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AT5160 Datasheet, PDF (1/2 Pages) Global Mixed-mode Technology Inc – High Efficiency, Constant Current 40V White-LEDs Driver | |||
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Global Mixed-mode Technology
AT5160
High Efficiency, Constant Current 40V White-LEDs
Driver
Feature
 Operating Voltage: 2.5V to 5.5V.
 High Operating Frequency: 1MHz
 High Output Voltage: Up to 40V(Typ.)
 Digital Dimming Control.
 Built-in Cycle-by Cycle Current-Limiting.
 Built-in Soft-Start Function.
 0.2V Low Reference Voltage
 Thermal Overload Protection
 TSOT-23-6 Package
Application
 GPS Navigation System
 Compact Back Light Module
 Constant Current Source
 LED Module
Description
The AT5160 step-up converter drives white LEDs with a
constant current to provide backlight in cell phones,
PDAs, and other hand-held devices. It features allowing
series connection of the white LEDs so that the LED
currents are identical for uniform brightness. An enable
input can be pulsed repeatedly to adjust LEDâs
brightness. The fast 1.0MHz current-mode PWM control
allows for smaller capacitor and inductor. Fault condition
protection uses cycle-by-cycle current limiting to sense
maximum inductor current, thermal protection and
over-voltage protection. Also included soft-start eliminates
inrush current during start-up. The 0.2V low reference
voltage minimized the power loss across the
current-setting resistor.
The AT5160 is available in TSOT-23-6 packages.
Ordering Information
ORDER
NUMBER
AT5160TP1U
Note: TP: TSOT-23-6
1: Bonding Code
U: Tape & Reel
MARKING
5160x
Pin Configuration
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Green)
TSOT-23-6
Typical Application Circuit
â» Use the tantalum capacitor to eliminate inductor noise on
output terminal when you want to control dimming function.
LX 1
AT5160
6 VIN
GND 2
5 OVP
FB 3
TSOT-23-6
4 EN
Ver: 0.4
Jan 17, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
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