BD9B333GWZ
1ch同步整流 降压 DC/DC转换器，2.7V～5.5V 输入 3.0A MOSFET内置
BD9B333GWZ
1ch同步整流 降压 DC/DC转换器，2.7V～5.5V 输入 3.0A MOSFET内置
BD9B333GWZ是内置低导通电阻的功率MOSFET的同步整流降压型DC/DC转换器。最大可输出3A的电流。采用轻负载时进行低功耗工作的独创恒定时间控制方式，适用于要降低待机功耗的设备。振荡频率高，适用于小型电感。是恒定时间控制DC/DC转换器，具有高速负载响应性能。BD9B333GWZ 采用小型CSP封装，可在大功率密度下减少贴装面积。
主要规格
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]
0.6
Vout1(Max.)[V]
4.4
Iout1(Max.)[A]
3
SW frequency(Max.)[MHz]
1.3
Light Load mode
Yes
EN
Yes
PGOOD
Yes
Operating Temperature (Min.)[°C]
-55
Operating Temperature (Max.)[°C]
150
Package Size [mm]
1.98x1.8 (t=0.4)
特点：
- Input Voltage Range: 2.7V to 5.5V
- Output Voltage Range: 0.6 V to VIN x 0.8 V
- Output Current: 3A (Max)
- Switching Frequency: 1.3MHz (Typ)
- High-Side MOSFET ON Resistance: 23mΩ (Typ)
- Low-Side MOSFET ON Resistance: 23mΩ (Typ)
- Standby Current: 0μA (Typ)
Reference Design / Application Evaluation Kit
-
- Evaluation Board - BD9B333GWZ-EVK-001
This EVK was developed for ROHM’s synchronous buck DC/DC converter BD9B333GWZ. The BD9B333GWZ accepts a power supply input range of 2.7V to 5.5V, and generates an output voltage from 0.6V to 0.8 x VIN using external resistors. It has a built-in 23mΩ N-channel MOSFET on both upper and lower sides that is operating frequency is 1.3MHz.
