© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

60mA PROGRAMMABLE FIXED

FREQUENCY CHARGE PUMP DOUBLER

SC1464

PRELIMINARY - August 11, 2000

4

PIN DESCRIPTION

Pin#

Pin Name

Pin Function

1

TF1

Binary frequency select pins. The frequency is set according to the following table.

2TF2

3

VO

Voltage output

4

EN

Enable. Pull EN low to reduce the current on VIN to less than 1µA.

5

C+

This pin should be connected to the positive terminal of the external charging capacitor.

6

C-

This pin should be connected to the negative terminal of the external charging capacitor.

7

VIN

Supply voltage input.

8

GND

Ground.

TF1

0

1

TF2

0

32kHz

260kHz

18kHz

1MHz

BLOCK DIAGRAM

Thermal

Shut Down

PIN CONFIGURATION

(MSOP-8)

Top View