LED BACKLIGHT DRIVER / PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER
AiT Semiconductor Inc.
www.ait-ic.com
A8169-025
LED BACKLIGHT DRIVER PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER
DESC...
Description
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 PDAs,GPSs Digital still cameras
ORDERING INFORMATION
Package Type
Part Number
SOT-26
A8169E6R-025 E6
A8169E6VR-025
Note
R: Tape & Reel V: Halo...
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