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BD81A04AEFV-M PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD81A04AEFV-M
기능 4ch White LED Driver
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BD81A04AEFV-M 데이터시트, 핀배열, 회로
Datasheet
4ch White LED Driver with Buck-Boost and
Built-in FET (32 LED Maximum)
BD81A04AMUV-M BD81A04AEFV-M
General Description
BD81A04AMUV-M/EFV-M is a white LED driver with the capability
of withstanding high input voltage (40V Max). This driver has 4ch
constant-current drivers integrated in 1-chip, where each channel
can draw up to 120mA (Max), which is also suitable for high
illumination LED drive. Furthermore, a buck-boost current mode
DC/DC controller is also integrated to achieve stable operation
during power voltage fluctuation. Light modulation (dimming
function) is possible by PWM input. The Nch MOSFET for power
surge is also integrated in the chip, thereby saving spaces of board
sets.
Key Specifications
Operating Input Voltage Range
Output LED Current Accuracy
DC/DC Oscillation Frequency
Operating Temperature Range
LED Maximum Output Current
4.5 to 35 V
±3.0%@50mA
200 to 2200kHz
-40 to +125
120mA/ch
Package
W(Typ) x D(Typ) x H(Max)
Features
Integrated Buck-Boost current mode DC/DC controller
Integrated 4ch current driver for LED drive
PWM light modulation (Dimming)-supported
External switching frequency synchronization
Built-In protection function (UVLO, OVP, OCP, SCP)
LED abnormality detection function (Open/Short)
Integrated VOUT discharge function (Buck-Boost structure
limitation)
AEC-Q100 Qualified
Application
Audio Display, Small and Medium type LCD Panels for
Automotive use.
VQFN28SV5050
BD81A04AMUV-M
5.00mm x 5.00mm x 1.00mm
HTSSOP-B28
BD81A04AEFV-M
9.70mm x 6.40mm x 1.00mm
Application Circuit Diagram
CIN
VIN
(GND)
(GND)
(GND)
VREG
VCC
EN
VDISC
OVP
CS
BOOT
OUTH
SW
Vout
COUT
(DGND)
(DGND)
RRT
(GND)
SYNC
RT
RPC
CPC
(GND)
CSS
(GND)
COMP
SS
PWM
(DGND)
OUTL
BD81A04AMUV-M /
DGND
BD81A04AEFV-M
(DGND)
LED 1
LED 2
LED 3
LED 4
RISET
(GND)
(GND)
ISET
GND
SHDETEN
LEDEN 1
LEDEN 2
PGND
FAIL 1
(PGND)
FAIL 2
Figure 1. Buck-Boost Application Circuit
Product structure Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
This product has no designed protection against radioactive rays
1/34
TSZ02201-0G3G0C600010-1-2
4.Dec.2013 Rev.003
Free Datasheet http://www.datasheet4u.com/




BD81A04AEFV-M pdf, 반도체, 판매, 대치품
BD81A04AMUV-M BD81A04AEFV-M
Datasheet
Electrical Characteristics (VCC=12V, Ta = Tj = -40°C to +125°C *Unless otherwise specified)
Parameter
Symbol
Min
Limits
Normal
Max Unit
Conditions
Circuit Current
EN=High, SYNC=High, RT=OPEN
ICC - - 10 mA PWM=Low, ISET=OPEN,CIN=10μF
Standby Current
IST - - 10 μA EN=Low, VDISC=OPEN
[VREG]
Reference Voltage
VREG
4.5 5.0 5.5 V IREG=-5mA, CREG=2.2μF
[OUTH]
OUTH High Side
ON-Resistance
OUTH Low Side
ON-Resistance
1.9 3.5 6.2 ION=-10mA, Ta=25°C
RONHH
1.5 3.5 7.0 ION=-10mA, Ta=-40°C to +125°C
1.0 2.5 5.0 ION=10mA, Ta=25°C
RONHL
0.8 2.5 5.5 ION=10mA, Ta=-40°C to +125°C
OCP Detection Voltage
[OUTL]
OUTL High Side
ON-Resistance
[SW]
SW Low Side
ON-Resistance
[Error AMP]
VOLIMIT
VCC-0.66 VCC-0.6 VCC-0.54 V
RONL
0.44
0.8
1.15
ION=10mA, Ta=25°C
0.20
0.8
2.10
ION=10mA, Ta=-40°C to +125°C
5.0
10.0
15.0
ION=10mA, Ta=25°C
RON_SW
4.0
10.0
25.0
ION=10mA, Ta=-40°C to +125°C
LED Control Voltage
COMP Sink Current
COMP Source Current
[Oscillator]
Oscillation Frequency 1
Oscillation Frequency 2
[OVP]
VLED
ICOMPSINK
ICOMPSOURCE
0.9
20
-160
1.0
80
-80
1.1 V
160 μA VLED=2V, VCOMP=1V
-20 μA VLED=0V, VCOMP=1V
fosc1
fosc2
285
1800
300
2000
315
2200
kHz RT=27k
kHz RT=3.9k
OVP Detection Voltage
VOVP1
1.9 2.0 2.1 V VOVP=Sweep Up
OVP Hysteresis Width
VOVPHYS1
0.45
0.55
0.65
V VOVP=Sweep Down
Pre-Boost Detection Voltage
VOVP2
0.9 1.0 1.1 V VOVP=Sweep Up
Pre-Boost Hysteresis Width
VOVPHYS2
0.33
0.43
0.53
V VOVP=Sweep Down
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
4/34
TSZ02201-0G3G0C600010-1-2
4.Dec.2013 Rev.003
Free Datasheet http://www.datasheet4u.com/

4페이지










BD81A04AEFV-M 전자부품, 판매, 대치품
BD81A04AMUV-M BD81A04AEFV-M
Typical Performance Curves - continued
52
52
Datasheet
51
50
VCC=12V,EN=4V
49 VLED=SWEEP
Ta=25
48
0
1234
SSuuppplpylyVoVlotaltgaege: V: VLELEDD[[VV]]
5
Figure 8. Output Current vs Supply Voltage
51 VCC=12V
EN=4V
VLED 2V
PWM VREG
50
49
48
-60
-20 20
60 100
Temperature Ta[]
140
Figure 9. Output Current vs Temperature
100
95
90
85
80
75
VCC=12V
EN=4V
70 PWM=VREG
Ta=25
65 4-LED Series, 4ch Mode
60
80
130 180 230
OOuuttppuutt cCuurrrreenntt: IILLEEDD[m[mAA] ]
Figure 10. Efficiency vs Output Current
(Buck-Boost Application)
100
95
90
85
80
75
VCC=12V
70 EN=4V
PWM=VREG
Ta=25
65 7-LED Series, 4ch Mode
60
80
130 180 230
OOuutptpuut ct uCrurerrnetnt :ILIELEDD[[mmAA]]
Figure 11. Efficiency vs Output Current
(Boost Application)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
7/34
TSZ02201-0G3G0C600010-1-2
4.Dec.2013 Rev.003
Free Datasheet http://www.datasheet4u.com/

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BD81A04AEFV-M

4ch White LED Driver

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