimizing Switching Regulator Residue in Linear Regulator Outputs, Linear Technology Corporation, Application Note 101, July 2005.

Todd Owen and Jim Williams, Performance Verification of Low Noise, Low Dropout Regulators, Linear Technology Corporation, Application Note 83, March 2000.

Craig Varga, LT1575 Ultrafast Linear Controller Makes Fast Transient Response Power Supplies, Linear Technology Corporation, Application Note 69, September 1996 (see Appendix A, Using PCB Material as Low Value Resistors).

Goran Perica, Ceramic Input Capacitors Can Cause Overvoltage Transients, Linear Technology Corporation, Application Note 88, March 2001.

Bill Roehr, Mounting Considerations for Power Semiconductors, ON Semiconductor, Application Note 1040/D, May 2001.

Tom Gross, LDO Linear Regulators Rival Switchers for Efficiency, Linear Technology Corporation, Linear Technology Magazine, May 2005.

LT1963A 1.5A, Low Noise, Fast Transient Response LDO Regulator data sheet, Linear Technology Corporation.

All reference materials listed above are available at www.linear.com

Videos / Video Product Briefs LT3009 LT3015 LT3070/71 LT3080 LT3081 LT3086 LT3090 LT3092

All videos listed above are available at www.linear.com/solutions/video

Part Number Polarity Output Current (A) Max. VIN (V) Reference Voltage (Adj.) Package

Radiation Hardened (Rad Hard or RH) Linear Regulators

RH1084 Positive 5 25 1.25V TO-3

RH1086M Positive 0.5/1.5 25 1.25V Dice, TO–3, TO–39

RH117 Positive 0.5/1.5 40 1.25V Dice, TO–3, TO–39

RH137 Negative 1.5 –30 –1.25V Dice, TO–3, TO–39

RH1573 Positive 5 10 1.265V Dice

RH1185 Negative 3 –35 –2.37V Dice

RH3080* Positive 1 35 10uA Dice

RH3083* Positive 3 23 50µA Dice

* Current Source Reference

Linear Technology Corporation1630 McCarthy Blvd. Milpitas, CA 95035-7417 • Tel: 408-432-1900 • www.linear.com CF061410KU

Sales Of f ices

25%

, Linear Technology, LT, LTC, and the Linear logo are registered trademarks and LDO+ and VLDO are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. © 2014 Linear Technology Corporation.

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Documents

Linear Low Dropout (LDO)Regulator Solutions€¦ · LINEAR LDO REGULATOR SOLUTIONS 1 High Voltage PNP Positive Linear Regulators PNP family features: • Rugged and Hard to Kill •