Datasheet
2.7V to 5.5V Input, 4A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9A400MUV
General Description
Key Specifications
BD9A400MUV is
a
synchronous buck switching
Input Voltage Range:
2.7V to 5.5V
0.8V to VPVIN×0.7V
4A(Max)
regulator with built-in low on-resistance power MOSFETs.
It is capable of providing current up to 4A.The SLLMTM
control provides excellent efficiency characteristics in
light-load conditions which make the product ideal for
equipment and devices that demand minimal standby
power consumption. The oscillating frequency is high at
1MHz using a small value of inductance. It is a current
mode control DC/DC converter and features high-speed
transient response. Phase compensation can also be set
easily.
Output Voltage Range:
Average Output Current:
Switching Frequency:
High-Side MOSFET On-Resistance: 60mΩ (Typ)
Low-Side MOSFET On-Resistance: 60mΩ (Typ)
1MHz(Typ)
Standby Current:
0μA (Typ)
Package
VQFN016V3030
W(Typ) x D(Typ) x H(Max)
3.00mm x 3.00mm x 1.00mm
Features
Synchronous Single DC/DC Converter.
SLLMTM (Simple Light Load Mode) Control.
Over Current Protection.
Short Circuit Protection.
Thermal Shutdown Protection.
Under Voltage Lockout Protection.
Adjustable Soft start Function.
Power Good Output.
VQFN016V3030 Package (Backside Heat
Dissipation)
VQFN016V3030
Applications
Step-Down Power Supply for DSPs,
FPGAs, Microprocessors, etc.
Laptop PCs/ Tablet PCs/ Servers.
LCD TVs.
Storage Devices (HDDs/SSDs).
Printers, OA Equipment.
Entertainment Devices.
Distributed Power Supply, Secondary Power
Supply.
Typical Application Circuit
BD9A400MUV
PGD
VIN
PVIN
PGD
AVIN
BOOT
MODE
Enable
MODE
0.1µF
1.5µH
10µF
0.1µF
VOUT
SW
FB
EN
SS
ITH
22µF×2
R1
R2
PGND
AGND
RITH
CITH
CSS
Figure 1. Application Circuit
〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AJ00730-1-2
20.Jul.2017 Rev.002
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