BD9B304QWZ
2.7V～5.5V 输入3.0A MOSFET内置 1ch同步整流降压 DC/DC转换器
BD9B304QWZ
2.7V～5.5V 输入3.0A MOSFET内置 1ch同步整流降压 DC/DC转换器
BD9B304QWZ是内置低导通电阻的功率MOSFET的同步整流降压型开关稳压器。最大可输出3A的电流。采用轻负载时进行低消耗动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。
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]
0.8
Vout1(Max.)[V]
4.4
Iout1(Max.)[A]
3
SW frequency(Max.)[MHz]
2
Light Load mode
Yes
EN
Yes
PGOOD
No
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
2x2 (t=0.4)
特点：
- Single Synchronous Buck DC/DC Converter
- Constant On-time Control Suitable to Deep-SLLM
- Over Current Protection
- Short Circuit Protection
- Thermal Shutdown Protection
- Under Voltage Lockout Protection
- UMMP008AZ020 Package (Backside Heat Dissipation)
Reference Design / Application Evaluation Kit
-
- Evaluation Board - BD9B304QWZ-EVK-001
This EVK was developed for ROHM’s synchronous buck DC/DC converter BD9B304QWZ. The BD9B304QWZ accepts a power supply input range of 2.7V to 5.5V, and generates an output voltage from 0.8V to 0.8 x VIN using external resistors. It has a built-in 40mΩ N-channel MOSFET for High side and Low Side that is operating frequency is 1.0MHz/2.0MHz selectable.
