ROHM White LED Drivers for Large LCD Panels are high efficiency drivers for white LEDs and designed for large LCD panels. The BD9397EFV IC has built-in high current drive and high responsibility type 6ch LED drivers and 1ch boost DCDC converter. The BD9479FV-GE2 IC has built-in boost DCDC converters that employ an array of LEDs as the light source. They have protect functions against fault conditions like over-voltage protection (OVP), LED OPEN and SHORT protection, the over current limit protection of DCDC (OCP). The BD9397EFV and BD9479FV-GE2 are available for fail-safe designs over a wide range output voltage.
Feature
- 8ch LED constant current driver (external PNP Tr Type)
- Maximum LED setting current 500mA (VREF pin setting)
- Build-in DC/DC converter
- Analog Dimming (Linear) function
- Individual channel PWM Dimming function
- LED protection function (Open Short protection) [PWM-independent Type]
- Output short protection (OVP)
- Built-in Timer latch function (CP)
- Built-in under voltage Lockout function (UVLO)
- over voltage protection (OVP)
- Built-in FAIL indication function
- Built-in OVP voltage Feedback function
- Built-in PWM-independent soft start circuit
- SSOP-B40 Package
