G5122 Datasheet, PDF (1/6 Pages) Global Mixed-mode Technology Inc – Micro-power Inverting DC/DC Converters in SOT-23-5

Global Mixed-mode Technology Inc.
G5122
Micro-power Inverting DC/DC Converters in SOT-23-5
Features
„ Configurable Output Voltage Up to -30V
„ 20µA Quiescent Current
„ <1µA Shutdown Current
„ <1µA Shutdown Pin Current
„ Supply Range from 2.5V to 6.5V
„ Low R_DS(ON): 0.8Ω
„ Tiny SOT23-5 Package
Applications
„ STN/TFT LCD Bias
„ Personal Digital Assistants (PDAs)
„ Handheld Computers
„ Digital Still Cameras
„ Cellular Phones
„ Web Pad
General Description
The G5122 inverting DC/DC converter is designed for
small/ medium size LCD panel of high bias voltage.
Due to a typical 20µA quiescent current and 2.5V~
6.5V supply voltage range, it is suitable for battery
powered portable applications. Such as PDAs and
Handheld Computers. When the IC sets to shutdown
mode, it only consumes less than 1µA.
Furthermore, the 350mA current limit, 500ns fixed
minimum off-time and tiny SOT23-5 package facili-
tates the use of smaller inductor and other sur-
face-mount components to minimize the PCB size in
those space-conscious applications.
To control the IC, no other external current is needed
for the shutdown pin. It typically consumes less than
1µA of full supply range.
Ordering Information
ORDER
NUMBER
G5122T11U
ORDER NUMBER
(Pb free)
G5122T11Uf
MARKING
5122x
TEMP.
RANGE
-40°C ~ +85°C
PACKAGE
SOT-23-5
Pin Configuration
Typical Application Circuit
SW 1
5 VCC
GND 2
FBN 3
G5122
G963
SOT23-5
4 SHDN
V_IN
2.5V to 4.2V
4.7µF
* option
10µH
0.1µF _10µH
VCC
SW
G5122
SHDN
FB
GND
316k
15k
-28V
*
47PF
10µF
Ver: 0.2 Preliminary
TEL: [phone]
Mar 21, 2005
http://www.gmt.com.tw
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