ADP3152 datasheet(3/12 Pages) AD

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ADP3152

–3–

REV. 0

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

PIN FUNCTION DESCRIPTIONS

Mnemonic

Function

1–4, 16

VID1–VID4, VD0

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.

AGND

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.

SENSE–

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.

SENSE+

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.

9CT

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

CMP

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

10 voltage.

PWRGD

Power Good Pin. An open drain signal to indicate that the output voltage is within a

±5% regu-

lation band.

VCC

Input Voltage Pin.

DRIVE2

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

from ground to VCC.

DRIVE1

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

to VCC.

PGND

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

(–) terminal of CIN.

PIN CONFIGURATION

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

Temperature Package

Package

Model

Range

Description

Option

ADP3152AR

°C to +70°C 16-Lead SOIC R-16A/SO-16

TOP VIEW

(Not to Scale)

VID1

VID2

VID3

VID4

AGND

SENSE–

SENSE+

VID0

PGND

DRIVE1

DRIVE2

VCC

PWRGD

CMP

ADP3152

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