BD39012EFV-CE2 ROHM

Datasheet Management IC for Automotive Microcontroller System Regulator for microcontroller for automotive BD39012EFV-C General Description Key Specifications BD39012EFV-C is a power management IC with Input voltage range: 4 V to 45 V 1 ch DC / DC convertor, 1 ch LDO, reset and watch dog (Startup voltage needs to be above 4.5V.) timer. It can supply the power supply to module from Output Voltage Accuracy battery directly. LDO has reset built-in and always Step-down DC / DC Converter FB Voltage: watches that it supplies stable power supply to module. 0.8 V 2 % In addition, window watch dog timer is provided to detect Secondary LDO: 5.0 V 2 % the abnormality of the microcomputer. BD39012EFV-C Output Maximum Current enables a superior heat dissipation and a compact PCB Step-down DC / DC Converter: 1.0 A design by HTSSOP-B24 package. Secondary LDO: 0.4 A Operating Frequency Step-down DC / DC Converter: 200 k to 600 kHz (Typ) Standby Current: 0 A (Typ) Operating Temperature Range: -40 C to +125 C Features Package W(Typ) x D(Typ) x H(Max) Synchronous rectifier step-down DC / DC converter with built-in FET (Adjustable output) HTSSOP-B24 7.80 mm x 7.60 mm x 1.00 mm Secondary LDO with built-in 5 V output FET Monitoring function Output over voltage / under voltage detection (PG output), Reset function (LDO) Window Watchdog Timer Built-in protection function Input under voltage protection (UVLO) Thermal shut down (TSD) Output over current protection (OCP) Independent enable control HTSSOP-B24 package Applications HTSSOP-B24 Microcontroller for Automotive Typical Application Circuit VCC VREG EN1 PVCC VO1 VO1 RT SW (Note1) FB PGND COMP VS VCC or VO1 EN2 VO2 PG1 RST2 PG2 RSTWD CT ENWD CLK RTW GND OPEN These specifications may be changed without a notice. (Note 1) Please connect when the application is that the load current of VO1 output exceed in 500 mA. Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0T2T0AM00180-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/39 TSZ22111 14 001 11.Sep.2014 Rev.002 BD39012EFV-C Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Key Specifications .......................................................................................................................................................................... 1 Package .................................................................................................................................................................................. 1 Typical Application Circuit ............................................................................................................................................................... 1 Pin Description ................................................................................................................................................................................ 3 Block Diagram ................................................................................................................................................................................ 4 Description of Blocks ...................................................................................................................................................................... 5 Absolute Maximum Ratings ............................................................................................................................................................ 7 Recommended Operating Conditions ............................................................................................................................................. 7 Electrical Characteristics................................................................................................................................................................. 8 Typical Performance Curves ......................................................................................................................................................... 11 Application Example ..................................................................................................................................................................... 24 Example of Constant Setting ........................................................................................................................................................ 24 Notes for pattern layout of PCB .................................................................................................................................................... 24 Selection of Components Externally Connected ........................................................................................................................... 25 Power Dissipation ......................................................................................................................................................................... 32 I / O equivalent circuits ................................................................................................................................................................. 33 Operational Notes ......................................................................................................................................................................... 35 Ordering Information ..................................................................................................................................................................... 37 Marking Diagrams ......................................................................................................................................................................... 37 Physical Dimension, Tape and Reel Information ........................................................................................................................... 38 Revision History ............................................................................................................................................................................ 39 www.rohm.com TSZ02201-0T2T0AM00180-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/39 TSZ22111 15 001 11.Sep.2014 Rev.002