UCS1001 datasheet(19/59 Pages) MICROCHIP

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USB Port Power Controller with Charger Emulation

Datasheet

SMSC UCS1001

Revision 1.2 (05-21-12)

DATASHEET

Port Power Switch - AC Parameters

Turn On Delay

tON_PSW

0.75

PWR_EN active toggle to

switch on time, VBUS

discharge not active

Turn Off Time

tOFF_PSW_INA

0.75

PWR_EN inactive toggle to

switch off time

CBUS = 120 F

Turn Off Time

tOFF_PSW_ERR

Over-current Error, VBUS Min

Error, or Discharge Error to

switch off

CBUS = 120 F

Turn Off Time

tOFF_PSW_ERR

100

TSD or Back-drive Error to

switch off

CBUS = 120 F

VBUS Output Rise Time

tR_BUS

1.1

Measured from 10% to 90% of

VBUS, CLOAD = 220 F

ILIM = 1.0 A

Soft Turn on Rate

IBUS / t

100

mA /

µs

Temperature Update

Time

tDC_TEMP

200

Short Circuit Response

Time

tSHORT_LIM

1.5

µs

Time from detection of short to

current limit applied.

No CBUS applied

Short Circuit Detection

Time

tSHORT

Time from detection of short to

port power switch disconnect

and ALERT# pin assertion.

Latched Mode Cycle

Time

tUL

From PWR_EN edge transition

from inactive to active to begin

error recovery

Auto-recovery Mode

Cycle Time

tCYCLE

Time delay before error

condition check

Auto-recovery Delay

tRST

Portable device attached,

VBUS must be > VTEST after

this time

Discharge Time

tDISCHARGE

200

Amount of time discharge

resistor applied

Table 3.3 Electrical Specifications (continued)

VDD = 4.5 V to 5.5 V, VS = 2.9 V to 5.5 V, VPULLUP = 3V to 5.5V, TA = -40 °C to 85 °C

all Typical values at VDD = VS = 5 V, TA = 27 °C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNIT

CONDITIONS

UCS1001 Datasheet(PDF) 19 Page - Microchip Technology

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