NN30310AA Datasheet, PDF (1/27 Pages) Panasonic Battery Group – Synchronous DC-DC Step down Regulator comprising of Controller IC and Power MOSFET

NN30310AA
VIN = 6 V to 30 V, 3 A
Synchronous DC-DC Step down Regulator
comprising of Controller IC and Power MOSFET
FEATURES
z High-Speed Response DC-DC Step Down Regulator
Circuit that employs Hysteretic Control System
z Two 25 mΩ (Typ.)
MOSFETs for High Efficiency at 3 A
z SKIP (discontinuous) Mode for Light Load Efficiency
z Up to 3 A Output Current
z Input VoltageRange : AVIN : 6 V to 30 V,
PVIN : 6 V to 30 V,
Output Voltage Range : 0.75 V to 5.5 V
Selectable Switching Frequency 250 kHz , 750 kHz ,
1250 kHz
z Adjustable Soft Start
z Low Operating and Standby Quiescent Current
z Open Drain Power Good Indication for Output Over ,
Under Voltage
z Built-in Under Voltage Lockout (UVLO),
Thermal Shut Down (TSD),
Over Voltage Detection (OVD),
Under Voltage Detection (UVD),
Over Current Protection (OCP),
Short Circuit Protection (SCP)
z HQFN024-A3-0404 ( Size : 4 mm X 4 mm, 0.5 mm
pitch ), 24pin Plastic Quad Flat Non-leaded Package
Heat Slug Down (QFN Type)
DESCRIPTION
NN30310AA is a synchronous DC-DC Step down
Regulator (1-ch) comprising of a Controller IC and two
power MOSFETs and employs the hysteretic control
system.
By this system, when load current changes suddenly, it
responds at high speed and minimizes the changes of
output voltage.
Since it is possible to use capacitors with small
capacitance and it is unnecessary to add external parts
for system phase compensation, this IC realizes
downsizing of set and reducing in the number of external
parts. Output voltage is adjustable by user.
Maximum current is 3 A.
APPLICATIONS
High Current Distributed Power Systems such as
・HDDs (Hard Disk Drives)
・SSDs (Solid State Drives)
・PCs
・Game consoles
・Servers
・Security Cameras
・Network TVs
・Home Appliances
・OA Equipment etc.
SIMPLIFIED APPLICATION
VREG
100
90
PVIN
EN
PVIN
100k Ω
80
PGOOD
70
VOUT
60
AVIN
BST
50
AVIN _NN30310AA
0.1μF
4.7μH
DCDCOUT
1.05 V
LX
40
30
1.5k Ω
VFB
22μF x 2
20
1k Ω
VREG SS AGND PGND
10
1μF 10nF
0
EFFICIENCY CURVE
Frequency = 250 kHz
FCCM/ Vo= 1.05V
FCCM/ Vo= 1.2V
FCCM/ Vo= 1.8V
FCCM/ Vo= 3.3V
FCCM/ Vo= 5.0V
SKIP/ Vo= 1.05V
SKIP/ Vo= 1.2V
SKIP/ Vo= 1.8V
SKIP/ Vo= 3.3V
SKIP/ Vo= 5.0V
Notes) This application circuit is an example. The operation
of mass production set is not guaranteed. You should
perform enough evaluation and verification on the
design of mass production set. You are fully
responsible for the incorporation of the above
application circuit and information in the design of
your equipment.
IOUT (A)
Condition )
V_IN = 12.5 V, Vout = 1.05 V , 1.2 V , 1.8 V , 3.3 V , 5.0 V,
Lo = 4.7 µH, Co = 44 µF ( 22 µF x 2 ), Frequency = 250 kHz
Publication date: October 2012
1
Ver. CEB