bd9s209nux-凯发k8一触即发
车载用 2.7v～5.5v输入 2a 单通道 同步整流降压型dc-dc转换器bd9s209nux-c是一款内置低导通电阻功率mosfet的同步整流降压型dc-dc转换器。该产品可输出最大2a的电流，其开关频率高达2.2mhz，因此允许使用小型电感器。该产品采用电流模式控制，具有高速瞬态响应性能。另外，还内置有相位补偿电路，仅用很少的外置元器件即可构建应用产品。
主要规格
功能安全:
特性：
ch
1
integrated fet / controller
integrated fet
topology
buck
synchronous / nonsynchronous
synchronous
vin1(min.)[v]
2.7
vin1(max.)[v]
5.5
vout1(min.)[v]
0.8
vout1(max.)[v]
5.5
iout1(max.)[a]
2
sw frequency(max.)[mhz]
2.2
light load mode
no
en
yes
pgood
yes
operating temperature (min.)[°c]
-40
operating temperature (max.)[°c]
125
package size [mm]
2x2 (t=0.6)
common standard
aec-q100 (automotive grade)
特点：
- aec-q100 qualified(grade 1)
- single synchronous buck dc/dc converter
- adjustable soft start function
- output discharge function
- power good output
- input under voltage lockout protection (uvlo)
- short circuit protection (scp)
- output over voltage protection (ovp)
- over current protection (ocp)
- thermal shutdown protection (tsd)
reference design / application evaluation kit
-
- evaluation board - bd9s209nux-tsb-001
this evaluation board was developed for rohm's single synchronous buck dc/dc converter bd9s209nux-c. it is a synchronous buck dc/dc converter with built-in low on resistance power mosfets. bd9s209nux-c accepts a power supply input range of 2.7 v to 5.5 v and generates a maximum output current of 2 a. small inductor is applicable due to high switching frequency of 2.2 mhz. it is a current mode control dc/dc converter and features high-speed transient response. it has a built-in phase compensation circuit. applications can be created with a few external components.
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