Rohm Productdetail
8-Channel White LED Driver with Integrated FET for up to 80 LEDs - BD6142AMUV
This IC is white LED driver IC with PWM step-up DC/DC converter that can boost max 41V and current driver that can drive max 30mA. The wide and precision brightness can be controlled by external PWM pulse. This IC has very accurate current drivers, and it has few current errors between each strings. So, it will be helpful to reduce brightness spots on the LCD panel.
Specifications:
Topology
Boost
Number of Outputs
8
Vin(Min.)[V]
4.2
Vin(Max.)[V]
27.0
Output Current(Max.)[mA]
240.0
Per Channel Drive(Max.)[mA]
30.0
Switch Current Limit(Typ.)[A]
2.5
Vout(Max.)[V]
41.0
Frequency(Max.)[MHz]
1.6
LED Configuration
8 x 10
LDO
No
Auto Luminous Control
No
Synchronous
No
Integrated FET
Yes
Dimming
PWM / Analog
Iq(Typ.)[mA]
3.6
Ishutdown(Typ.)[µA]
1.6
Operating Temperature (Min.)[°C]
-30
Operating Temperature (Max.)[°C]
85
Features:
・High efficiency PWM step-up DC/DC converter・High accuracy & good matching current drivers 8-ch (MAX30mA/ch)
・Integrated 50V power Nch MOSFET
・Soft Start function
・Drive up to 11 LEDs in series, 8 strings in parallel
・Wide input voltage range (4.2V to 27V)
・Over-voltage protection
・External SBD open detect / Output Short protection
・Over current limit
・CH Terminal open / GND short protect
・CH over voltage protect / LED short protect
・Thermal shutdown (TSD)
・Under voltage lockout (UVLO)
・PWM dimming (200Hz to 25kHz)
・Analog dimming