bd81a74efv-凯发k8一触即发
4ch 内置电流驱动器 升降压型 车载用白色led驱动器bd81a74efv-m是35v高耐压的白色led驱动器。1chip中内置4ch恒流输出，高达120ma/ch，适合高亮度led驱动。内置对应升降压电流模式的dc/dc控制器，对于电源电压变动，可实现稳定的动作。可通过pwm输入进行调光控制（10,000:1）。
主要规格
功能安全:
特性：
topology
buck-boost
vin(min.)[v]
4.5
vin(max.)[v]
35
total output current (max.)[ma]
480
per channel drive(max.)[ma]
120
number of outputs
4
vout(max.)[v]
40
switching frequency (max.)[mhz]
2.2
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)
reference design / application evaluation kit
-
- evaluation board - bd81a74efv-tsb-001
4ch white led driver built-in current driver boost dc-dc converter for automotive bd81a74efv-m
| application note | user's guide | brief | layout (pdf) | layout (cad data) |
|---|---|---|---|---|
