Power Management IC Series for Automotive Body Control
White Backlight LED Driver
for Medium to Large LCD Panels
(Switching Regulator Type)
No.10039EAT07
BD8119FM-M
●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
Symbol
VCC
Ratings
Unit
V
36
41
36
7
BOOT Voltage
VBOOT
V
SW,CS,OUTH Voltage
BOOT-SW Voltage
LED output voltage
VSW, VCS, VOUTH
VBOOT-SW
VLED1
V
V
36
V
4
~
VREG, OVP, OUTL, FAIL1, FAIL2,
LEDEN1, LEDEN2, ISET, VDAC,
PWM, SS, COMP, RT, SYNC, EN Voltage
VVREG, VOVP, VOUTL, VFAIL1, VFAIL2,
VLEDEN1, VLEDEN2, VISET, VVDAC,
VPWM, VSS, VCOMP, VRT, VSYNC, VEN
-0.3~7 < VCC
V
1
※
Power Consumption
Pd
Topr
Tstg
ILED
2.20
W
℃
Operating temperature range
Storage temperature range
LED maximum output current
-40~+95
-55~+150
℃
2
3
※
※
150
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 VF are correlated. Please refer to data on separate sheet.
※3 Amount of current per channel.
●Operating conditions (Ta=25℃)
Parameter
Power supply voltage
Symbol
VCC
Ratings
5.0~30
Unit
V
Oscillating frequency range
FOSC
250~550
fosc~550
40~60
kHz
kHz
%
4
5
※
※
External synchronization frequency range
FSYNC
External synchronization pulse duty range
FSDUTY
※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.
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2010.08 - Rev.A
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