Preliminary Technical Data

ADP2102

Rev. PrA | Page 4 of 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

Figure 3.Pin Configuration

Table 4. Pin Function Descriptions

Pin

No.

Mnemonic

Description

1

MODE

Mode Input. To set the ADP2102 to Forced Continuous Conduction Mode (CCM), drive MODE high. To set the

ADP2102 to Power Saving Mode (PSM), drive MODE low.

2

EN

Enable Input. Drive EN high to turn on the ADP2102. Drive EN low to turn it off and reduce the input current to 0.1μA.

This pin cannot be left floating.

3

FB/OUT

Output Sense Input or Feedback Input. For fixed output versions, OUT is the top of the internal resistive voltage

divider. Connect OUT to the Output Voltage. For adjustable (non-suffix) versions, FB is the input to the error amplifier.

Drive FB through a resistive voltage divider to set the output voltage. The FB regulation threshold is 0.8V.

4

AGND

Analog Ground. Connect AGND to PGND at a single point as close as to the ADP2102 as possible.

5

PGND

Power Ground.

6

LX

Switch Output. LX is the drain of the p-channel MOSFET switch and n-channel Synchronous rectifier. Connect the

output LC filter between LX and output voltage.

7

PVIN

Power Source Input. Drive PVIN with a 2.7V to 5.5V power source.

8

AVIN

Power Source Input. AVIN is the supply for the ADP2102 internal circuitry. For noise reduction, place an external RC

filter between PVIN and AVIN.