NN30295A Datasheet, PDF (1/27 Pages) Panasonic Battery Group – DC-DC Step down Regulator comprising of Controller IC and Power MOSFET with I2C Interface

NN30295A
VIN = 4.5 V to 5.6 V, 6 A Synchronous
DC-DC Step down Regulator comprising of Controller IC
and Power MOSFET with I²C Interface
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 6 A
z Mode Selection Option via I²C:
(1) Pulse Skip Mode (PSM) with coast mode function
for high light load efficiency
(2) Forced Continuous Conduction Mode (FCCM) for
quick load transient response
z Up to 6 A Output Current
z Input VoltageRange : AVIN : 4.5 V to 5.6 V,
PVIN : 3.1 V to 5.6 V, VDD : 1.7 V to 3.6 V
Output Voltage Range : 0.6 V to 3.5 V
Selectable Switching Frequency 500 kHz to 2 MHz
( 7 steps ) using I²C : Default 1MHz
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)
zHQFN024-A3-0404A ( Size : 4 mm X 4 mm, 0.5 mm
pitch ), 24pin Plastic Quad Flat Non-leaded Package
Heat Slug Down (QFN Type)
SIMPLIFIED APPLICATION
VDD
VREG
PVIN
VDD
PVIN
EN SCL SDA
PGOOD
100k Ω
AVIN
1.5k Ω
1k Ω
VOUT
BST
AVIN ^NN30295A
VFB
LX
SS AGND PGND
0.1μF
1.0μH
DCDCOUT
1.0 V
22μF x 2
10nF
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.
DESCRIPTION
NN30295A 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 6 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.
EFFICIENCY CURVE
100
90
80
70
60
50
40
30
20
10
0
0.001
NNNN3300129955AA EEfffifciiceinecny c5y050K0H0ｚkHz
FCCM_Vout=1.2V
FCCM_Vout=1.8V
FCCM_Vout=3.3V
SKIP_Vout=1.2V
SKIP_Vout=1.8V
SKIP_Vout=3.3V
0.01
0.1
1
10
Load Current[A]
Condition )
V_IN = 5.0 V, Vout = 1.2 V , 1.8 V , 3.3 V,
Lo = 1 µH, Co = 44 µF (22 µF x 2), Frequency = 500 kHz
Publication date: October 2012
1
Ver. BEB