LX1665ACDW datasheet(6/17 Pages) MICROSEMI

Part #	LX1665ACDW

Description	DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

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Manufacturer	MICROSEMI [Microsemi Corporation]

Direct Link	http://www.microsemi.com

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DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

LX1664/64A, LX1665/65A

PRODUCT DA T ABOOK 1996/1997

Rev. 1.2 11/99

6

P RODUCTION D ATA S HEET

BLOCK DIAGRAM

UVLO

10.6/10.1

V

CC

2V Out

2V REF

Internal

V

CC

Trimmed

V

REG

Error Comp

CS Comp

40mV

100mV

1

2

3

S

PWM Latch

Q

RQ

R DOM

Off-Time

Controller

DAC

13

C

T

V

CC_CORE

INV

SS

DAC OUT

4

5

VID0

VID1

6

VID2

7

VID3

8

VID4

OV Comp

UV Comp

Break

Before

Make

SYNC EN

Comp

10

PWRGD*

12

OV*

14

V

CC

15

BDRV

16

GND

17

TDRV

18

V

C1

LX1665/1665A ONLY

Note: Pin numbers are correct for LX1665/1665A, 18-pin package.

* Not connected on LX1664/1664A.

** 60mV in LX1664A/1665A.

Linear Op Amp

11

L

DRV

9

L

FB

1.5V

0.7V

**

10k

FIGURE 5 — LX1664/1665 Block Diagram

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LX1665ACDW Datasheet(PDF) 6 Page - Microsemi Corporation

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