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| 型号： | BD8119FM-ME2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/23页 |
| 文件大小： | 0K |
| 描述： | IC WHITE LED DVR PWM 28-HSOP |
| 应用说明： | Automotive Applications |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED），白色 LED |
| 频率： | 250kHz ~ 550kHz |
| 电源电压： | 5 V ~ 30 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-HSOP |
| 供应商设备封装： | 28-HSOP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 95°C |
| 其它名称： | BD8119FM-ME2DKR |
Power Management IC Series for Automotive Body Control
White Backlight LED Driver
for Medium to Large LCD Panels
(Switching Regulator Type)
BD8119FM-M
No.11039EBT07
● Description
BD8119FM-M is a white LED driver with the capability of withstanding high input voltage (36V MAX).
This driver has 4ch constant-current drivers integrated in 1-chip, which each channel can draw up to 150mA max, so that
high brightness LED driving can be realized.
Furthermore, a current-mode buck-boost DC/DC controller is also integrated to achieve stable operation against unstable
car-battery voltage input and also to remove the constraint of the number of LEDs in series connection.
The brightness can be controlled by either PWM or VDAC techniques.
● Features
1) Input voltage range is 5.0 to 30 V
2) Integrated buck-boost current-mode DC/DC controller
3) Four integrated LED current driver channels (150mA max. each channel)
4) PWM Light Modulation (Minimum Pulse Width 25μs)
5) Built-in protection functions (UVLO, OVP, TSD, OCP, SCP)
6) Abnormal status detection function (OPEN/ SHORT)
7) HSOP-M28 package
● Applications
Backlight for car navigation, dashboard panels, etc.
( ※ Recommended Component of Toshiba Matsushita Display Technology Co.,Ltd. )
● Absolute maximum ratings (Ta=25 ℃ )
Parameter
Power supply voltage
BOOT ,OUTH Voltage
SW,CS Voltage
BOOT-SW Voltage
LED output voltage
VREG, OVP, OUTL, FAIL1, FAIL2,
LEDEN1, LEDEN2, ISET, VDAC,
PWM, SS, COMP, RT, SYNC, EN Voltage
Symbol
V CC
V BOOT, V OUTH
V SW, V CS, V OUTH
V BOOT-SW
V LED1 ～ 4
V VREG, V OVP, V OUTL, V FAIL1, V FAIL2,
V LEDEN1, V LEDEN2, V ISET, V VDAC,
V PWM, V SS, V COMP, V RT, V SYNC, V EN
Ratings
36
41
36
7
36
-0.3 ～ 7 < V CC
Unit
V
V
V
V
V
V
Power Consumption
Pd
2.20
※ 1
W
Operating temperature range
Storage temperature range
Topr
Tstg
-40 ～ +95
-55 ～ +150
℃
℃
LED maximum output current
I LED
150
※ 2 ※ 3
mA
※ 1 IC mounted on glass epoxy board measuring 70mm×70mm×1.6mm, power dissipated at a rate of 17.6mw/ ℃ at temperatures above 25 ℃ .
※ 2 Dispersion figures for LED maximum output current and V F are correlated. Please refer to data on separate sheet.
※ 3 Amount of current per channel.
● Operating conditions (Ta=25 ℃ )
Parameter
Power supply voltage
Oscillating frequency range
Symbol
V CC
F OSC
Ratings
5.0 ～ 30
250 ～ 550
Unit
V
kHz
External synchronization frequency range
External synchronization pulse duty range
※ 4 ※ 5
F SYNC
F SDUTY
fosc ～ 550
40 ～ 60
kHz
%
※ 4 Connect SYNC to GND or OPEN when not using external frequency synchronization.
※ 5 Do not switch between internal and external synchronization when an external synchronization signal is input to the device.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
1/20
2011.08 - Rev.B
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