4470 データシートの表示（PDF） - Monolithic Power Systems

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4470

High-Efficiency, Fast-Transient, 5A, 36V Synchronous, Step-Down Converter

Monolithic Power Systems 

MP4470/4470A–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER

ORDERING INFORMATION

Part Number*

MP4470GL

MP4470AGL

Package

QFN20 (3×4mm)

QFN20 (3×4mm)

Top Marking

4470

4470A

* For Tape & Reel, add suffix –Z (e.g. MP4470/4470AGL–Z)

PACKAGE REFERENCE

20 19 18 17

1

21

IN

2

3

22

IN

4

5

23

IN

6

16

15

24

SW

14

13

25

SW

12

11

7 8 9 10

QFN20 (3×4mm)

ABSOLUTE MAXIMUM RATINGS (1)

Supply Voltage VIN ....................................... 40V

VSW........................................ -0.3V to VIN + 0.3V

VBST ...................................................... VSW + 6V

VPGOOD ....................................-0.3V to VCC+0.6V

All Other Pins ..................................-0.3V to +6V

Continuous Power Dissipation (TA = +25°C) (2)

………………………………… …………….2.6W

Operating Junction Temperature ..............150°C

Lead Temperature ....................................260°C

Storage Temperature............... -65°C to +150°C

Recommended Operating Conditions (3)

Supply Voltage VIN ...........................4.5V to 36V

Output Voltage VOUT................... 0.8V to 0.9×VIN

Operating Junction Temp. (TJ). -40°C to +125°C

Thermal Resistance (4) θJA θJC

QFN20 (3×4mm) .....................48 ...... 10 ... °C/W

Notes:

1) Exceeding these ratings may damage the device.

2) The maximum allowable power dissipation is a function of the

maximum junction temperature TJ(MAX), the junction-to-

ambient thermal resistance θJA, and the ambient temperature

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-

TA)/θJA. Exceeding the maximum allowable power dissipation

will cause excessive die temperature, and the regulator will go

into thermal shutdown. Internal thermal shutdown circuitry

protects the device from permanent damage.

3) The device is not guaranteed to function outside of its

operating conditions.

4) Measured on JESD51-7, 4-layer PCB.

MP4470/4470A Rev. 1.1

www.MonolithicPower.com

2

8/26/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

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