BD9E103FJ-E2 ROHM

Datasheet 7V to 28V Input, 1.5A Integrated MOSFET Single Synchronous Bu ck DC/DC Converter BD9E103FJ General Description Key Specifications BD9E103FJ is a single synchronous buck DC/DC Input Voltage Range: 7V to 28V converter with built-in low on-resistance power Fixed Output Voltage: 5.0V (Typ) TM MOSFETs. The SLLM control provides excellent Output Current: 1.5A (Max) efficiency characteristics in light-load conditions which Switching Frequency: 330kHz (Typ) make the product ideal for equipment and devices that High-Side MOSFET ON-Resistance: 250m (Typ) demand minimal standby power consumption. Low-Side MOSFET ON-Resistance: 200m (Typ) BD9E103FJ is a current mode control DC/DC converter and features high-speed transient response. Phase compensation can also be set easily. Package W (Typ) x D (Typ) x H (Max) SOP-J8 4.90 mm x 6.00 mm x 1.65 mm Features Single Synchronous Buck DC/DC Converter 5V Fixed Output Voltage TM SLLM (Simple Light Load Mode) Control Efficiency = 80% ( IOUT=10mA) Over Current Protection Short Circuit Protection Thermal Shutdown Protection Under Voltage Lockout Protection Over Voltage Protection Internal Soft Start Reduced External Diode SOP-J8 Package SOP-J8 Applications Consumer Applications such as Home Appliance Secondary Power Supply and Adapter Equipment Telecommunication Devices Typical Application Circuit V 2 VIN BOOT 1 IN 0.1F BD9E103FJ C IN SW 8 V OUT 22H C OUT 3 NC COMP NC GND VOUT 6 4 7 5 Figure 1. Application Circuit Product structureSilicon monolithic integrated circuit. This product has no designed protection against radioactive rays. w ww.rohm.com TSZ02201-0F3F0AJ00140-1-2 2017 ROHM Co., Ltd. All rights reserved. 1/24 TSZ22111 14 001 25.Sep.2017 Rev.001 BD9E103FJ Pin Configuration (TOP VIEW) SW BOOT 1 8 VIN 2 7 GND 6 COMP NC 3 NC 4 5 VOUT Pin Description Pin No. Pin Name Description Connect a bootstrap capacitor of 0.1F between BOOT terminal and SW terminal. 1 BOOT The voltage of this capacitor is the gate drive voltage of the High-Side MOSFET. Power supply terminal for the switching regulator and control circuit. 2 VIN Connecting a more than 10F ceramic capacitor is recommended. 3 NC No connection terminal. 4 NC No connection terminal. 5 VOUT Output voltage sense terminal. Output terminal for the error amplifier and input terminal for PWM comparator. 6 COMP Connect phase compensation components to this terminal. 7 GND Ground terminal for the control circuit and output stage of the switching regulator. Switch terminal. This terminal is connected to the source of the High-Side MOSFET and drain of the Low-Side MOSFET. Connect a bootstrap capacitor of 0.1F between BOOT 8 SW terminal and SW terminal. In addition, connect an inductor of 22H considering the direct current superimposition characteristic. www.rohm.com TSZ02201-0F3F0AJ00140-1-2 2017 ROHM Co., Ltd. All rights reserved. 2/24 TSZ22111 15 001 25.Sep.2017 Rev.001