bd81a74efv-凯发线上登陆下载网址
4ch 内置电流驱动器 升降压型 车载用白色led驱动器主要规格
功能安全:
特性：
topology
buck-boost
vin(min.)[v]
4.5
vin(max.)[v]
35
output current(max.)[ma]
480
number of outputs
4
vout(max.)[v]
40
frequency(max.)[mhz]
2.2
integrated fet
no
dimming
pwm
operating temperature (min.)[°c]
-40
operating temperature (max.)[°c]
125
package size [mm]
9.7x6.4 (t=1)
common standard
aec-q100 (automotive grade)
特点：
- aec-q100 qualified(grade 1)
- 4ch current driver for led drive
- buck-boost current mode dc/dc controller
- control dc/dc converter oscillation frequency by external synchronized signal
- spread spectrum function
- lsi protection function (uvlo, ovp, tsd, ocp, scp)
- led abnormality detection function (open/short)
- vout discharge function (buck-boost structure limitation)
evaluation
board
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- evaluation board
- bd81a74efv-tsb-001
this is an evaluation board for rohm’s led driver bd81a74efv-m. bd81a74efv-m is a white led driver with the capability of withstanding high input voltage (maximum 35 v). this driver has 4ch constant current drivers in 1-chip, where each channel can draw up to 120 ma (max), and it is suitable for high illumination led drive. furthermore, a boost current mode dc/dc converter is also built to achieve stable operation during power voltage fluctuation.
-
- reference design
- refled001
the refled001 is a reference design of bd81a74efv-m led driver ic dedicated for automotive backlight application.
