UCS2113 datasheet(6/62 Pages) MICROCHIP

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UCS2113

DS20005680B-page 6

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Second Thermal Shutdown

Stage Threshold

TTSD_HIGH

—

135

—

°C

Die Temperature at which both

power switches will open

Second Thermal Shutdown

Stage Hysteresis

TTSD_HIGH_HYST

—

°C

Hysteresis for TTSD_HIGH

functionality. Temperature must

drop by this value before any of

the power switches can be

closed.

Auto-Recovery Test Current

ITEST

—

190

—

Portable device attached,

VBUS= 0 V, Die temp < TTSD

Auto-Recovery Test Voltage

VTEST

—

750

—

Portable device attached,

VBUS = 0 V before application,

Die temp < TTSD

Programmable, 250 - 1000 mV,

default listed

Discharge Impedance

RDISCHARGE

—100

—



Port Power Switch - AC Parameters

Turn-On Delay

tON_PSW

—

0.9

—

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 µF

Turn-Off Time

tOFF_PSW_ERR

—

Over-current Error, VBUS Min

Error, or Discharge Error to

switch off

CBUS = 120 µF

Turn-Off Time

tOFF_PSW_ERR1

—

100

—

TSD or Back-drive Error to

switch off

CBUS = 120 µF

VBUS Output Rise Time

tR_BUS

—

1.1

—

Measured from 10% to 90% of

VBUS, CLOAD = 220 µF

ILIM = 1.0A

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

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V,

VPULLUP = 3V to 5.5V, TA = -40°C to 105°C. All typical values at VDD = VS = 5V, TA = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1:

This parameter is characterized, not 100% tested.

This parameter is ensured by design and not 100% tested.

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above

ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM  1.6A).

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