BD81A24EFV-M 반도체 회로 부품 판매점
4ch White LED Driver
|
|
 ROHM Semiconductor |
Datasheet
4ch White LED Driver with Buck-Boost
(40 LED Maximum)
BD81A24MUV-M / BD81A24EFV-M
General Description
BD81A24MUV-M/EFV-M is a white LED driver with the capability of
withstanding high input voltage (35V 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 (5000: 1 dimming
function) is possible by PWM input.
Key Specifications
Operating Input Voltage Range
4.5 to 35 V
Output LED Current Accuracy ±3.0%@50mA
DC/DC Oscillation Frequency 200 to 2200kHz
Operating Temperature Range -40 to +125°C
LED Maximum Output Current
120mA/ch
PWM Min Pulse Width
1.0µs
Features
Integrated Buck-Boost Current Mode DC/DC Controller
Integrated 4ch Current Driver for LED Drive
5000: 1 PWM Dimming @200Hz
External Switching Frequency Synchronization
Built-In Protection Function (UVLO, OVP, OCP, SCP)
LED Abnormality Detection Function (Open/Short)
Integrated VOUT Discharge Function (Buck-Boost or Buck
Structure Limitation)
AEC-Q100 Qualified (Note 1)
(Note 1) Grade1
Package(s) W(Typ) x D(Typ) x H(Max)
VQFN28SV5050
(BD81A24MUV-M)
HTSSOP-B28
(BD81A24EFV-M)
W(Typ) × D(Typ) × H(Max) W(Typ) × D(Typ) × H(Max)
5.0mm × 5.0mm ×1.0mm 9.7mm × 6.4mm × 1.0mm
Application
For Display audio, CID, Cluster, HUD
Small and Medium type LCD Panels for Automotive use.
Typical Application Circuit
VCC CIN
VCC
CREG
VREG
EN
VDISC
SYNC
RT
RRT
COMP
RPC
CPC
CSS
SS
BD81A24MUV-M /
BD81A24EFV-M
PWM
ISET
RISET
GND
OVP
CS
BOOT
OUTH
SW
OUTL
DGND
LED1
LED2
LED3
LED4
PGND
FAIL1
FAIL2
VREG
SHDETEN
LEDEN1
LEDEN2
Figure 1. Buck-Boost Application Circuit
Product structure: Silicon monolithic integrated circuit
This product has no designed protection against radioactive rays
COUT
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
1/36
TSZ02201-0T3T0C600070-1-2
2016.2.8 Rev.001
BD81A24MUV-M/EFV-M
Pin Description
VQFN28SV5050 (Top view)
HTSSOP-B28 (Top view)
Figure 2. Pin Configuration
Block Diagram
Datasheet
Pin Configuration
VQFN28
SV5050
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
-
HTSSOP
-B28
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
-
Terminal
Name
LEDEN1
LEDEN2
LED1
LED2
LED3
LED4
OVP
ISET
PGND
OUTL
DGND
VDISC
SW
OUTH
BOOT
VREG
EN
CS
VCC
SS
COMP
RT
SYNC
SHDETEN
GND
PWM
FAIL1
FAIL2
Thermal
PAD
Function
LED output pin enable terminal 1
LED output pin enable terminal 2
LED output terminal 1
LED output terminal 2
LED output terminal 3
LED output terminal 4
Over-voltage detection terminal
LED output current setting terminal
LED output GND terminal
Low side FET drain terminal
DC/DC output GND terminal
Output voltage discharge terminal
High side FET source terminal
High side FET gate terminal
High side FET driver power supply terminal
Internal constant voltage
Enable terminal
DC/DC current sense terminal
Input power supply terminal
“Soft Start” Capacitor connection
ERR AMP output
Oscillation Frequency-setting resistor input
External synchronization input terminal
Short detection enable signal
Small signal GND terminal
PWM light modulation input terminal
“Failure” signal output terminal
LED open/short detection output signal
Back side thermal PAD
(Please connect to GND)
VCC
EN
SYNC
RT
VREG
UVLO
TSD
VDISC
OVP
VREG
PWM
OVP10
Timer
Latch
OCP
＋
－
Control Logic
DRV
CTL
OSC
SLOPE
PWM
VREG
OVP
CS
FAIL1
BOOT
OUTH
SW
OUTL
COMP
SS
OCP OVP
SS
PWM
ISET
GND
ISET
ERRAMP －
－
－
－
－
＋
Current driver
Open Short Detect
Open Det
Timer
Latch
Short Det
DGND
LED1
LED2
LED3
LED4
PGND
FAIL2
SHDETEN LEDEN1 LEDEN2
Figure 3. Internal Block Diagram
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
2/36
TSZ02201-0T3T0C600070-1-2
2016.2.8 Rev.001
|
PDF 파일 내의 페이지 : 총 30 페이지
제조업체: ROHM Semiconductor
( rohm )
BD81A24EFV-M led
데이터시트 다운로드 :
[ BD81A24EFV-M.PDF ]
[ BD81A24EFV-M 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
