STUSBCD01B datasheet(4/19 Pages) STMICROELECTRONICS

4 / 19 page

Pin configuration

STUSBCD01B

4/19

Pin configuration

Figure 2.

Bump configuration (top through view)

Table 2.

Pin description

Bump

name

Symbol

Type

Description

VBAT

PWR

Analog supply voltage input (2.2 V - 4.5 V)

GND

PWR

Ground reference

VIO

PWR

Digital interface supply voltage (1.6 V - 2.8 V)

AI/O

Connected to USB D+ Data line

AI/O

Connected to USB D- Data line

DETECT

Hardware detection pin (open drain). 300 k

Ω internal pull-down resistor. VBAT

referred.

SHUTDOWN

Standby mode selection pin. Active HIGH. Terminates the detection and resets

the device.

/OE

Output enable for DETECT output. Active LOW.

STATUS/

METHOD

AI/O

SW detection output: High when Charger detected. Pulled high or low through

internal weak pull-up to 1V8V and weak pull-down.

Detection method selection input: low for dedicated method, high for current sink

method.

DEFAULT

METHOD

Hardware selection for detection method. Active only if VIO is not present.

Dedicated method is selected if driven low, current sink method if driven high.

VBAT referred. Do not leave floating to avoid increased power consumption.

VBUS

VBUS voltage comparator input. Triggers the charger detection. 6V limited voltage

when 10 V are applied externally.

1V8V

Regulator output voltage. Bypass capacitor not required.

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