BD9329AEFJ

Datasheet 4.2V to 18V, 3A 1ch Synchronous Buck Converter with Integrated FET BD9329AEFJ General Description The BD9329AEFJ is a synchronous step-down switching regulator with built-in two low-resistance N-Channel MOSFETs. This IC can supply continuous output current of 3A over a wide input range, and provides not only fast transient response, but also easy phase compensation because of current mode control. Features  Uses Low ESR Output Ceramic Capacitors  Low Standby Current  380 kHz Fixed Operating Frequency  Feedback Voltage  0.9V ± 1.5%(Ta=25°C)  0.9V ± 2.0%(Ta=-25°C to +85°C)  Under Voltage Protection  Thermal Shutdown  Over Current Protection Key Specifications Input Voltage Range: Output Voltage Range: Output Current: Switching Frequency Hi-Side FET ON-Resistance: Lo-Side FET ON-Resistance: Standby Current: Operating Temperature Range: 4.2V to 18V 0.9V to (VIN x 0.7)V 3.0A (Max) 380kHz(Typ) 0.15Ω(Typ) 0.13Ω(Typ) 15μA (Typ) -40°C to +85°C Package W(Typ) D(Typ) H(Max) Applications Distributed Power Systems Pre-Regulator for Linear Regulators Typical Application Circuit C_SS 0.1μF SS EN COMP FB C_PC 3300pF R_PC 7.5kΩ HTSOP-J8 4.90mm x 6.00mm x 1.00mm R_DW 10kΩ R_UP 27kΩ Thermal Pad (to be shorted to GND) BST R_BS 22Ω VIN C_BS 0.1μF SW GND VIN = 12V C_VC1 10μF L 10µH VOUT = 3.3V C_CO1 20μF R_BS protects from VIN-BST short destruction. Figure 1. Typical Application Circuit Product structure : Silicon monolithic integrated circuit www.roh...