CM2831
300mA CMOS LDO W
ITH
E
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.
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FEATURES
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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
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APPLICATIONS
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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
IN
IN
C M 2831
BYP
GND
OUT
EN
OUT
5V
C1
1uF
C2
1nF
C3
2 .2 u F
2002/04/12
Rev. 3
Champion Microelectronic Corporation
Page 1
CM2831
300mA CMOS LDO W
ITH
E
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℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
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
…………………….……
P
D
/ (V
IN
- Vo) mA
…………………… GND-0.3V to V
IN
+0.3V
………………………………………… B
OPERATING RATINGS
Ambient Temperature Range (T
A
) ……... -40℃ to +85℃
Junction Temperature Range
…..…... -40℃ to +125℃
ESD Classification
THERMAL INFORMATION
Parameter
Maximum
Thermal Resistance (Θ
jc
)
SOT-23-5
260
Internal Power Dissipation (P
D
)
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
℃/W
℃
℃
2002/04/12
Rev. 3
Champion Microelectronic Corporation
Page 3
Embedded System
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