ADP3207

Rev. 1 | Page 9 of 29 | www.onsemi.com

Pin No.

Mnemonic

Description

21 to 23

SW3 to SW1

Current Balance Inputs. Inputs for measuring the current level in each phase. The SW pins of unused phases

should be left open.

24 to 26

PWM3 to

PWM1

Logic-Level PWM Outputs. Each output is connected to the input of an external MOSFET driver such as the

ADP3419. Connecting the PWM2 and/or PWM3 outputs to VCC causes that phase to turn off, allowing the

ADP3207 to operate as a 1-, 2-, or 3-phase controller.

27

OD

Multiphase Output Disable Logic Output. This pin is actively pulled low when the ADP3207 enters single-phase mode

or during shutdown. Connect this pin to the SD inputs of the Phase-2 and Phase-3 MOSFET drivers.

28

DCM

Discontinuous Current Mode Enable Output. This pin is actively pulled low when the single-phase inductor

current crosses zero.

29

VRTT

Voltage Regulator Thermal Throttling Logic Output. This pin goes high if the temperature at the monitoring point

connected to TTSENSE exceeds the programmed VRTT temperature threshold.

30

TTSENSE

Thermal Throttling Sense Input and OVP Disable. The center point of a resistor divider (where the lower resistor is

an NTC thermistor) between VCC and GND is connected to this pin to remotely sense the temperature at the

desired thermal monitoring point. Grounding TTSENSE disables OVP function.

31

VCC

Supply Voltage for the Device.

32

PSI

Power State Indicator Input. Pulling this pin to GND forces the ADP3207 to operate in single-phase mode.

33

DPRSTP

Deeper Stop Control Input.

34 to 40

VID6 to

VID0

Voltage Identification DAC Inputs. When in normal operation mode, the DAC output programs the FB regulation

voltage from 0.3 V to 1.5 V (see Table 6).