DL

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
Similar pages