Datasheet 8V to 35V, 1.5A 1ch Buck Converter with Integrated FET BD9703FP BD9703CP-V5 BD9703T BD9703T-V5 General Description Key Specifications The BD9703xx is a series of single-channel step-down Input Voltage Range: 8Vto 35V switching regulators capable of PWM operation. It has a Output Voltage Range: 1.0V to 32V built-in P-Channel MOSFET making its efficiency high Output Current: 1.5A (Max) at small loads. It has lower power consumption Switching Frequency: 300KHz(Typ) because it is made under Bi-CMOS process. Its FET ON-Resistance: 1.0(Typ) operating current is only 4mA (Typ) and standby current Standby Current: 0A (Typ) is 0A (Typ). Operating Temperature Range: -40C to +85C Packages W(Typ) x D(Typ) x H(Max) Features Built-In P-Channel MOSFET for High Efficiency Adjustable Output Voltage Via External Resistors Built-In Over-Current Protection and Thermal Shutdown Circuits ON/OFF Control Via STBY Pin TO252-5 TO220CP-V5 Applications 6.50mm x 9.50mm x 2.50mm 10.00mm x 20.12mm x 4.60mm TVs, Printers, DVD Players, Projectors, Gaming Devices, PCs, Car Audio/Navigation Systems, ETCs, Communication Equipment, AV Products, Office Equipment, Industrial Devices, and more. TO220FP-5 TO220FP-5(V5) 10.00mm x 30.50mm x 4.60mm 10.00mm x 31.50mm x 8.15mm Typical Application Circuit + C1 C2 VCC 1 L OUT 1 5.0V 2 + D1 C 4 C 3 STBY 5 C 5 R1 : 4k INV 4 R : 1k 2 3 GND Figure 1. Typical Application Circuit Product structure Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0Q3Q0AJ00410-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/20 04.Nov.2014 Rev.001 TSZ22111 14 001 BD9703FP BD9703CP-V5 BD9703T BD9703T-V5 Block Diagram VCC 1 VREF PWM COMP DRIVER OSC STBY STBY 5 CTL LOGIC OUT 2 TSD OCP INV Error AMP 4 3 GND Figure 2. Block Diagram Pin Configuration TO252-5 TO220CP-V5 TO220FP-5 TO220FP-5(V5) (TOP VIEW) (TOP VIEW) (TOP VIEW) (TOP VIEW) GND 3 1 2 3 4 5 1 5 3 1 2 3 4 5 1 2 4 5 2 4 Pin Description Pin No. Pin Name Function 1 VCC Input power supply pin 2 OUT Internal Pch FET drain pin (Note 1) 3,FIN GND Ground 4 INV Output voltage feedback pin 5 STBY ON/OFF control pin (Note 1) FIN is assigned in the case of TO252-5. www.rohm.com TSZ02201-0Q3Q0AJ00410-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/20 TSZ22111 15 001 04.Nov.2014 Rev.001 VCC OUT GND INV STBY U VCC OUT GND INV STBY VCC OUT GND INV STBY VCC OUT GND INV STBY U