BD9285F

Datasheet Boost 1channel white LED driver For large LCDs BD9285F ●General Description BD9285F is a high efficiency driver for white LEDs and designed for large LCDs. This IC is built-in a boost DCDC converters that employ an array of LEDs as the light source. BD9285F has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limit protection of DCDC (OCP), LED over current protection (LEDOCP), the open detection of LED string. Therefore BD9285F is available for the fail-safe design over a wide range output voltage. ●Features Current mode DCDC converter Vout discharge circuit as shutdown LED protection circuit (OPEN protection, LED OCP protection) LED protect detection as small PWM dimming signal Over-voltage protection (OVP) and low-voltage protection (SCP: short circuit protection) for the output voltage Vout Adjustable soft start time constant The wide range of analog dimming 0.2V-3.5V The built-in transformation circuit from pulse to DC 2 PWM dimming signal The UVLO detection for the input voltage of the power stage FAIL logic output ●Applications TV, PC display and other LCD backlight system. ●Key Specifications Input voltage range: 9.0V to 18.0V DCDC oscillation frequency: 150kHz (RT=100kΩ) Active current consumption: 1.2mA(Typ.) Operating temperature range: -40℃ to +85℃ ●Package(s) SOP18 W(Typ.) x D(Typ.) x H(Max.) 11.20mm x 7.80mm x 2.01mm Pin pitch 1.27mm Figure 1. SOP18 ●Typical Application Circuit(s) VCC VIN ...