ADP3020 Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

ADP3020

High-Efficiency Notebook Computer Power Supply Controller

Analog Devices 

ADP3020

Pin No.

31

32

Mnemonic

INTVCC

AUXVCC

33

SD

34

PGND

35

DRVL5

36

SW5

37

DRVH5

38

BST5

PIN FUNCTION DESCRIPTIONS (Continued)

Function

Linear Regulator Bypass for the internal 5 V LDO. Bypass this pin with a 4.7 µF capacitor to AGND.

Supply Switch Over. When AUXVCC > 4.75 V, and both of the switchers are in Power Saving mode,

the internal 5 V LDO is turned off. The chip is powered by AUXVCC pin. There is a 2% hysteresis for

this pin.

Shutdown Control Input, Active Low. If SD = 0 V, the chip is in shutdown with very low quiescent cur-

rent. For automatic start-up, connect SD to VIN directly.

Power Ground.

Low Side Driver for 5 V Buck Converter.

Switching Node (Inductor) Connection for 5 V Buck Converter.

High Side Gate Driver for 5 V Buck Converter.

Boost Capacitor Connection for High Side Gate Driver of the 5 V Buck Converter.

ABSOLUTE MAXIMUM RATINGS*

VIN to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +27 V

AGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 0.3 V

INTVCC . . . . . . . . . . . . . . . . . . . . . . AGND – 0.3 V to +6 V

BST5, BST3 to PGND . . . . . . . . . . . . . . . . . –0.3 V to +32 V

BST5 to SW5 . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

BST3 to SW3 . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

CS5, CS3 . . . . . . . . . . . . . . . . . . . . . . AGND – 0.3 V to VIN

SW3, SW5 to PGND . . . . . . . . . . . . . . –0.3 V to VIN + 0.3 V

SD . . . . . . . . . . . . . . . . . . . . . . . . . AGND – 0.3 V to +27 V

DRVL5/3 to PGND . . . . . . . . . –0.3 V to (INTVCC + 0.3 V)

DRVH5/3 to SW5/3 . . . . . . . . . –0.3 V to (INTVCC + 0.3 V)

All Other Inputs and Outputs

. . . . . . . . . . . . . . . . . . AGND – 0.3 V to INTVCC + 0.3 V

θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98°C/W

Operating Ambient Temperature Range . . . . –40°C to +85°C

Junction Temperature Range . . . . . . . . . . . . –40°C to +150°C

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C

*This is a stress rating only; operation beyond these limits can cause the device to

be permanently damaged.

PIN CONFIGURATION

CS5 1

38 BST5

FB5 2

37 DRVH5

EAN5 3

36 SW5

EAO5 4

35 DRVL5

ADJ/FX5 5

SS5 6

34 PGND

33 SD

CLSET5 7 ADP3020 32 AUXVCC

REF 8

31 INTVCC

TOP VIEW

AGND 9 (Not to Scale) 30 VIN

CLSET3 10

29 DRVL3

MODE 11

28 SW3

SYNC 12

27 DRVH3

SS3 13

26 BST3

ADJ/FX3 14

EAO3 15

25 DRV2

24 FB2

EAN3 16

23 SD2

FB3 17

22 CPOR

CS3 18

PFI 19

21 PWRGD

20 PFO

Model

ADP3020ARU

ORDERING GUIDE

Temperature Range

–40°C to +85°C

Package Description

Thin Shrink Small Outline

Package Option

RU-38

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although

the ADP3020 features proprietary ESD protection circuitry, permanent damage may occur on

devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are

recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

REV. 0

–5–

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