LT1946A Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LT1946A

2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start

Linear Technology 

BLOCK DIAGRA

LT1946A

SS

VC COMP

8

1

7

VIN 6

VOUT

R1 (EXTERNAL)

FB

R2 (EXTERNAL)

SHDN

SHUTDOWN

3

1.25V

REFERENCE

0.5V

4µA

+

A1

–

+

A3

–

120k

90pF

COMPARATOR

–

A2

+

R

Q

S

Σ

RAMP

GENERATOR

÷3

2.7MHz

OSCILLATOR

2

FB

Figure 2. Block Diagram

DRIVER

+

–

5 SW

Q1

0.01Ω

4 GND

EXPOSED

PAD

1946A F02

sn1946a 1946afs

5

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