CM2855

Champion Microelectronic Corporation

Page 1

GENERAL DESCRIPTION

FEATURES

The CM2855 family is positive, linear regulators featured low

quiescent current (30µA typ.) with low dropout voltage,

making them ideal for battery applications. The space-saving

SOT-23-6 package is attractive for “Pocket” and “Hard Held”

applications.

These rugged devices have both Thermal Shutdown, and

Current Fold-back to prevent device failure under the “Worst”

of operating conditions.

An additional feature is a “Power Good” detector, which pulls

low when the output is out of regulation.

The CM2855 is stable with an output capacitance of 2.2µF or

greater.

Very Low Dropout Voltage

Low Current Consumption: Typ. 30µA, Max. 35µA

High Accuracy Output Voltage: +/- 2.5%

Guaranteed 300mA Output

Input Range of 2.6V to 7.0V

Thermal Shutdown

Current Limiting

Power Good Output Function

Compact Package: SOT-23-6

Adjustable Output Voltages

Short Circuit Current Fold-Back

Low Temperature Coefficient

APPLICATIONS

Battery-powered devices

Personal communication devices

Home electric/electronic appliances

PC peripherals

TYPICAL APPLICATIONS

IN

OUT

EN

C M 2855

PG

GND

ADJ

IN

OU T

5V

C1

1u F

C3

2.2u F

R1

R2

Note:

1. Suggest to add a small Cap 100pF between OUT and connection of R1and R2 to get less VOUT ripple

Vout = Vref * (1 + R1/R2); Vref = 1.176V

2. Enable pin can not be floating.