BD6581GU-E2 Rohm Semiconductor, BD6581GU-E2 Datasheet - Page 7

• Manufacturer Part Number: BD6581GU-E2
• Description: IC LED DVR WHT BCKLGHT VCSP85H2
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of BD6581GU-E2

• Constant Current: -
• Constant Voltage: -
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.2MHz
• Voltage - Supply: 2.7 V ~ 22 V
• Voltage - Output: 44.7 V
• Mounting Type: *
• Package / Case: *
• Operating Temperature: -30°C ~ 85°C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Application Example
●Terminal processing
BD6581GU
© 2010 ROHM Co., Ltd. All rights reserved.
www.rohm.com
RTR020N05
RTR020N05
100mΩ
100mΩ
Fig.27 10 series x 6parallel LED current 20mA setting
TEST pin = Connect to GND
N.C.
VREG
FAILSEL, PWMDRV = Connect to GND in case of fixing at L level.
LED1-6 = When each LED driver are not used, connect to GND of IC
GND
RSTB
So, you mustn’t input RSTB voltage with pull up resistor of several kΩ.
And, please care about the relation between VBAT and RSTB enough.
10μF
200Hz
10μF
PWM
ON/OFF
200Hz
PWM
Power
ON/OFF
Power
Battery
Battery
1μF
1μF
4.7μH
Power control PWM application
4.7μH
Fig.25 10 series x 6parallel Hi current 20mA setting
= Nothing specified in particular. Open is recommended.
= When IC is driving from the outside of 2.7~5.5V, short VBAT and VREG, and put the voltage to VREG
= Each GND is connecting inside IC, but, connect to GND of all board
= RSTB is used as a power supply of internal circuit.
2.2μF *
2.2μF *
GND
GND
SENSP
SENSN
RSTB
SENSP
SENSN
PWMPOW
PWMDRV
SW
VREG
PWMPOW
VBAT
SW
RSTB
PWMDRV
VREG
VBAT
GND
GND
Current driver PWM application
GND
GND
GND
GND
TEST
TEST
Connect to VREG of IC or the power supply of more than 1.4V in case of fixing at H level .
FAILSEL
FAILSEL
ISETH
ISETH
24kΩ
24kΩ
ISETL
ISETL
*
*
LED1
LED2
LED3
LED4
LED5
LED6
LED1
LED2
LED3
LED4
LED5
LED6
Please select the capacitor which the little bias fluctuation.
Please select the capacitor which the little bias fluctuation.
VDET
VDET
Each 20mA
Each 20mA
10LED x 6parallel
10LED x 6parallel
7/26
2.7V to 5.5V
Fig.28 Non-used Inside REG or operating under 5V application
RTR020N05
RTR020N05
100mΩ
150mΩ
10μF
200Hz
PWM
10μF
ON/OFF
200Hz
Power
PWM
ON/OFF
Battery
Power
Battery
1μF
1μF
4.7μH
4.7μH
2.2μF *
Fig.26 10 series x 4parallel Hi current 20mA setting
2.2μF *
GND
SENSP
SENSN
GND
RSTB
PWMPOW
PWMDRV
SW
VREG
VBAT
SENSP
SENSN
RSTB
PWMPOW
SW
PWMDRV
VREG
VBAT
GND
GND
GND
Current driver PWM application
GND
GND
GND
TEST
TEST
FAILSEL
ISETH ISETL
FAILSEL
ISETH
24kΩ
24kΩ
ISETL
LED5
LED6
VDET
LED1
LED2
LED3
LED4
LED1
LED2
LED3
LED4
LED5
LED6
VDET
2010.03 - Rev.A
Technical Note
Each 20mA
Each 20mA
10LED x 6parallel
10LED x 4aprallel