Input Voltage Range : 1.8V ~ 5.5V

Applications

Output Voltage Range : 2.5V ~ 5.2V

Palm top computers, PDAs

Oscillator Frequency : 300kHz

On Board Local Power Supplies

Maximum Output Current : 80mA (3.6

→5V step-up)

Various Battery Powered Devices

PFM (pulse skip) Operation During Light Loads (XC9802)

CE (chip enable) Function

MSOP-8A and USP-8 Packages

General Description

Features

Input Voltage Range : 1.8V

Output Voltage Range : 2.5V

Small Input Current : 80

µA (no load:XC9802)

Output Current : 80mA (3.6V

→ 5V step-up)

Oscillator Frequency : 300kHz

Stand-By Current (CE 'L') : 2.0

µA (max)

Can be used as a Step-Up Doubler (sense = 0V)

MSOP-8A and USP-8 Package

Pin Configuration

Pin Assignment

MSOP-8A USP-8

1

1

SENSE

22

CE

3

3

VIN

4

4

GND

5

5

PGND

6

6

C1 -

7

7

C1 +

8

8

VOUT

Selection Guide

SERIES

XC9801

pulse skip

×

XC9802

pulse skip

ο

Ordering Information

XC9801/02

DESIGNATOR

B

3

K

D

Package :USP-8

R

L

* Avoid the following condition

VIN < (VOUT/2) or VIN ³ VOUT

Embossed tape. Standard Feed

Embossed tape. Reverse Feed

Step-Up Charge Pump ICs

March 1, 2003, V6

FUNCTION

25~52

Oscillator Frequency : 300kHz

Package : MSOP-8A

DESCRIPTION

Power Ground

True Logic Level at CE Pin : Positive

Output Voltage* 5V: standard 2.5V ~ 5.2V: semi-custom

5.0V

→

=5,

=0

Output Voltage Monitor

Chip Enable

Input (power supply)

Ground

XC9801/02 Series

External Capacitor

-

The XC9801 series are fixed regulated voltage step-up charge pump ICs which

provide stable, highly efficient, positive voltages with the only external

components required being 2 capacitors.

Since regulating is done via the control of the charge pump's gate voltage

waveform, ripple is minimal. Output voltage is selectable in 0.1V steps within a

2.5V ~ 5.2V range.

Control of XC9802 switches to PFM (pulse skip) during light loads without

affecting output impedance or ripple so that the IC is protected against drops in

efficiency. Connecting the SENSE pin to the GND pin allows the IC to be used

as a voltage doubler.

As well as the ultra small MSOP-8A and USP-8 packages, the small

consumption current and high efficiencies of the series make the XC9801

suitable for use with all types of battery operated applications.

PIN NUMBER

PIN NAME

FUNCTION

External Capacitor +

Output

SENSE 1

CE 2

VIN 3

GND 4

8 VOUT

7 C1 +

6 C1 -

MSOP-8A

(TOP VIEW)

SENSE 1

CE 2

VIN 3

GND 4

8 VOUT

7 C1 +

6 C1 -

5 PGND

USP-8

(TOP VIEW)

1