BD9G341AEFJ-E2

General Description

The BD9G341AEFJ is a buck switching regulator with 

integrated 150mΩ power MOSFET. Current mode 

architecture provides fast transient response and a simple 

phase compensation setup. The operating frequency is 

programmable from 50kHz to 750kHz. Additional 

protection features are included such as Over Current 

Protection, Thermal shutdown and Under voltage lockout. 

The under voltage lockout and hysteresis can be set by 

external resistor.

Features

◼ Wide input voltage range from 12V to 76V.

◼ Integrated 80V/3.5A/150mΩ NchFET.

◼ Current mode.

◼ Variable frequency from 50kHz to 750kHz.

◼ Accurate reference voltage. (1.0 V±1.5 %).

◼ Precision ENUVLO threshold (±3%).

◼ Soft-start function

◼ 0uA Standby current

◼ Over Current Protection (OCP), Under Voltage 

Lockout(UVLO), Thermal-Shutdown(TSD), Over 

Voltage Protection (OVP)

Thermally enhanced HTSOP-J8 package

Applications

◼ Industrial distributed power applications.

◼ Battery powered equipment.

Key specifications

■ Input voltage                        12 to 76[V] 

■ Ref voltage(Ta=25°C)                 ±1.5[%] 

           (Ta=-40 to 85°C)                 ±2.0[%] 

■ Max output current               3 [A] (Max.)

■ Operating Temperature     -40°C to 85°C

■ Max junction temperature              150°C