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參數資料
| 型號： | CM2855 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 300MA CMOS LDO WITH EN & PG |
| 中文描述： | 300mA的CMOS低壓符合EN |
| 文件頁數： | 1/10頁 |
| 文件大?。?/td> | 273K |
| 代理商： | CM2855 |
CM2855
300mA CMOS LDO W
ITH
EN & PG
2004/6/01
Rev. 1.2
Champion Microelectronic Corporation
Page 1
GENERAL DESCRIPTION
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.
FEATURES
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
IN OUT
EN
CM2855
PG GND ADJ
OUT
5V
C1
1uF
C3
2.2uF
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.
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