A8169-025 Datasheet PDF


Part Number

A8169-025

Description

LED BACKLIGHT DRIVER / PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER

Manufacture

AiT Semiconductor

Total Page 9 Pages
PDF Download
Download A8169-025 Datasheet PDF


Features Datasheet pdf AiT Semiconductor Inc. www.ait-ic.com A 8169-025 LED BACKLIGHT DRIVER PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER DE SCRIPTION FEATURES The A8169-025 Seri es is a fixed frequency, constant  c urrent step-up DC/DC converter ideal fo r driving LEDs  used in backlighting applications on cellular phones, PDAs and digital cameras etc. Output voltage of up to 23V  can be derived, and f rom a 3.2V input six white LED’s can  be driven in series or alternativel y, using a 2.5V input, a  network of two parallel legs with three in each m ay be driven. Luminance of the LED’s is controlled by changing the duty  cycle of a PWM signal applied to the CE pin. In addition,  an internal MOSFET with an RDS(.
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A8169-025 Datasheet
AiT Semiconductor Inc.
www.ait-ic.com
A8169-025
LED BACKLIGHT DRIVER
PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER
DESCRIPTION
FEATURES
The A8169-025 Series is a fixed frequency, constant
current step-up DC/DC converter ideal for driving LEDs
used in backlighting applications on cellular phones,
PDAs and digital cameras etc. Output voltage of up to 23V
can be derived, and from a 3.2V input six white LED’s can
be driven in series or alternatively, using a 2.5V input, a
network of two parallel legs with three in each may be
driven.
Luminance of the LED’s is controlled by changing the duty
cycle of a PWM signal applied to the CE pin. In addition,
an internal MOSFET with an RDS(ON) of 0.8Ω is used. Allow
profile and small board area solution can be achieved
using a chip coil and an ultra small ceramic output
capacitor (CL) of 0.22uF.
Input voltage range: 2.5V~6V
Output voltage range: up to 23V externally
set-up reference voltage 0.25V
Oscillation frequency: 1.0MHz
On resistance: 0.8Ω
Efficiency: 88%(When driving 3 white LEDs
in
series VIN=3.6V ILED=20mA)
Control: PWM control
Stand-by Current: ISTB=1.0uA
Load capacitor: 0.22uF,ceramic
Lx limit Current:1.0A
Available in SOT-26 package
The A8169-025 is available in SOT-26 Package.
TYPICAL APPLICATION
APPLICATIONS
For White LED Drivers
Mobil phones, PHS
PDAsGPSs
Digital still cameras
ORDERING INFORMATION
Package Type
Part Number
SOT-26
A8169E6R-025
E6
A8169E6VR-025
Note
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS free products
Suffix V means Halogen free Package
REV2.1
- JUN 2010 RELEASED, FEB 2013 UPDATED -
-1-




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