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參數資料
| 型號： | G923 |
| 廠商： | Standard Power |
| 英文描述： | 300mA High PSRR LDO Regulators |
| 中文描述： | 300mA的高PSRR LDO穩(wěn)壓器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 388K |
| 代理商： | G923 |
Ver: 1.1
Jan 19, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G923
Global Mixed-mode Technology Inc.
300mA High PSRR LDO Regulators
Features
Low, 90A No-Load Supply Current
Guaranteed 300mA Output Current
Dropout Voltage is 200mV @ 150mA Load
PSRR=65dB @ 120Hz
Over-Temperature Protection and Short-Circuit
Protection
Two Modes of Operation ----
Fixed Mode: 1.50V~5.00V
Adjustable Mode: from 1.25V to 5.50V
Max. Supply Current in Shutdown Mode < 1A
Low Output Noise at 224VRMS
Stable with low cost ceramic capacitors
Applications
Notebook Computers
Cellular Phones
PDAs
Digital still Camera and Video Recorders
Hand-Held Devices
Audio Codec
General Description
The G923 is a low supply current, high PSRR, and low
dropout linear regulator that comes in a space saving
SOT-23-5 package. The supply current at no-load is
90A. In the shutdown mode, the maximum supply
current is less than 1A. Operating voltage range of
the G923 is from 2.50V to 5.50V. The over-current
protection limit is set at 550mA typical. An over- tem-
perature protection circuit is built-in in the G923 to
prevent thermal overload. These power saving fea-
tures make the G923 ideal for use in the bat-
tery-powered applications such as notebook com-
puters, cellular phones, and PDA’s.
The G923 has two modes of operation. When the SET
pin is connected to ground, its output is a pre-set value:
1.50V~5.00V. There is no external component needed
to decide the output voltage. When an output other
than the preset value is needed, two external resistors
should be used as a voltage divider. The output volt-
age is then decided by the resistor ratio. The G923
comes in a space saving SOT-23-5 package.
Pin Configuration
G963
SET
OUT
SOT-23-5
G923
5
4
1
SHDN
2
3
GND
IN
OUT
SHDN
SET
GND
G923
＋
－ BATTERY CIN
1F
R1
R2
C
OUT
1F
OUTPUT
VOLTAGE
Adjustable mode
IN
OUT
GND
SET
SHDN
G923
C
IN
1F
＋
_
BATTERY
OUTPUT
VOLTAGE
COUT
1F
Fixed mode
G963
SET
OUT
SOT-23-5
G923
5
4
1
SHDN
2
3
GND
IN
OUT
SHDN
SET
GND
G923
＋
－ BATTERY CIN
1F
R1
R2
C
OUT
1F
OUTPUT
VOLTAGE
Adjustable mode
IN
OUT
GND
SET
SHDN
G923
C
IN
1F
＋
_
BATTERY
OUTPUT
VOLTAGE
COUT
1F
Fixed mode
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