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BD9428


Part Number BD9428
Manufacturer ROHM
Title White LED Driver
Description BD9428 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...
Features
 4ch LED constant cu...

File Size 567.10KB
Datasheet BD9428 PDF File








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BD942 : ·DC Current Gain- : hFE= 40(Min)@ IC= -150mA ·Complement to Type BD933/935/937/939/941 ·Minimum Lot-to-Lot variations for robust device performance and reliable operation APPLICATIONS ·Designed for use in output stages of audio and television amplifier circuits where high peak powers can occur. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT BD934 -45 BD936 -60 VCBO Collector-Base Voltage BD938 -100 V BD940 -120 BD942 -140 BD934 -45 BD936 -60 VCEO Collector-Emitter Voltage BD938 -80 V BD940 -100 BD942 -120 VEBO Emitter-Base Voltage -5 V IC Collector Current-Continuous -3 A ICM Collector Current-Peak -7 A IB Base Current-Continuous PC.

BD9420F : BD9420F is high efficiency driver for white LED. This is designed for large sized LCD. BD9420F is built-in DCDC converter that supply appropriate voltage for light source. BD9420F is also built-in protection function for abnormal state such as OVP: over voltage protection, OCP: over current limit protection of DCDC, SCP: short circuit protection, open detection of LED string. Thus this is used for conditions of large output voltage and load conditions. Features  6ch LED constant current driver(External PNP Tr Type)  Maximum LED setting current 500mA(VREF Pin setting)  ±2% LED current accuracy(VREF=0.9V setting)  Built-in DC/DC converter  Analog Dimming(Linear) function  Built-in PWM-in.

BD9421F : BD9421F is high efficiency driver for white LED. This is designed for large sized LCD. BD9421F is built-in DCDC converters that supply appropriate voltage for light source. BD9421F is also built-in protection function for abnormal state such as OVP: over voltage protection, OCP: over current limit protection of DCDC, SCP: short circuit protection, open detection of LED string. Thus this is used for conditions of large output voltage and load conditions. Features  6ch LED constant current driver(External PNP Tr Type)  Maximum LED setting current 500mA(VREF Pin setting)  ±2% LED current accuracy(VREF=0.9V setting)  Built-in DC/DC converter  Analog Dimming(Linear) function  LED protection.

BD9422EFV : 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. ●Key Specification  Operating power supply voltage range: 9.0V to 35.0V  Oscillator frequency: 500kHz (RT=30kΩ)  Operating Current: 9mA (typ.)  Operating temperature range: -40°C to +85°C ●Applications TV, Com.

BD9423EFV : BD9423EFV 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. BD9423EFV 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 BD9423EFV is available for the fail-safe design over a wide range output voltage. Moreover the functions and the detection voltage can be controlled by the I2C. This enables for the constant setting of external parts to be shared by I2C control, nevertheless the different usage condition. Features  O.

BD942F : ·DC Current Gain- : hFE= 40(Min)@ IC= -150mA ·Complement to Type BD933F/935F/937F/939F/941F ·Minimum Lot-to-Lot variations for robust device performance and reliable operation APPLICATIONS ·Designed for use in output stages of audio and television amplifier circuits where high peak powers can occur. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE BD934F -45 BD936F -60 VCBO Collector-Base Voltage BD938F -100 BD940F -120 BD942F -140 BD934F -45 BD936F -60 VCEO Collector-Emitter Voltage BD938F -80 BD940F -100 BD942F -120 VEBO Emitter-Base Voltage -5 IC Collector Current-Continuous -3 ICM Collector Current-Peak -7 IB Base Current-Continuous -0.5 PC .




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