BD89630EFJ-E2 ROHM

Datasheet 2.7V to 5.5V, 2A 1ch Synchronous Buck Converter integrated FET BD89630EFJ General Description Key Specification ROHMs high efficiency step-down switching regulator Input voltage range: 2.7V to 5.5V BD89630EFJ is a power supply designed to produce a Output voltage range: 1.0V to 2.5V low voltage including 1 volts from 5.5/3.3 volts power Average output Current: 2A(Max.) supply line. Offers high efficiency with synchronous Switching frequency: 1MHz(Typ.) rectifier. Employs a current mode control system to Pch FET ON resistance: 145m(Typ.) provide faster transient response to sudden change in Nch FET ON resistance: 80m(Typ.) load. Standby current: 5 A (Typ.) Operating temperature range: -25 to +85 Features Offers fast transient response with current mode PWM control system. Package (Typ.) (Typ.) (Max.) Offers highly efficiency for all load range with HTSOP-J8 4.90mm x 6.00mm x 1.00mm synchronous rectifier (Nch/Pch FET) Incorporates soft-start function. Incorporates thermal protection and ULVO functions. Incorporates short-current protection circuit with time delay function. Incorporates shutdown function Applications Power supply for LSI including DSP, Micro computer and ASIC HTSOP-J8 Typical Application Circuit Cin L VCC VCC EN SW VOUT ADJ RFB1 VADJ COMP VADJ GND CO RCOMP RFB2 CCOMP Fig.1 Typical Application Circuit Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays. www.rohm.com TSZ02201-0J3J0AJ00270-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/21 TSZ2211114001 2012.08.28 Rev.001DatasheetDatasheet BD89630EFJ Pin configuration(TOP VIEW) COMP ADJ N.C GND EN SW VCC SW Fig.2 Pin configuration Pin Description Pin No. Pin name PIN function 1 COMP GmAmp output pin/Connected phase compensation capacitor 2 GND Ground 3 EN Enable pin(Active High, Open Active) 4 VCC VCC power supply input pin 5 SW Pch/Nch FET drain output pin 6 SW Pch/Nch FET drain output pin 7 N.C Non Connect 8 ADJ Output voltage detect pin Block Diagram VCC SW SW GND Fig.3 Block Diagram www.rohm.com TSZ02201-0J3J0AJ00270-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/21 TSZ2211115001 2012.08.28 Rev.001