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G923-430T1U Datasheet

  • G923-430T1U

  • 300mA High PSRR LDO Regulators

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Global Mixed-mode Technology Inc.
G923
300mA High PSRR LDO Regulators
Features
Low, 90碌A(chǔ) 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 < 1碌A(chǔ)
Low Output Noise at 224碌V
RMS
Stable with low cost ceramic capacitors
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
90碌A(chǔ). In the shutdown mode, the maximum supply
current is less than 1碌A(chǔ). 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鈥檚.
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.
Applications
Notebook Computers
Cellular Phones
PDAs
Digital still Camera and Video Recorders
Hand-Held Devices
Audio Codec
Pin Configuration
IN
OUT
OUTPUT
VOLTAGE
C
OUT
錛?/div>
C
BATTERY
SHDN
1
5
SET
G923
IN
_
1碌F
SHDN
GND
SET
1
碌
F
Fixed mode
GND
2
G923
G963
IN
3
4
OUT
錛?/div>
IN
OUT
R1
OUTPUT
VOLTAGE
SOT-23-5
錛?/div>
BATTERY C
IN
1碌F
G923
SHDN
GND
SET
R2
C
OUT
1碌F
Adjustable mode
Ver: 1.1
Jan 19, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
1

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