Nano Pulse ControlTM
Datasheet
2.7 V to 5.5 V Input, 4 A
Single Synchronous Buck DC/DC Converter
for Automotive
BD9S402MUF-C
General Description
Key Specifications
◼ Input Voltage:
BD9S402MUF-C is a synchronous buck DC/DC converter
with built-in low ON resistor power MOSFETs. It can
provide current up to 4 A. Small inductor is applicable due
to high switching frequency of 2.2 MHz. It has fast transient
response performance due to current mode control. It has
a built-in phase compensation circuit. Applications can be
created with a few external components.
2.7 V to 5.5 V
0.6 V to VPVIN x 0.75 V
4 A (Max)
◼ Output Voltage Setting:
◼ Output Current:
◼ Switching Frequency:
◼ High Side FET ON Resistance:
◼ Low Side FET ON Resistance:
◼ Shutdown Circuit Current:
◼ Operating Temperature:
2.2 MHz (Typ)
60 mΩ (Typ)
35 mΩ (Typ)
0 μA (Typ)
-40 °C to +125 °C
Features
QuiCurTM
Package
W (Typ) x D (Typ) x H (Max)
3.0 mm x 3.0 mm x 1.0 mm
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Nano Pulse ControlTM
VQFN16FV3030
AEC-Q100 Qualified(Note 1)
Functional Safety Supportive Automotive Products
Single Synchronous Buck DC/DC Converter
Adjustable Soft Start Function
Output Discharge Function
Power Good Output
Under Voltage Lockout Protection (UVLO)
Short Circuit Protection (SCP)
Output Over Voltage Protection (OVP)
Over Current Protection (OCP)
Thermal Shutdown Protection (TSD)
Wettable Flank QFN Package
Enlarged View
(Note 1) Grade 1
VQFN16FV3030
Wettable Flank Package
Applications
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Automotive Equipment
Other Electronic Equipment
Typical Application Circuit
VIN
PVIN
PGD
SW
AVIN
GAIN
VGAIN
VEN
CIN1
CIN2
VOUT
EN
SS
L1
COUT
R1
R2
PGND
AGND
FB
C3
QuiCurTM, Nano Pulse ControlTM is a trademark or a registered trademark of ROHM Co., Ltd.
〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays
www.rohm.com
© 2020 ROHM Co., Ltd. All rights reserved.
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