G5135 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Micro-Power Boost DC/DC Converter

Global Mixed-mode Technology Inc.
G5135
Micro-Power Boost DC/DC Converter
Features
„ Operating Voltage：2.7V ~ 5.5V
„ High Operating Frequency：1MHz
„ Shutdown Current：＜1μA
„ High Output Voltage：Up to 40V
„ Soft Start Function
„ Cycle by Cycle Current Limiting
„ SOT-23-5 Package
Applications
„ STN/OLED BIAS
„ Personal Digital Assistants
„ DSC
„ TV Tunner
General Description
The G5135 boost converter contains a 0.7Ω internal
switch. The IC operates at constant frequency 1MHz,
allowing the use of tiny, low cost and low height in-
ductors and capacitors. The IC operates from a 2.7V
to 5.5V supply voltage and can boost supply voltage
up to 40V at the output. High inrush current at start-up
is eliminated using the soft-start function. Constant
frequency current mode PWM architecture results in
low, predictable output noise. The G5135 includes
cycle-by-cycle 850mA current limiting to maximum
inductor current and over-temperature protection cir-
cuit. The G5135 is suitable for small or medium size
LCD panel of high bias voltage with a constant current
to provide PDAs, and other portable devices. The
G5135 is available in SOT-23-5 package.
Ordering Information
ORDER
NUMBER
MARKING
G5135T11U
5135x
Note: T1: SOT-23-5
1 : Bonding Code
U: Tape & Reel
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Pb free)
SOT-23-5
Pin Configuration
Typical Application Circuit
LX 1
G5135
5 IN
GND 2
FB 3
4 EN
SOT-23-5
V_IN=4 .5V to 5.5V
C_IN
4 .7 µF
10µH or 22µH
IN
LX
G5135
EN
FB
GND
V_OUT=33 V
C _{OU T}
1µF MLCC
47 5k
R1
18 .7 k
R2
Ver: 0.3
Aug 01, 2008
TEL: [phone]
http://www.gmt.com.tw
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