BD9B331GWZ

2.7V to 5.5V Input ,3A Integrated MOSFET Single Synchronous Buck DC/DC Converter BD9B331GWZ General Description ROHM’s high efficiency switching regulator, BD9B331GWZ, is a step-down converter designed to produce a low voltage output of 0.6V~3.3V from a 2.7V~5.5V power supply line. It offers high efficiency in all load ranges by automatic PFM/PWM adjustment. It employs an On time control system to provide faster transient response to sudden change in load. Features  Fast transient response with On time control system.  High efficiency for all load range with synchronous rectifier (Nch/Nch FET) and adaptive PFM/PWM system.  Adjustable Soft-start function.  Thermal and UVLO protection.  Short-circuit current protection with pulse count  Shutdown function. Key Specifications  Input Voltage Range: 2.7V to 5.5V  Output Voltage Range: 0.6V to PVCC×0.8V  Output Current: 3.0A (Max)  Switching Frequency: 1.3MHz(Typ)  High Side FET ON Resistance: 23mΩ(Typ)  Low Side FET ON Resistance: 23mΩ(Typ)  Standby Current: 0µA (Typ)  Operating Temperature Range: -40°C to +85°C Package(s) UCSP30L1: W(Typ) x D(Typ) x H(Max) 1.98mm x 1.80mm x 0.33mm Applications Power supply for LSI including SoC, DSP, Micro computer and ASIC  Laptop PC / Tablet PC / Server  LCD TV, Storage Devices (HDD / SSD)  Printer  Amusement  Secondary power supply . UCSP30L1 Typical Application Circuit(s) VIN CIN EN CSS PVCC AVCC EN BD9B331GWZ SS PGD BST SW FB RES AGND PGND CB...