 2020 Microchip Technology Inc.

DS20006433A-page 5

UCS3205

ISEN Pin

Configurable Current Limit

ILIM

1.59

1.71

1.83

A

RILIM = 1.5 k,see calculation in

Section 4.2 “Overcurrent

Detection” for other ILIM values

Current Limit Accuracy

IACCY

—

—

±7

%

See calculation in Section 4.2

“Overcurrent Detection” for ILIM

values (Note 2)

Current Limit Resistor

RILIM

450

—

5000



Port Power Switch

Port Power Switch – DC Parameter

On Resistance

RDS_ON

—30

40

m



VIN = 5V, IOUT = 2A

VOUT Leakage Current

ILEAK_VOUT

——

5

µA

VIN = 22V, current flowing out the

VOUT pin when EN is pulled down,

VOUT = 0V

Back-Voltage Fault

Protection Threshold

VBV_FAULT_ON

20

30

50

mV

VOUT > VIN, VIN > VUVLO

Back-Voltage FRS Active

Threshold

VBV_FAULT_OFF

120

35

mV

VIN > VUVLO, switch turned on when

(VOUT – VIN) < VBV_FAULT_OFF

Back-Drive Current

IBD_1

—0

5

µA

VIN < VUVLO, EN = 0V,

current flowing between VIN and

GND when the VOUT pin is

connected to a 20V supply

(Note 2)

Forward Leakage

IBD_2

—

0

10

µA

DIR = 1, VIN > VUVLO, EN = 0V,

current flowing between VIN and

GND when the VOUT pin is

connected to a 20V supply (Note 2)

Thermal Shutdown

Threshold

TTSD

—

145

—

°C

Die temperature at which the power

switch will turn off

Thermal Shutdown

Hysteresis

TTSD_HYST

—

20

—

°C

After shutdown, due to TTSD being

reached, die temperature drop

required before the power switch

can be turned on again

Discharge Thermal

Shutdown Threshold

TDSC_TSD

—

165

—

°C

Die temperature at which the

discharge switch will turn off

Discharge Current

IDISCHG

—150

—

mA

Slew Rate

SR

—

20

—

V/ms

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, TA = +25°C, VIN or VOUT = 2.85V to 22V.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1: This parameter is characterized, not 100% tested.

2: This parameter is ensured by design.