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UMK325AB7106MM-T

更新时间： 2024-11-05 01:26:23
品牌 Logo 应用领域
松下 - PANASONIC /
页数 文件大小 规格书
36页 1306K
描述
7 A Synchronous DC-DC Step down Regulator,

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Doc No. TA4-EA-06262  
Revision. 2  
NN31001A  
http://www.semicon.panasonic.co.jp/en/  
7 A Synchronous DC-DC Step down Regulator,  
Power Supply in Package  
(VIN = 4.5 V to 28 V, VOUT = 0.6 V to 5.5 V)  
FEATURES  
DESCRIPTION  
High-Speed Response DC-DC Step Down Regulator Circuit NN31001A is a synchronous DC-DC step down  
regulator (1-ch), Power Supply in Package (PSiP), which  
integrates a Controller IC that employs a hysteretic  
control system, two Power MOSFETs, an Inductor and  
Capacitors into a single 8.5 x 7.5 x 4.7mm QFN package.  
that employs Hysteretic Control System  
Built-in inductor and capacitors  
Skip (discontinuous) Mode for high efficiency at light load  
Maximum Output Current : 7 A  
The easiness of mounting PSiP onto a Printed Circuit  
Board (PCB), a very small footprint and a highly reduced  
number of external components, offers very compact  
and simplified solutions for applications requiring point-  
of-load design.  
Input Voltage Range : PVIN=AVIN = 4.5 V to 28 V,  
Output Voltage Range : 0.6 V to 5.5 V  
Selectable Switching Frequency 400 kHz / 600 kHz / 800kHz  
Built-in Feed Back Resistors for 1.0 V / 3.3 V default settings  
Configurable output voltage settings using external Resistors  
Adjustable Soft Start  
The number of external components have been reduced  
to only input/output capacitor, slow start capacitor and  
feedback resistors.  
Low Operating and Standby Quiescent Current  
Furthermore, for applications requiring an output voltage  
of 1.0 V / 3.3 V, the external feedback resistors can be  
eliminated, resulting into even a smaller footprint.  
Open Drain Power Good Indication for Output Over / Under  
Voltage  
Selectable Auto recovery / latch off protection system  
Adjustable current limit threshold  
The PSiP achieves efficiencies of greater than 94% with  
very good power dissipation capabilities.  
Built-in Under Voltage Lockout (UVLO),  
Thermal Shut Down (TSD), Under Voltage Detection (UVD),  
Over Voltage Detection (OVD), Short Circuit Protection (SCP)  
Over Current Protection (OCP)  
APPLICATIONS  
High Current Distributed Power Systems such as  
・DSP and FPGA Point-of-Load Applications  
・Routers  
Plastic Quad Flat Non-leaded Package Heat Slug Down  
(QFN Type, Size : 8.5 mm 7.5 mm, 0.5 mm pitch)  
・Industrial Equipment  
・Space constrained Applications etc.  
100  
SIMPLIFIED APPLICATION  
VREG  
90  
80  
70  
60  
50  
40  
100k  
VIN  
EN  
PVIN  
AVIN  
PGOOD  
PRTCNT  
BST  
LX  
OCPCNT  
VREG  
MODE  
NN31001A  
AGND1, 2  
1k  
VOUT=1V, Fsw=400kHz  
VOUT=1V, Fsw=600kHz  
VOUT=1V, Fsw=800kHz  
VOUT=3.3V, Fsw=600kHz  
VOUT=3.3V, Fsw=800kHz  
FSEL  
VOUT = 1.0V  
VFB  
VOUTM  
#1.0V / 3.3V  
1.5k  
without using FB resistor  
VOUT  
PGND  
SS  
4.7nF  
22µF x 3  
0.01  
0.1  
1
7
10  
IOUT [A]  
Note : The application circuit is an example. The operation of  
the mass production set is not guaranteed. Sufficient  
evaluation and verification is required in the design of  
the mass production set. The Customer is fully  
responsible for the incorporation of the above  
illustrated application circuit in the design of the  
equipment.  
Condition :  
Vin = 12 V, VOUT Setting = 1.0 V / 3.3 V  
Switching Frequency = 400 / 600 / 800 kHz, Skip mode  
Co = 66 µF ( 22 µF x 3 )  
Page 1 of 33  
Established : 2014-07-03  
Revised  
: 2014-07-08  
1234567...36

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