LED Drivers ICs for LCD Backlights LED Driver IC Series | New product new technology

Expand Differentiate your sets with ROHM's unique double dimming function LED Drivers ICs for LCD Backlights LED Driver IC Series

Overview

ROHM LED driver ICs are specifically designed to provide optimized viewing with low power consumption in LCD displays. In addition, a special double dimming function adjusts the brightness based not only on ambient conditions, but on image content as well for maximum efficiency and visibility with less eye strain than ever before.
●System Block Diagram

Features

■ Backlight Dimmer

I/F compatible with analog output sensors (linear/logarithmic output)
Gain control function with wide light measurement range built in
Customizable register settings based on the current adjustment curve for brightness
Backlight adjustment function linked with video display via external PWM control
Integrated I²C bus interface

■ LED driver (BD60910GUL)

8-lamp serial drive with automatic dimmer
Reduced output ripple during PWM dimming
No fluctuations during automatic dimming due to 8bit current gradation control
Ultra-compact WL-CSP

Double dimming function significantly reduces power consumption

ROHM LED drivers for LCD backlights feature a PWM input pin designed for connection with image processor ICs that enable backlight adjustment based on image brightness. In addition, a sensor control sequence compatible with both log/linear light sensors is built in that varies the brightness based on ambient conditions. This dual dimming functionality makes ROHM drivers ideal for portable devices, where energy efficiency is a priority.

Suppresses step-up output fluctuations and eliminates output capacitor ringing

Systems that utilize PWM signals for brightness adjustment are often susceptible to output capacitor ringing. ROHM's unique technology suppresses step-up circuit output fluctuations, significantly reducing output capacitor ringing. This simplifies module development load while reducing the number of components required.

Simply connect the BD6092GU to existing systems to enable dimming functionality

ROHM dimming controller ICs (i.e. BD60910GUL) remove the LED driver component and integrate just the dimmer control circuit and senser interface, making it easy to add double dimming functionality to existing systems (with LED driver).

Automatic sensor gain control function

ROHM LED drivers for LCD backlights are compatible with both log and linear light sensors for dimming based on ambient light. In addition, an automatic 2-stage gain switching function based on input from the sensor IC is built in, enabling precise brightness adjustment over a wide range.

Applications

·	Mobile phones	·	Car navigation systems	·	Notebook PCs	·	Vending machines
·	PDAs	·	Car entertainment systems	·	Kiosks	·	Portable GPS equipment
·	Digital cameras	·	Portable gaming equipment	·	Security systems	·	Electronic musical instruments
·	Video cameras	·	Printers	·	Parking exit fare machines	·	LCD TVs
·	Portable audio players	·	Electronic dictionaries	·	Massage chairs	·	Electronic advertising
·	Portable DVD players	·	Intercoms	·	Portable navigation systems	·	Wireless phones
·	Single-segment TVs	·	Communication equipment	·	Portable media players	·	Portable internet terminals
·	Measurement equipment	·	Fax machines	·	Registers		and more…

Lineup

Part No.	Power Supply Voltage (V)	Charge Pump Step-up Circuit		LEDs for Backlight and Flash	LDO Regulator	LED Driver for Decorative LEDs	Automatic Dimming	Control Interface	Package (mm)
Part No.	Power Supply Voltage (V)	Output Voltage (V)	Output Current (mA)	LEDs for Backlight and Flash	LDO Regulator	LED Driver for Decorative LEDs	Automatic Dimming	Control Interface	Package (mm)
NEW BD6095GUL	2.7 to 5.5	Max5.1	250	5 lamps (25.6mA max.), 128 steps 3 lamps (120mA max.), 32 steps	2ch (16-stage variable output)	-	Built in	I²C BUS	VCSP50L3 3.75× 3.75× t0.55
NEW BD6088GUL	2.7 to 5.5	Max5.5	150	6 lamps (25.6mA max.), 128 steps	-	4-lamp open drain PWM slope control function	Built in	I²C BUS	VCSP50L3 3.5× 3.5× t0.55
NEW BD6083GUL	2.7 to 5.5	Max5.5	150	6 lamps (25.6mA max.), 128 steps	4ch (16-stage variable output)	-	Built in (Linear Sensor)	I²C BUS	VCSP50L3 3.15× 3.15× t0.55

Part No.	Power Supply Voltage (V)	LED Connection Method	Step-up Circuit	LEDs for Backlight and Flash	LDO	Automatic Dimming	Control Interface	Package (mm)
NEW BD60910GU	2.7 to 5.5	Serial connection	Chopper	8 lamps (25.6mA max.), 128 steps	-	Built in	I²C BUS	3.0× 3.0× t1.0
BD6092GU	2.7 to 5.5	-	-	-	-	Built in	I²C BUS	2.8× 2.8× t1.0

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Overview

Features

Double dimming function significantly reduces power consumption

Suppresses step-up output fluctuations and eliminates output capacitor ringing

Simply connect the BD6092GU to existing systems to enable dimming functionality

Automatic sensor gain control function

Applications

Lineup

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