G5111_04 Datasheet, PDF (1/8 Pages) Global Mixed-mode Technology Inc – Micro-power Step-Up DC/DC Converters in SOT-23-5

Global Mixed-mode Technology Inc.
G5111
Micro-power Step-Up DC/DC Converters in SOT-23-5
Features
„ Configurable Output Voltage Up to 28V
„ 20µA Quiescent Current
„ <1µA Shutdown Current
„ <1µA Shutdown Pin Current
„ Supply Range from 2.5V to 6.5V
„ Low V_DS(on): 250mV (I_SW=300mA)
„ Tiny SOT-23-5 Package
Applications
„ STN/TFT LCD Bias
„ Personal Digital Assistants (PDAs)
„ Handheld Computers
„ Digital Still Cameras
„ Cellular Phones
„ WebPad
„ White LED Driver
„ Local 3V to 5V Conversion
General Description
The G5111 boost converter is designed for small/ me-
dium 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 SOT-23-5 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
G5111T11U
G5111T12U
ORDER NUMBER
(Pb free)
G5111T11Uf
G5111T12Uf
MARKING
51xx
52xx
TEMP. RANGE
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
SOT-23-5
SOT-23-5
Pin Configuration
Typical Application Circuit
SW 1
5 VCC
GND 2
FB 3
G5111 T11
G963
4 SHDN
SOT-23-5
SHDN ¹
5 _FB
VCC 2
GND 3
G5111 T12
G963
4 SW
SOT-23-5
Ver: 1.2
Sep 09, 2004
V_IN
2.5V to 4.2V
10µH
4.7µF
VCC
SW
G5111
SHDN
FB
GND
20V
12mA
1M
1µF
62k
TEL: [phone]
http://www.gmt.com.tw
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