CS5651GN16 datasheet(1/8 Pages) CHERRY

부품명	CS5651GN16

상세설명	High Performance Dual Channel Current Mode Controller with ENABLE

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제조업체	CHERRY [Cherry Semiconductor Corporation]

홈페이지	http://www.cherrycorp.com/

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1

Features

+

-

+

-

VREF

SYNC

Oscillator

Error

Amp 1

Error

Amp 2

Latching

PWM 2

Latching

PWM 1

VREF

Undervoltage

Lockout

5.0V Ref

VCC

Undervoltage

Lockout

VCC

VFB

1

COMP1

ENABLE2

VFB

2

COMP2

CT

RT

Gnd

Pwr Gnd

Sense2

VOUT

2

Sense1

VOUT

1

s

Oscillator has Precise

Duty Cycle

Limit and Frequency

Control

s

500kHz Current Mode

Operation

s

Automatic Feed Forward

Compensation

s

Separate Latching PWMs

for Cycle-By-Cycle

Current Limiting

s

Internally Trimmed

Reference with

Undervoltage Lockout

s

Switchable Second

Output

s

Two High Current Totem

Pole Outputs

s

Input Undervoltage

Lockout with Hysteresis

Package Options

16L PDIP & SO Wide

High Performance Dual Channel

Current Mode Controller with ENABLE

1

SYNC

2

3

4

5

6

7

8

CT

RT

VFB

1

COMP1

SENSE1

VOUT

1

Gnd

16

15

14

13

12

11

10

9

VCC

VREF

ENABLE2

VFB

2

COMP2

Sense2

VOUT

2

Pwr Gnd

CS5651

Description

The CS5651 is a high performance,

fixed frequency, dual current mode

controller specifically designed for

Off-Line and DC to DC converter

applications. It offers the designer a

cost effective solution with minimal

external components. This integrat-

ed circuit features a unique oscilla-

tor for precise duty cycle limit and

frequency control, a temperature

compensated reference, two high

gain error amplifiers, two current

sensing comparators, and two high

current totem pole outputs ideally

suited for driving power MOSFETs.

One of the outputs, VOUT2 is switch-

able via the ENABLE2 pin.

Also included are protective fea-

tures consisting of input and refer-

ence undervoltage lockouts, each

with hysteresis; cycle-by-cycle cur-

rent limiting; and a latch for single

pulse metering of each output.

The CS5651 is pin compatible with

the MC34065H.

Block Diagram

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

A

Company

®

Rev. 3/9/99

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