Datasheet 8.0V to 35V, 3.0A/1.5A 1ch Buck Converter with Integrated FET BD9873CP-V5 BD9874CP-V5 General Description Key Specifications The BD9873CP-V5 and BD9874CP-V5 is a Input Voltage Range: 8.0V to 35V single-channel step-down switching regulator integrated Output Voltage Range:1.0V to 0.8Vx(VCC-IOUTxRON)V with a P-Channel MOSFET. Its circuitry eliminates the Output Current: need for external compensation and consisting only of a BD9873CP-V5: 1.5A(Max) diode, a coil and a ceramic capacitor, reducing the board BD9874CP-V5: 3.0A(Max) size significantly. Switching Frequency: 110kHz(Typ) P-Channel FET ON-Resistance: BD9873CP-V5: 1.0(Typ) Features BD9874CP-V5: 0.5(Typ) Built-in P-Channel FET Ensures High Efficiency Standby Current: 1A(Typ) Output Voltage Adjustable Via External Resistors Operating Temperature Range: -40C to +85C Soft-Start Time : 4ms (fixed) Built-in Over-Current and Thermal Shutdown Protection Circuits Package W(Typ) x D(Typ) x H(Max) ON/OFF Control Via STBY Pin Applications TVs, Printers, DVD Players, Projectors, Gaming Devices, PCs, Car Audio/Navigation Systems, ETCs, Communication Equipment, AV Products, Office Equipment, Industrial Devices, and more. Typical Application Circuit TO220CP-V5 10.00mm x 20.12mm x 4.60mm L 1 V VIN OUT VCC OUT C2 C IN D 1 C 1 C3 R1 ST BY INV R2 GND Figure 1. Typical Application Circuit Product structure Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0Q3Q0AJ00440-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/19 05.Nov.2014 Rev.001 TSZ22111 14 001 BD9873CP-V5 BD9874CP-V5 Pin Configuration TOP VIEW 1 2 3 4 5 STBY VCC GND OUT INV Figure 2. Pin Configuration Pin Descriptions Pin No. Pin Name Function 1 VCC Input power supply pin 2 OUT Internal P-Channel FET drain pin 3 GND Ground 4 INV Output voltage feedback pin 5 STBY ON/OFF control pin Block Diagram VCC 1 VREF DRIVER PWM COMP OSC STBY 5 CTL STBY LOGIC 2 TSD OCP OUT Error AMP 4 INV SS 3 GND Figure 3. Block Diagram www.rohm.com TSZ02201-0Q3Q0AJ00440-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/19 05.Nov.2014 Rev.001 TSZ22111 15 001