CM2831AIM25 datasheet, PDF - EEWORLD Datasheet

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CM2831AIM25: Description300mA CMOS LDO WITH ENABLE; File Size408KB，12 Pages; ManufacturerETC

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CM2831AIM25 Overview

300mA CMOS LDO WITH ENABLE

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CM2831

300mA CMOS LDO W

ITH

NABLE

GENERAL DESCRIPTION

The CM2831 family is a positive voltage linear regulator

developed utilizing CMOS technology featured low quiescent

current (30µA typ.), low dropout voltage, and high output

voltage accuracy, making them ideal for battery applications.

EN input connected to CMOS has low bias current. The

space-saving SOT-23-5 package is attractive for “Pocket” and

“Hand Held” applications.

These rugged devices have both Thermal Shutdown, and

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

of operating conditions.

In application requiring a low noise, regulated supply, place a

1000pF capacitor between Bypass and Ground.

The CM2831 is stable with an output capacitance of 2.2µF or

greater.

FEATURES

Very Low Dropout Voltage

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

Output Voltage: 1.5V, 1.8V, 1.9V, 2.2V, 2.5V, 2.7V, 2.8V,

2.9V, 3.0V, 3.3V, 3.5V, 3.6V, and 3.8V

High Accuracy Output Voltage: +/- 1.5%

Guaranteed 300mA Output

Input Range of 2.6V to 7.0V

Thermal Shutdown

Current Limiting

Compact Package: SOT-23-5

Factory Pre-set Output Voltages

Short Circuit Current Fold-Back

Low Temperature Coefficient

APPLICATIONS

Battery-powered devices

Personal communication devices

Home electric/electronic appliances

PC peripherals

24 Hours Technical Support--WebSIM

Champion provides customers an online circuit simulation tool

called WebSIM. You could simply logon our website at

www.champion-micro.com for details.

TYPICAL APPLICATIONS

C M 2831

BYP

GND

OUT

1uF

1nF

2 .2 u F

2002/04/12

Rev. 3

Champion Microelectronic Corporation

Page 1

CM2831

300mA CMOS LDO W

ITH

NABLE

PIN CONFIGURATION

SOT-23-5

Top View

VOUT

GND

VIN

BLOCK DIAGRAM

BYP

OUT

1uA

Overcurrent

Shutdown

Thermal

Shutdown

BYP

Vref = 1.176V

AM P

GND

2002/04/12

Rev. 3

Champion Microelectronic Corporation

Page 2

CM2831

300mA CMOS LDO W

ITH

NABLE

ORDERING INFORMATION

Part Number

CM2831AIM25

CM2831DIM25

CM2831EIM25

CM2831HIM25

CM2831KIM25

CM2831MIM25

CM2831NIM25

CM2831OIM25

CM2831PIM25

CM2831SIM25

CM2831UIM25

CM2831VIM25

CM2831XIM25

Output Voltage

1.5V

1.8V

1.9V

2.2V

2.5V

2.7V

2.8V

2.9V

3.0V

3.3V

3.5V

3.6V

3.8V

Temperature Range

-40℃ ~ +85℃

Package

SOT-23-5

Note: For other pre-set output voltage requirements, please contact Champion Sales office.

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Output Current

Output Voltage

…………….……………………………. +7V

…………………….……

/ (V

- Vo) mA

…………………… GND-0.3V to V

+0.3V

………………………………………… B

OPERATING RATINGS

Ambient Temperature Range (T

) ……... -40℃ to +85℃

Junction Temperature Range

…..…... -40℃ to +125℃

ESD Classification

THERMAL INFORMATION

Parameter

Maximum

Thermal Resistance (Θ

)

SOT-23-5

260

Internal Power Dissipation (P

)

SOT-23-5

380

(ΔT = 100℃)

Maximum Junction Temperature

150

Maximum Lead Temperature (10 Sec)

300

Caution: Stress above the listed absolute rating may cause permanent damage to the device.

Unit

℃/W

℃

2002/04/12

Rev. 3

Champion Microelectronic Corporation

Page 3

CM2831

300mA CMOS LDO W

ITH

NABLE

ELECTRICAL CHARACTERISTICS

= +25℃; unless otherwise noted

CM2831

Min.

Note 1

= 1mA to 300mA

= 300mA, V

OUT

O(NOM)

-2%, V

OUT

>=2.5V

= 300mA, V

OUT

O(NOM)

-2%, V

OUT

<2.5V

OUT

> 1.2V

OUT

> 1.2V

OUT

< 0.95V

= 0mA

= 1mA to 300mA

OUT

=5mA, V

OUT

+1 to

OUT

<= 3.0V

OUT

> 3.0V

-0.15

-0.3

300

450

150

0.03

0.06

0.2

150

= 100mA

=2.2µF ceramic

= 100mA

Power Supply Rejection

PSRR

=2.2µF ceramic

BYP

=0.01µF

Output Voltage Noise

Shutdown Supply Current

EN Input Bias Current

EN Input Threshold

Note 1.

IN(MIN)

= V

OUT

+ V

DROPOUT

Parameter

Input Voltage

Output Voltage Accuracy

Dropout Voltage

Output Current

Current Limit

Short Circuit Current

Quiescent Current

Ground Pin Current

Line Regulation

Load Regulation

Over Temperature Shutdown

Over Temperature Hysteresis

OUT

Temperature Coefficient

Power Supply Rejection

Symbol

OUT

DROPOUT

LIM

GND

REG

LINE

REG

LOAD

OTS

OTH

Test Conditions

Typ.

Max.

1.5

Unit

-1.5

300

800

300

0.15

0.3

μA

℃

ppm/℃

=1mA to 300mA

f=1kHz

f=10kHz

f=100kHz

f=1kHz

f=10kHz

f=100kHz

=2.2µF

=100µF

=2.2µF

=100µF

2.0

1.0

/2+0.8V

/2-0.8V

3.0

0.1

3.0

μVrms

μA

PSRR

f=10Hz to 100kHz

= 10mA, C

BYP

=0µF

f=10Hz to 100kHz

= 10mA, C

BYP

=0.01µF

=5.0V, V

OUT

=0V, V

< V

, V

=2.6V to 7V

, V

=2.6V to 7V

2002/04/12

Rev. 3

Champion Microelectronic Corporation

Page 4

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