Datasheet
Single-chip Type with Built-in FET Switching Regulator Series
Step-up / Inverted 2ch Switching Regulator
BD81...
Datasheet
Single-chip Type with Built-in FET Switching Regulator Series
Step-up / Inverted 2ch Switching Regulator
BD81870EFV-M
General Description BD81870EFV is current mode step-up and inverted 2 channel switching regulator with built in FET.
Features AEC-Q100 Qualified(Note 1) Wide input
voltage range 2.5V to 5.5V High Frequency 2.1MHz Built-in 300mΩ/22V Nch FET and 300mΩ/15.5V Pch FET. Built-in 150mΩ high-side switch for boost channel with soft-start function Independent ON/OFF signal, Built-in discharge switch Circuits protection：OCP, SCP, OVP, UVLO, TSD (Note 1:Grade2)
Applications Car navigation panel, Car instrument panel
Special Characteristics
Reference Accuracy：
±3%(Ta=-40 to 105°C)
Switching Frequency： ±14.3%(Ta=-40 to 105°C)
Key Specification
Input
voltage range：
2.5V to 5.5V
Step-up Output
voltage range：
VDD x 1.24 to 18.0V
Inverted Output
voltage range：
VDD - 13.0V to -1.0V
Switching Frequency：
2.1MHz(Typ.)
Nch FET ON resistance：
300mΩ(Typ.)
Pch FET ON resistance：
300mΩ(Typ.)
Operating Temperature range： -40°C to +105°C
Package HTSSOP-B20
W (Typ.) x D (Typ.) x H (Max.) 6.5mm x 6.4mm x 1.00mm
Typical Application Circuit
VDD
VOUT2
VDDP VDDP VDDP HS2L LX2 GNDP VOUT2 DIS2 GNDA INV2
(TOP VIEW)
BD81870 (HTSSOP-B20)
LX1 DIS1 NON1 VREF N.C. HSWON SEQON STB1 STB2 VDDA
HTSSOP-B20
VOUT1
VDD
Figure 1. Application Circuit
Product structure : Silicon monolithic integrated circuit
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