UPD1001 datasheet(10/42 Pages) MICROCHIP

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UPD1001

DS00001759B-page 10

 2014 Microchip Technology Inc.

2.2

Pin Descriptions

TABLE 2-2:

PIN DESCRIPTIONS

Name

Symbol

Buffer

Type

Description

Power Delivery

Power Deliv-

ery Cable ID

PD_ID

AIO

USB connector signal used to indicate a high-current

power delivery capable cable is inserted. This signal is to

be connected to the PD_ID pin located on the USB PD

Standard-B receptacle.

Power Deliv-

ery VBUS Data

PD_DATA

AIO

Modulated power delivery VBUS data. Requires in-line

isolation filter. Reference schematic available on request.

Power Deliv-

ery Detect

PD_DETECT

(PU)

This signal is to be connected to the PD DETECT pins

located on the USB PD Standard-A receptacle. This sig-

nal is pulled high via an internal pull-up resistor by

default. Assertion (low value) of PD_DETECT qualifies a

USB-PD plug detection event.

Note:

This function is only available in specific

device configurations.

Power

Delivery

Enable

PD_EN_N

This active low signal controls output of the power supply

voltage onto VBUS. This signal will typically always be

asserted, even when VBUS is 5 V.

Miscellaneous

VBUS Voltage

Monitor

VMON

Stepped down voltage representation of the VBUS volt-

age. This signal must be connected to a voltage divider

circuit as specified in Section 2.4, "Power Connection

Diagram," on page 18. Voltage must not exceed 5 V on

this signal. Refer to Section 3.4, "Voltage/Current Moni-

tors (VMON/IMON)," on page 25 for additional informa-

tion.

Charger Cur-

rent Monitor

IMON

Voltage representation of the charger current. This signal

should be fed by a current sense amplifier tuned to output

3.0 V when 6.0 A is flowing on VBUS. Voltage must not

exceed 5 V on this signal. Refer to Section 3.4, "Voltage/

Current Monitors (VMON/IMON)," on page 25 for addi-

tional information.

Power Supply

Fault Indicator

FAULT_N

OD8

This active low signal can be connected to an external

LED or SoC and is used by the device to indicate power

supply exceptions/failures as determined by the inte-

grated voltage/current monitors. Refer to Section 3.4,

"Voltage/Current Monitors (VMON/IMON)," on page 25

for additional information.

Power Deliv-

ery Profile

Configuration

Selector 0

CFG_SEL0

AIO

This pin is used in conjunction with CFG_SEL1 to select

the power delivery profile of the device via an externally

connected RC circuit. Refer to Section 3.3, "Configuration

Selection (CFG_SEL0/CFG_SEL1)" for additional infor-

mation.

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