Datasheet > NN31001A

NN31001A

更新时间： 2024-11-06 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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数据手册

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NN31001A 数据手册

Doc No. TA4-EA-06262

Revision. 2

Product Standards

NN31001A

http://www.semicon.panasonic.co.jp/en/

7 A Synchronous DC-DC Step down Regulator,

Power Supply in Package

(V_IN= 4.5 V to 28 V, V_OUT= 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

100k

VIN

PVIN

AVIN

PGOOD

PRTCNT

BST

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

V_OUT= 1.0V

VFB

VOUTM

#1.0V / 3.3V

1.5k

without using FB resistor

VOUT

PGND

4.7nF

22µF x 3

0.01

0.1

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, V_OUTSetting = 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

12 3 4 5 6 7...36

中文翻译

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