BD9422EFV Series

White LED Driver for large LCD panel

Catalog

White LED Driver for large LCD panel

Part	Supplier Device Package	Dimming	Current - Output / Channel	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Voltage - Supply (Min) [Min]	Applications	Voltage - Supply (Max) [Max]	Frequency	Type	Topology	Internal Switch(s)	Mounting Type	Package / Case	Package / Case
Rohm Semiconductor BD9422EFV-E2	40-HTSSOP-B	Analog PWM	400 mA	85 °C	-40 °C	6	9 V	Backlight	35 V	500 kHz	DC DC Regulator	Step-Up (Boost)		Surface Mount	40-VSSOP (Exposed Pad)	0.213 in 5.4 mm

Catalog

White LED Driver for large LCD panel

Key Features

• 6ch Constant LED drivers, available 400mA drive per 1ch., Constant current accuracy ±1.8% (IC only), Each 6ch external PWM inputs can control independent dimming ., Current analog (linear) dimming by VREF, 1ch boost controller with current mode (external FET), Several protection functionsDCDC part : OCP/OVP/UVLO/TSDLED driver part :OPEN,SHORT detection, SHORT detection voltage is set by LSP terminal. Error detection output FAIL terminal inside (normal=Open, error=Drain), Master/Slave mode inside

Description

BD9422EFV is a high efficiency driver for white LEDs and designed for large LCD panel. This IC is built-in high current drive and high responsibility type 6ch LED drivers and 1ch boost DCDC converter. BD9422EFV has some protect function against fault conditions, such as the over-voltage protection (OVP), LED OPEN and SHORT protection, the over current limit protection of DCDC (OCP). Therefore BD9422EFV is available for the fail-safe design over a wide range output voltage.