Featured Products High-accuracy dimming with dual DC/PWM output Boost LED Driver BD65B60GWL The BD65B60GWL is a 2ch LED driver designed for small LCD backlighting in smartphones, portable gaming devices, and more. Circuit optimization ensures high efficiency in the low-current region (i.e. during standby), while dual DC (current) and PWM control provides high precision dimming across the entire brightness range. High efficiency in the low current region Energy-saving design ideal for portables UCSP50L1 (12pin) Package 1 Ensures high efficiency in the low-current region Optimization of the internal boost DC/DC converter circuit achieves high efficiency in the low-current region below 10mA (i.e. during standby). 2 High accuracy dimming via dual DC/PWM output control BD65B60GWL High efficiency ensured in the low-current region 90 85 80 75 Feature Efficiency vs. LED Current 95 Efficiency [%] Feature Conventional 0 PWM Output 5 10 LED Current [mA/ch] select either PWM or DC output for the LED current during dimming, based on intended use, ensuring high-precision dimming across the entire brightness range. PWM: 50% Duty DC: 20mA LED1 Pin Optimize the brightness by adjusting the PWM by pressing a button on a dimming settings screen 3 Original DAC dimming technology eliminates brightness variations brightness variations across each channel, enabling uniform brightness for LED backlighting applications. PWM: 50% Duty DC: 20mA 10mA 20mA x 50% (Internal DC) = 10mA (DC Output) Ex: 0.3mV offset between channels 25 Standard Circuit 20 15 High precision DAC dimming achieved 10 5 0 Output DAC Ratio vs. Error Ratio 30 Proprietary precision DAC dimming technology eliminates LED Output 20mA x 50% (PWM Duty) =10mA (PWM Output) Input Settings PWM LED1 Current Error Ratio [%] Feature 0mA LED1 Pin based on ambient conditions Adjust the brightness via DC (current) 20mA LED1 Current DC Output Dimming Examples 20 *ROHM survey Input Settings PWM Current setting for LED dimming is possible at the same time via both PWM input and DC (register) settings. In addition, users can 15 ROHM 1 10 DAC Ratio [%] 100 Applications ■ Portable gaming ■ Smartphones ■ POS terminals ■ Electronic dictionaries ■ Multifunction printers ■ Wearable devices ■ Digital cameras ■ Digital camcorders ■ SLR cameras ■ Refrigerators And other sets utilizing compact LCDs LED Driver Lineup Boost LED Drivers White LED Drivers with Built-In FET Supply Voltage (V) No. of LEDs Output Voltage (V) 2.7 to 5.5 3 to 10 10pcs x 1 row 40.0 Max. 30 0.6 PWM signal at PWM pin/ Resistance switching at ISET pin Pin logic setting VSON008X2030 BD60A60NUX 2.7 to 5.5 3 to 6 6pcs x 1 row 26.0 Max. 30 0.6 PWM signal at PWM pin/ Resistance switching at ISET pin Pin logic setting VSON008X2030 BD65B60GWL 2.7 to 5.5 16 (Max.) 8pcs x 2 rows 28.5 Max. 25 (per row) 1.1 / 0.6 24.0 Max. 25 (per row) 1.0 PWM signal at PWM pin/ Resistance switching at ISET pin Pin logic setting VQFN024V4040 40.0 Max. 30 (per row) 1.25 PWM signal at PWMPOW/PWMDRV pin/ Resistance switching at ISET pin Part No. BD60A00NUX BD6586MUV BD6590MUV BD65D00MUV BD6142AMUV 2.7 to 5.5 24 (Max.) 6pcs x 4 rows 4.5 to 5.5 60 (Max.) 10pcs x 6 rows 6.0 to 27.0 40 (Max.) With internal FET: 40.0 Max. External FET: 80.0 Max. 10pcs x 4 rows 4.2 to 27.0 80 (Max.) 10pcs x 8 rows Supply Voltage (V) BD6071HFN 3.1 to 5.5 BD6072HFN 3.1 to 5.5 BD6076GUT 2.7 to 5.5 BD6077GUT 2.7 to 5.5 BD6079GWL 2.5 to 5.5 No. of LEDs 2-3 3pcs x 1 row 3-4 4pcs × 1 row 4 4pcs x 1 row 3 3pcs x 1 row 10 Max. 2pcs x 5 rows 100 30 (per row) 41.0 Max. Synchronous Rectification White LED Drivers with Built-In FET Part No. Output Current Switching (mA) Frequency (MHz) Output Voltage (V) White LED Drivers (External FET Type) 14.0 Max. 18.0 Max. 18.0 Max. VQFN028V5050 0.6 to 1.5 VQFN024V4040 Output Current Switching (mA) Frequency (MHz) (@10V output) HSON8 (@14V output) 35 1.0 PWM signal at EN pin HSON8 30 1.25 PWM signal at EN pin VCSP60N1 VCSP60N1 25 1.0 PWM signal at EN pin (1.55×1.55), H=0.675Max. 8.1 Max. 30 2.0 PWM signal at EN pin UCSP50L1 Primary Brightness Control Method BD6581GU 1.0 BD6583MUV-A 2.7 to 22.0 72 Max. 12pcs x 6 rows (Vf limit) 43.0 Max. 25 (per row) 1.0 2.7 to 22.0 72 Max. 12pcs x 6 rows (Vf limit) 43.0 Max. 40 (per row) 9.0 to 18.0 80 Max. 80pcs x 1 row BD9479FV 9.0 to 35.0 96 Max. 12pcs x 8 rows 43.0 Max. BD9488F 9.0 to 18.0 120 Max. 120pcs x 1 row 400 Max. 1 or 3 (Large current type) BD6164GUT 2.7 to 4.5 BD7704MUX 2.7 to 5.5 1 (Large current type) 1-2 (Large current type) Buck LED Drivers (1.68×1.68), H=0.675Max. 14.0 Max. 25 (per row) 3.1 to 5.5 Package (mm) PWM signal at EN pin 43.0 Max. BD7700GU Control Interface 1.0 72 Max. 12pcs x 6 rows (Vf limit) No. of LEDs Primary Brightness Control Method 35 2.7 to 22.0 Supply Voltage (V) (1.4×1.8), H=0.55Max. PWM signal at PWM pin/Resistance Pin logic setting switching at ISET pin/Analog voltage control Switching Frequency (MHz) Part No. UCSP50L1 0.6 to 1.5 Output Current (mA) Drivers for LED Camera Flash I2C BUS + PWM VQFN024V4040 Output Voltage (V) BD9285F Package (mm) Pin logic setting No. of LEDs BD6592MUV I2C BUS control/ PWM signal at PWM pin/ Resistance switching at ISET pin Control Interface PWM signal at PWM pin/Resistance Pin logic setting switching at ISET pin/Analog voltage control Supply Voltage (V) Part No. Primary Brightness Control Method 250 Max. Output Voltage (V) 5.5 Max. 4.7 Max. 5.4 Max. PWM signal at PWMPOW/PWMDRV pin/ Resistance switching at ISET pin PWM signal at PWMPOW/PWMDRV pin/ Resistance switching at ISET pin (1.4×1.8), H=0.55Max. Control Interface Package (mm) VCSP85H2 Pin logic setting (2.6×2.6), H=1.0Max. Pin logic setting VQFN024V4040 1.0 PWM signal at PWMPOW/PWMDRV pin/ Resistance switching at ISET pin Pin logic setting VQFN024V4040 0.05 to 0.8 PWM signal control Analog signal control Pin logic setting SOP18 500 Max. 0.1 to 0.8 PWM signal control Analog signal control Pin logic setting SSOP-B40 400 Max. 0.05 to 0.8 PWM signal control Analog signal control Pin logic setting SOP18 400 Max. Output Current For 3-lamps: 2-20mA (continuous) 10-100mA (flash) For 1 lamp: 6-60mA (continuous) 30-300mA (flash) 52/72mA (continous) 260/280/300/320mA (flash) 1.5A Max. Switching Frequency (MHz) 1.25 Control Interface Package (mm) VCSP85H2 Pin setting (2.24×2.24), H=1.0Max. 4 I2C BUS (1.5×1.0), H=0.675Max. 2 UPIC* VCSP60N1 VQFN016X3030 *UPIC: Uni-Port Interface Control DC/DC Converter Type Buck LED Lighting Drivers Buck LED Lighting Drivers (requiring no electrolytic capacitors) Boost-Buck LED Drivers White LED Driver Series (Automotive-Grade) Headlight LED Drivers (Automotive-Grade) Versatile LED Drivers White LED Driver Series Multidisplay LED Drivers LED Drivers for Decorative Lighting The contents specified in this document are correct as of February 1, 2014. [O_032] Catalog No.56O6763E_B 02.2014 ROHM © EN