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BD6142AMUV 데이터시트 PDF




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부품번호 BD6142AMUV 기능
기능 8-Channel White LED Driver
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BD6142AMUV 데이터시트, 핀배열, 회로
Datasheet
8-Channel White LED Driver
with Integrated FET for up to 80 LEDs
BD6142AMUV
General Description
This IC is white LED driver IC with PWM step-up
DC/DC converter that can boost max 41V and current
driver that can drive max 30mA. The wide and
precision brightness can be controlled by external
PWM pulse. This IC 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
panel. Small package is suited for saving space.
Features
High accuracy & good matching current drivers 8ch
(MAX30mA/ch)
Integrated 50V power Nch MOSFET
Soft Start function
Drive up to 11 LEDs in series, 8 strings in parallel
Rich safety functions
Over-voltage protection
External SBD open detect / Output Short
protection
Over current limit
CH Terminal open / GND short protect
CH over voltage protect / LED short protect
Thermal shutdown
UVLO
Analog Brightness Control
Key Specifications
Operating power supply voltage range: 4.2V to 27.0V
LED maximum current:
30mA (Max.)
Quiescent Current:
1.6μA (Typ.)
Switching frequency:
1.25MHz(Typ.)
Operating temperature range:
-40to +85
Package W(Typ.) x D (Typ.) x H(Max.)
VQFN024V4040
4.00mm x 4.00mm x 1.00mm
VQFN024V4040
Figure 1. Package
Applications
All medium sized LCD equipments, Backlight of
Notebook PC, net book, monitor, light, Portable DVD
player, light source etc.
Typical Application Circuit (8 Parallel)
10µF
7V to27V
10µH
2. 2µ F/50V
2.2µF
VOUT
10 serial x 8 parallel (80pcs)
2.1V to VIN
RESET
LX LX
ENAB LE
FAULT
VIN
VDC
OV P
PWM
PWM
fPW M=100Hz~25kHz
1k
22nF
GND
PG ND
CO MP
PGND
B D 61 42 AM U V
PGND GND TEST FSET ABC ISET
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
56k1nF
36k
Figure 2. Typical Application Circuit
2.2M
68k
20mA
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/30
TSZ02201-0G3G0C400340-1-2
03.Dec.2012 Rev.001




BD6142AMUV pdf, 반도체, 판매, 대치품
BD6142AMUV
Pin Descriptions
Pin No. Pin Name
1 ENABLE
2 TEST
3 FSET
4 ABC
5 GND
6 PWM
7 CH8
8 CH7
9 CH6
10 CH5
11 ISET
12 CH4
13 CH3
14 CH2
15 CH1
16 OVP
17
PGND
18
19
LX
20
21 FAULT
22 COMP
23 VIN
24 VDC
- Thermal PAD
Pin ESD Type
IO Function
In PWM input pin for power ON/OFF or Power control
In TEST signal (Pull down 100kwithin IC)
In Resister connection for frequency setting
In Analog Brightness Control
- GND for Switching Regulator
In PWM input pin for power ON/OFF only driver
In Current sink for CH8
In Current sink for CH7
In Current sink for CH6
In Current sink for CH5
In Resister connection for LED current setting
In Current sink for CH4
In Current sink for CH3
In Current sink for CH2
In Current sink for CH1
In Detect input for SBD open and OVP
- PGND for switching Tr
Out Switching Tr drive terminal
Out Switching Tr drive terminal
Out Fault signal
Out ERRAMP output
In Battery input
Out Regulator output / Internal power-supply
-
Heat radiation PAD of back side
Connect to GND
Datasheet
Terminal diagram
E
E
A
C
B
E
C
C
C
C
A
C
C
C
C
C
D
F
F
C
A
G
C
VDC
PIN
VIN
PIN
PIN
VIN
PIN
GND
A
PGND
B
GND
C
GND
D
PIN
GND
E
5.5V
Clump
PIN
PGND
F
PIN
GND PGND
G
Figure 3. Pin ESD Type
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/30
TSZ02201-0G3G0C400340-1-2
03.Dec.2012 Rev.001

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BD6142AMUV 전자부품, 판매, 대치품
BD6142AMUV
Datasheet
<Condition>
Ta = 25
10 serial×8parallel
LED Current = 20mA
Coil = TDK, LTF5022T-100M1R4-LC
Figure 9. Efficiency
<Condition>
Ta = 25
10 serial×6parallel
LED Current = 20mA
Coil = TDK, LTF5022T-100M1R4-LC
Figure 10. Efficiency
Application example
Figure 11, Figure 12 and Figure 13 are Application examples (15.4inch and 12inch and 10.1inch model). Recommended
schematics and Layout are shown in P22.
7V to 27V
10µF
10µH
2.2µF/50V
2.2µF
VOUT
10 serial x 8 parallel (80pcs)
2.1V to VIN
RESET
PW M
fPWM=100Hz~25kHz
1k
22nF
GND
PGND
LX LX
ENABLE
PW M
FAULT
VIN
VDC
OVP
COMP BD6142AMUV
PGND PGND GND TEST FSET ABC ISET
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
56k1nF
36k
2.2M
68k
20mA
Figure 11. BD6142AMUV Application example (8 parallel)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/30
TSZ02201-0G3G0C400340-1-2
03.Dec.2012 Rev.001

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부품번호상세설명 및 기능제조사
BD6142AMUV

8-Channel White LED Driver

ROHM Semiconductor
ROHM Semiconductor

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