BD6592MUV_11 Datasheet, PDF (20/26 Pages) Rohm – White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type)

BD6592MUV
Technical Note
●Application example
・LED current setting controlled ISETH resistor.
24kΩ : 20mA
16kΩ : 30mA
12kΩ : 40mA
・Brightness control
Please input PWM pulse from PWMPOW or PWMDRV terminal.
Please refer electrical characteristic p.3 and function (p.13).
7inch panel
Battery
10μF
4.7μH
2.2μF *
2.2μF
4LED x 6parallel
RTR020N05
68mΩ
Power
ON/OFF
100Hz~1kHz
PWM
2.2μF
SW
SENSP
SENSN
FAILSEL
VDET
RSTB
PWMPOW
LED1
PWMDRV
VBAT
LED2
LED3
LED4
VREG
LED5
GND GND GND GND ^{TEST ISETH ISETL} LED6
12kΩ
Each 40mA
Can be set up to each15~40mA
Battery
10μF
4.7μH
2.2μF *
2.2μF
8LED x 3parallel
RTR020N05
68mΩ
Power
ON/OFF
100Hz~1kHz
PWM
2.2μF
SW
SENSP
SENSN
FAILSEL
VDET
RSTB
PWMPOW
LED1
PWMDRV
VBAT
LED2
LED3
LED4
VREG
LED5
GND GND GND GND ^{TEST ISETH ISETL} LED6
12kΩ
Each 80mA
Can be set up to each30~80mA
Fig.52 4 series×6 parallel, LED current 40mA setting
Power control PWM application
Fig.53 8 series×3 parallel, LED current 80mA setting
Power control PWM application
5inch panel
Battery
10μF
4.7μH
8LED x 2parallel
2.2μF *
2.2μF
RTR020N05
82mΩ
Power
ON/OFF
100Hz~10kHz
PWM
2.2μF
SW
SENSP
SENSN
FAILSEL
VDET
RSTB
PWMPOW
LED1
PWMDRV
VBAT
LED2
LED3
LED4
VREG
LED5
GND GND GND GND ^{TEST ISETH ISETL} LED6
12kΩ
Each 40mA
Can be set up to each15~40mA
Fig.54 8 series×2 parallel, LED current 40mA setting
Current driver PWM application
Battery
10μF
4.7μH
8LED x 2parallel
2.2μF *
2.2μF
RTR020N05
82mΩ
Power
ON/OFF
100Hz~1kHz
PWM
2.2μF
SW
SENSP
SENSN
FAILSEL
VDET
RSTB
PWMPOW
LED1
PWMDRV
VBAT
LED2
LED3
LED4
VREG
LED5
GND GND GND GND ^{TEST ISETH ISETL} LED6
12kΩ
Each 80mA
Can be set up to each30~80mA
Fig.55 8 series×2 parallel, LED current 80mA setting
Power control PWM application
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20/25
2011.06 - Rev.C