ILC6301

100mA DC/DC Converter With KeepAlive™ Output

Impala Linear Corporation

Impala Linear Corporation

1

(408) 574-3939

www.impalalinear.com

Feb 2001

ILC6301 1.1

The ILC6301 series of DC-DC converters represents an

advanced generation of energy resource management IC’s

for battery operated and portable systems. This device

series showcases the unique ability to power down a pri-

mary load while maintaining power regulation to a second-

ary load that must remain continuously active. Termed

“KeepAlive™” (KA), this feature can supply auxiliary power

to serial port receivers, command receivers or control sen-

sors (i.e. IR, RF) while holding other system blocks in stand-

by or power-down mode. Main and KA™ outputs are user

selected via the SEL pin. Overall device control is accom-

plished with the use of the On/Off pin. Only one output is

active at any time.

Both outputs are fixed at either 3.0V or 3.3V. For economy

and efficiency, the architecture utilizes a single coil to gen-

erate each output. The Main output can supply up to 100mA

and the KeepAlive™ section can supply up to 10mA. Each

regulator performs buck or boost functions depending on

trol invokes boost mode operation. The operating range for

The ILC6301 is available in either the conventional SOIC-8

or the space saving MSOP-8 plastic packaging.

• Selectable Main (to 100mA) or KeepAlive™ (to 10mA)

voltage outputs

• Input voltage operating range 1.8V to 6.0V

• 3.0V or 3.3V fixed output voltages (custom

requirements contact Impala)

• Internal controlled synchronous operation requires no

external diode

• Optimized design requires a minimum of external components

One inductor and three capacitors

• Internal oscillator frequency ~ 210kHz ±15%

• Condition Flag output

• Portable and battery operated systems

• Remote data collection terminals

• Designs requiring continuous communications receive

port monitoring

• Systems requiring continuous sensor activation for

event specific detection

• Security devices

• Low duty cycle, NLS medical instrumentation

ILC6301

V

DD

C

byp

On/Off

SELect

V

SS

20µF

20µF

Flag Out

V

OUT MAIN

V

OUT KA

L

X

Advance

General Description

Features

Applications

Typical Circuit