Boost 1channel white LED driver For large LCDs - BD9488F | ROHM Semiconductor - ROHM Co., Ltd.
Boost 1channel white LED driver For large LCDs - BD9488F
BD9488F is a high efficiency driver for white LEDs anddesigned for large LCDs. This IC is built-in a boostDCDC converters that employ an array of LEDs as thelight source. BD9488F has some protect function againstfault conditions, such as the over-voltage protection(OVP), the over current limit protection of DCDC (OCP),LED over current protection (LEDOCP), the opendetection of LED string. Therefore BD9488F is availablefor the fail-safe design over a wide range output voltage.
Number of Outputs
Operating Temperature (Min.)[°C]
Operating Temperature (Max.)[°C]
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) for the output voltage.
・ 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