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BD6581GU PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD6581GU
기능 6-Channel White LED Driver
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BD6581GU 데이터시트, 핀배열, 회로
Datasheet
6-Channel White LED Driver
for up to 72 LEDs
BD6581GU
General Description
BD6581GU is white LED driver IC with PWM step-up
DC/DC converter that can boost max 42.5V and
current driver that can drive max 25mA. The wide and
precision brightness can be controlled by external
PWM pulse.
BD6581GU has very accurate current drivers, and it
has few current errors between each strings.
So, it will be helpful to reduce brightness spots on the
LCD.
Small package type is suited for saving space.
Key Specification
Operating power supply voltage range: 2.7V ~ 22.0V
Quiescent Current 1:
0.6μA (Typ.)
Quiescent Current 2:
4.6μA (Typ.)
Operating temperature range:
-30 ~+85
Package
VCSP85H2:
W(Typ.) x D(Typ.) x H (Max.)
2.60mm x 2.60mm x 1.00mm
[bottom view]
Features
High efficiency PWM step-up DC/DC converter
(fsw=1MHz), max efficiency 93%
High accuracy & good matching ( 1.5%) current
drivers 6ch
Drive up to 12 in series, 6 strings in parallel =72
white LEDs ( white LED Vf=3.5Vmax)
Rich safety functions
Over-voltage protection (OVP)
Over current limit
External SBD open detect
Thermal shutdown
E LED6
LED5
LED4
LED3
LED2
D RSTB
GND FAILSEL GND
LED1
C VBAT PWMPOW VREG
ISETL PWMDRV
B N.C
-
TEST
ISETH
GND
A VDET
N.C
SW SENSP SENSN
12345
Application
All middle size LCD equipments backlight of Notebook
PC, portable DVD player, car navigation systems, etc.
Typical Application Circuit
Battery
10μF
4.7μH
2 .2μF *
RTR020N05
100m
Power
ON/OFF
200Hz
PWM
1μF
SW
SENSP
FAILSEL VDET
SENSN
RSTB BD6581GU
PWMPOW
LED1
PWMDRV
VBAT
LED2
LED3
LED4
VREG
LED5
GN GNDGNDGNDTESTISETHISETLLED6
24k
10LED x6parallel
Each 20mA
Figure 1. Typical Application Circuit
Product structure Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product is not designed protection against radioactive rays
1/32
TSZ02201-0G3G0C400170-1-2
03.Dec.2012 Rev.001




BD6581GU pdf, 반도체, 판매, 대치품
BD6581GU
Pin Descriptions
PIN
Name
In/Out
A1 VDET
A2 N.C.
A3 SW
A4 SENSP
A5 SENSN
B1 N.C.
B3 TEST
B4 ISETH
B5 GND
C1 VBAT
C2 PWMPOW
C3 VREG
C4 ISETL
C5 PWMDRV
D1 RSTB
D2 GND
D3 FAILSEL
D4 GND
D5 LED1
E1 LED6
E2 LED5
E3 LED4
E4 LED3
E5 LED2
PIN
Number
In
-
Out
In
In
-
In
In
-
In
In
Out
In
In
In
-
In
-
In
In
In
In
In
In
Function
Detect input for SBD open and OVP
No connect pin
Switching Tr drive terminal
+ Side Current sense terminal
- Side Current sense terminal
No connect pin
TEST input (Pull down 100kto GND)
Resistor connection for ,LED current setting at PWMDRV=H
GND
Battery input
PWM input pin for power ON/OFF
Regulator output / Internal power-supply
Resistor connection for ,LED current setting at PWMDRV=L
PWM input pin for power ON/OFF only driver
Reset pin L :Reset H :Reset cancel
GND
Latch selectable pin of protect function
GND
Current sink for LED1
Current sink for LED6
Current sink for LED5
Current sink for LED4
Current sink for LED3
Current sink for LED2
Pin ESD Type
VBAT VREG
VBAT
Datasheet
Terminal equivalent
circuit diagram
C
F
G
G
A
F
G
A
B
C
E
D
A
E
E
B
E
B
C
C
C
C
C
C
PIN
GND
A
VBAT
PIN
B
VB AT
PIN
GND
C
PIN
GND
D
VBAT VREG
PIN
GND
5 .5V
Cla mp
E
PIN
F
PIN
GND
G
Figure 2. Pin ESD Type
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
4/32
TSZ02201-0G3G0C400170-1-2
03.Dec.2012 Rev.001

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BD6581GU 전자부품, 판매, 대치품
BD6581GU
Typical Performance Curves - continued
Datasheet
6V 12V 16V
Figure 8. Efficiency vs PWMPOW-HI Duty
ISETH=24k, PWM=200Hz
100%
95%
90%
85%
80%
6V 12V 16V
75%
70%
65%
60%
0 10 20 30 40 50 60 70 80 90 100
Duty [%]
Figure 9. Efficiency vs PWMDRV-HI Duty
ISETH=24k, PWM=200Hz
16V
12V
6V
16V
12V
6V
Figure 10. LED current vs PWMDRV-HI Duty
PWM = 200Hz
Figure 11. LED current vs PWMDRV-HI Duty
( Expansion) PWM = 200Hz
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
7/32
TSZ02201-0G3G0C400170-1-2
03.Dec.2012 Rev.001

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부품번호상세설명 및 기능제조사
BD6581GU

6-Channel White LED Driver

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