6

TUSB321

SLLSEO6C – JUNE 2015 – REVISED AUGUST 2018

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Electrical Characteristics (continued)

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Rp_cm_med

External pull-up resistor on CURRENT_MODE pin to

advertise 1.5-A current

500

kΩ

Rp_cm_high

External pull-up resistor on CURRENT_MODE pin to

advertise 3.0-A current

10

kΩ

VBUS_DET IO Pins (Connected to System VBUS signal through external resistor)

VBUS_THR

VBUS threshold range

2.95

3.30

3.80

V

RVBUS

External resistor between VBUS and VBUS_DET pin

855

887

920

KΩ

RVBUS_PD

Internal pulldown resistance for VBUS_DET

95

KΩ

DIR pin (Open Drain IO)

VOL

Low-level signal output voltage

IOL = –1.6 mA

0.4

V

VCONN

RON

On resistance of the VCONN power FET

1.25

Ω

VTOL

Voltage tolerance on VCONN power FET

5.5

V

VPASS

Voltage to pass through VCONN power FET

5.5

V

IVCONN

VCONN current limit; VCONN is disconnected above this

value

200

mA

CBULK

Bulk capacitance on VCONN; placed on VDD supply

10

200

µF

6.6 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

MIN

TYP

MAX

UNIT

tCCCB_DEFAULT

Power on default of CC1 and CC2 voltage debounce time

133

ms

tVBUS_DB

Debounce of VBUS_DET pin after valid VBUS_THR (See Figure 1.)

2

ms

tDRP_DUTY_CYCLE

Power-on default of percentage of time DRP advertises DFP during a TDRP

30%

tDRP

The period TUSB321 in DFP mode completes a DFP to UFP and back

advertisement.

50

75

100

ms

tFAULT

VCONN_FAULT asserted low time after VCONN over-current condition is

detected. (See Figure 2.)

7

10

13

µs