ADP3152 查看數據表（PDF） - Analog Devices

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ADP3152

5-Bit Programmable Synchronous Switching Regulator Controller for Pentium® II Processor

Analog Devices 

ADP3152

Pin

1–4, 16

5

6

7

8

9

10

11

12

13

14

15

Mnemonic

VID1–VID4, VD0

AGND

SD

SENSE–

SENSE+

CT

CMP

PWRGD

VCC

DRIVE2

DRIVE1

PGND

PIN FUNCTION DESCRIPTIONS

Function

Voltage Identification DAC Input Pins. These pins are internally pulled up to VREG providing a

logic one if left open. Leaving all five DAC inputs open results in placing the ADP3152 into

shutdown.

Analog Ground Pin. This pin must be routed separately to the (–) terminal of COUT.

Shutdown Pin. A logic high will place the ADP3152 in shutdown and disable the output. This

pin is internally pulled down.

Connects to the internal resistor divider which, along with the VID code, sets the output volt-

age. Pin 7 is also the (–) input for the current comparator.

The (+) input for the current comparator. A threshold between Pins 8 and 7 set by the error

amplifier in conjunction with RSENSE, sets the current trip point.

External Capacitor CT from Pin 9 to ground sets the off time of the device.

Error Amplifier Compensation Point. The current comparator threshold increases with the Pin

10 voltage.

Power Good Pin. An open drain signal to indicate that the output voltage is within a ± 5% regu-

lation band.

Input Voltage Pin.

Gate Drive for the bottom synchronous N-channel MOSFET. The voltage at Pin 13 swings

from ground to VCC.

Gate Drive for the top primary N-channel MOSFET. The voltage at Pin 14 swings from ground

to VCC.

Driver Power Ground. Connects to the source of the bottom N-channel MOSFET and to the

(–) terminal of CIN.

ABSOLUTE MAXIMUM RATINGS*

Input Supply Voltage (Pin 12) . . . . . . . . . . . . –0.3 V to +16 V

VID0–VID4, SD, PWRGD, CMP, CT . . . . . . . –0.3 V to VCC

DRIVE1, DRIVE2, SENSE+, SENSE– . . . . . . –0.3 V to VCC

Operating Temperature Range . . . . . . . . . . . . . 0°C to +70°C

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

θJA␣ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110°C/W

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.

ORDERING GUIDE

Model

ADP3152AR

Temperature Package

Range

Description

0°C to +70°C 16-Lead SOIC

Package

Option

R-16A/SO-16

PIN CONFIGURATION

VID1 1

16 VID0

VID2 2

15 PGND

VID3 3

14 DRIVE1

VID4 4 ADP3152 13 DRIVE2

TOP VIEW

AGND 5 (Not to Scale) 12 VCC

SD 6

11 PWRGD

SENSE– 7

10 CMP

SENSE+ 8

9 CT

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 ADP3152 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

–3–

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