LT3150CGN datasheet(8/20 Pages) LINER

Part #	LT3150CGN

Description	Fast Transient Response, Low Input Voltage, Very Low Dropout Linear Regulator Controller

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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8

LT3150

3150f

BLOCK DIAGRA S

SW2

NORMALLY

CLOSED

I2

5

µA

–

+

ERROR AMP

COMP

3150 BD02

–

+

COMP1

Q9

SHDN2

VIN2

GND

FB2

R10

5k

SW1

NORMALLY

OPEN

100mV

HYSTERESIS

I1

15

µA

I3

100

µA

–

+

ILIM2 AMP

VTH1

50mV

VTH2

1V

D1

IPOS

INEG

GATE

D2

–

+

COMP2

COMP3

OR2

START-UP

VREF

1.21V

R9

50k

OR1

Q7

Q6

Q5

Q4

Q8

4

5

6

8

R8

(EXTERNAL)

R7

(EXTERNAL)

VOUT

FB2

9

11

12

13

–

+

FF

RQ

S

0.15

Ω

SW

DRIVER

COMPARATOR

2

SHUTDOWN

SHDN1

14

1

–

+

Σ

RAMP

GENERATOR

RC

100k

CC

40pF

1.4MHz

OSCILLATOR

SWGND

3150 BD1

R6

40k

R4

140k

R3

30k

Q2

x10

Q1

Q3

R2

(EXTERNAL)

R1

(EXTERNAL)

R5

40k

VIN2

VIN1

VIN1 3

FB1

FB1 16

GND

15

A2

A1

ILIM1

gm = 77µmhos

Boost Switching Regulator

Linear Regulator Controller

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LT3150CGN Datasheet(PDF) 8 Page - Linear Technology

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