A8169-025

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...