Datasheet Single-chip Type with Built-in FET Switching Regulator Series Step-up / Inverted 2ch Switching Regulator BD81870EFV-M General Description Special Characteristics BD81870EFV is current mode step-up and inverted 2 Reference Accuracy 3%(Ta=-40 to 105C) channel switching regulator with built in FET. Switching Frequency 14.3%(Ta=-40 to 105C) Key Specification Features Input voltage range 2.5V to 5.5V (Note 1) AEC-Q100 Qualified Step-up Output voltage range Wide input voltage range 2.5V to 5.5V VDD x 1.24 to 18.0V High Frequency 2.1MHz Inverted Output voltage range Built-in 300m/22V Nch FET and 300m/15.5V Pch VDD - 13.0V to -1.0V FET. Switching Frequency 2.1MHz(Typ.) Built-in 150m high-side switch for boost channel with soft-start function Nch FET ON resistance 300m(Typ.) Independent ON/OFF signal, Built-in discharge switch Pch FET ON resistance 300m(Typ.) Circuits protectionOCP, SCP, OVP, UVLO, TSD Operating Temperature range -40C to +105C (Note 1:Grade2) Package W (Typ.) x D (Typ.) x H (Max.) Applications HTSSOP-B20 6.5mm x 6.4mm x 1.00mm Car navigation panel, Car instrument panel HTSSOP-B20 Typical Application Circuit (TOP VIEW) VDD VOUT1 VDDP LX1 VDDP DIS1 VDDP NON1 HS2L VREF VOUT2 BD81870 LX2 N.C. GNDP HSWON (HTSSOP-B20) VOUT2 SEQON DIS2 STB1 GNDA STB2 VDD VDDA INV2 Figure 1. Application Circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays .w ww.rohm.com TSZ02201-0313AAF00650-1-2 2016 ROHM Co., Ltd. All rights reserved. 1/32 TSZ22111 14 001 25.May.2018 Rev.002 BD81870EFV-M Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Typical Application Circuit ............................................................................................................................................................... 1 Special Characteristics ................................................................................................................................................................... 1 Key Specification ............................................................................................................................................................................ 1 Package .......................................................................................................................................................................................... 1 Pin Configuration ............................................................................................................................................................................ 3 Pin Description ................................................................................................................................................................................ 3 Block Diagram ................................................................................................................................................................................ 4 Description of each Block ............................................................................................................................................................... 5 Absolute Maximum Ratings ............................................................................................................................................................ 7 Thermal Resistance ........................................................................................................................................................................ 8 Recommended Operating Ranges ................................................................................................................................................. 8 Electrical Characteristics................................................................................................................................................................. 9 Typical Performance Curves ......................................................................................................................................................... 11 Timing Chart 1 .............................................................................................................................................................................. 17 Timing Chart 2 .............................................................................................................................................................................. 18 Application Circuite components list ............................................................................................................................................. 19 Usable Component Range............................................................................................................................................................ 20 Selecting Application Components ............................................................................................................................................... 21 Notice for application .................................................................................................................................................................... 23 Layout Guideline ........................................................................................................................................................................... 25 Operational Notes ......................................................................................................................................................................... 27 Ordering Information ..................................................................................................................................................................... 30 Marking Diagram .......................................................................................................................................................................... 30 Physical Dimension, Tape and Reel Information ........................................................................................................................... 31 Revision History ............................................................................................................................................................................ 32 www.rohm.com TSZ02201-0313AAF00650-1-2 2016 ROHM Co., Ltd. All rights reserved. 2/32 TSZ22111 15 001 25.May.2018 Rev.002