ADP1051

Preliminary Technical Data

Rev. PrA | Page 10 of 17

Pin No.

Mnemonic

Description

20

AGND

IC Common Analog GND. The internal analog circuitry ground and digital circuitry ground is star connected to

this pin through bonding wires.

21

RES

Resistor Input. This pin sets up the internal reference for internal PLL Frequency. Connect a 10 kΩ resistor

(±0.1%) from RES to AGND. This signal is referred to AGND.

22

ADD

Address Select Input to program I2C/PMBus address. Connect a resistor from ADD to AGND. This signal is

referred to AGND.

23

RTD

Thermistor Input. Place a thermistor 100 kΩ 1% beta = 4250 1% in parallel with a 16.5 kΩ (1%) resistor. This pin

is referenced to AGND. Connect to AGND if not used.

24

OVP

Over Voltage Protection. This signal is used as redundant OVP protection. This signal is referred to VS-.

EP

Exposed Pad. The ADP1051 has an exposed thermal pad on the underside of the package. For increased

reliability of the solder joints and maximum thermal capability, it is recommended that the pad be soldered to

the PCB AGND plane.