A8169-025 Datasheet | AiT Semiconductor

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 0.22u F. 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=20m A) Control: PWM control Stand-by Current: ISTB=1.0u A Load capacitor: 0.22u F,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: Halogen free Package Ai T provides all Ro HS free products Suffix “ V “ means Halogen free Package REV2.1 - JUN 2010 RELEASED, FEB 2013 UPDATED - -1- Ai T Semiconductor Inc. .ait-ic. PIN DESCRIPTION LED BACKLIGHT DRIVER PWM MODE 23V STEP-UP SERIES WHITE LED DRIVER Pin # 1 2 3 4 5 6 Symbol LX VSS FB CE OVP...