BD81870EFV-M Datasheet, PDF (1/36 Pages) Rohm – Step-up / Inverted 2ch Switching Regulator

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℃ to +105℃
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
〇Product structure : Silicon monolithic integrated circuit
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© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0313AAF00650-1-2
29.July.2016 Rev.001