NN30195A
VIN = 4.5 V to 5.6 V, 6 A
Synchronous DC-DC Step down Regulator
comprising of Controller IC and Power MOSFET
FEATURES
DESCRIPTION
z High-Speed Response DC-DC Step Down Regulator
Circuit that employs Hysteretic Control System
NN30195A 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.
z Two 25 mΩ (Typ.)
MOSFETs for High Efficiency at 6 A
z SKIP (discontinuous) Mode for Light Load Efficiency
z Up to 6 A Output Current
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.
z Input VoltageRange : AVIN : 4.5 V to 5.6 V
PVIN : 2.9 V to 5.6 V
Output Voltage Range : 0.6 V to 3.5 V
Selectable Switching Frequency 500 kHz , 1 MHz , 2
MHz
Maximum current is 6 A.
z Adjustable Soft Start
z Low Operating and Standby Quiescent Current
APPLICATIONS
z Open Drain Power Good Indication for Output Over ,
Under Voltage
High Current Distributed Power Systems such as
・HDDs (Hard Disk Drives)
・SSDs (Solid State Drives)
・PCs
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)
・Game consoles
・Servers
・Security Cameras
・Network TVs
z HQFN024-A3-0404A ( Size : 4 mm X 4 mm, 0.5 mm
pitch ), 24pin Plastic Quad Flat Non-leaded Package
Heat Slug Down (QFN Type)
・Home Appliances
・OA Equipment etc.
SIMPLIFIED APPLICATION
EFFICIENCY CURVE
VREG
Frequency = 500 kHz
100
90
PVIN
CTL1
CTL2
PVIN
80
100k Ω
22μF
PGOOD
BST
70
VOUT
AVIN
60
50
40
30
20
10
0
FCCM/ Vo= 1.0V
FCCM/ Vo= 1.2V
FCCM/ Vo= 1.8V
FCCM/ Vo= 3.3V
SKIP/ Vo= 1.0V
SKIP/ Vo= 1.2V
SKIP/ Vo= 1.8V
SKIP/ Vo= 3.3V
AVIN
10μF
0.1μF
1μH
NN30195A
2k Ω
DCDCOUT 1.8V
LX
VFB
22μF x 2
1k Ω
VREG
1μF 10nF
SS
AGND PGND
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 )
VIN = 5.0 V, Vout = 1.0 V , 1.2 V , 1.8 V , 3.3 V,
Lo = 1 µH, Co = 44 µF (22 µF x 2), Frequency = 500 kHz
Ver. CEB
Publication date: October 2012
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