LM7705 datasheet(4/22 Pages) TI

Part #	LM7705

Description	LM7705 Low Noise Negative Bias Generator

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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CFLY

CHARGE

PUMP

INVERTOR

CRESERVE

VREF1

PRE

REGULATOR

VCP,IN

fosc

VOUT

VCP,OUT

POST

REGULATOR

Cout

VDD

VSS

VREF2

1

4

5

8

LM7705

SNVS420B – NOVEMBER 2008 – REVISED MARCH 2013

www.ti.com

Connection Diagram

8-Pin VSSOP -Top View

PIN DESCRIPTIONS

Pin Number

Symbol

Description

1

CF+

CFLY Positive Capacitor Connection

2

VSS

Power Ground

3

SD

Shutdown Pin

If SD pin is LOW, device is ON

If SD pin is HIGH, device is OFF

4

VDD

Positive Supply Voltage

5

VSS

Power Ground

6

VOUT

Output Voltage

7

CRES

Reserve Capacitor Connection

8

CF-

CFLY Negative Capacitor Connection

Block Diagram

LM7705

4

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