TSU6721 datasheet(7/45 Pages) TI2

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TSU6721YFF

www.ti.com

SCDS345 – JUNE 2013

VOLTAGE PROTECTION

TA = –40°C to 85°C, Typical values are at TA = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VVBUS_UVLO

VBUS under voltage+

Voltage is Rising, device power-up

3.0

3.25

3.6

VBUS under voltage–

Voltage is Falling, device reset

2.7

3.3

VVBUS_VALID

VBUS interrupt threshold

Voltage is Rising

3.6

VVBAT_UVLO

VBAT under voltage+

Voltage is Rising, device power-up

2.5

2.8

3.1

VBAT under voltage–

Voltage is Falling, device reset

2.3

2.6

2.9

LOAD SWITCH CHARACTERISTICS

TA = –40°C to 85°C, Typical values are at TA = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RDS-

VBUS switch resistance

VBUS = 5 V, IOUT = 100 mA

150

Ω

VBUSSWITCH

tONa

Turn-ON time automatic mode

RL = 36

Ω, CL = 400 pF, Vbus rising > 3.6V

175

tOFFa

Turn-OFF time automatic mode

RL = 36

Ω, CL = 400 pF, Vbus falling < 3.6V

2.5

RL = 36

Ω, CL = 400 pF, From receipt of I2C ACK

tONm

Turn-ON time manual mode

230

µs

bit

RL = 36

Ω, CL = 400 pF, From receipt of I2C ACK

tOFFm

Turn-OFF time manual mode

180

µs

bit

I2C reg0x22h, Bit [2:0] = 000

0.8

1.0

1.2

I2C reg0x22h, Bit [2:0] = 001 (default)

1.3

1.5

1.7

Programmable overcurrent

IOCP

VBUS = 5.5V

protection

I2C reg0x22h, Bit [2:0] = 010

2.0

I2C reg0x22h, Bit [2:0] = 011

2.0

I2C reg0x21h, Bit [7:5] = 000

1.25

1.5

1.75

I2C reg0x21h, Bit [7:5] = 001 (default)

1.67

2.0

2.33

IOCL

Programmable overcurrent limiter

VBUS = 5.5V

I2C reg0x21h, Bit [7:5] = 010

2.5

I2C reg0x21h, Bit [7:5] = 011

2.5

VBUS OVERVOLTAGE PROTECTION (OVP)

VBUS

Input overvoltage protection

VBUS increasing from 6 V to 8 V

6.8

7.2

threshold

VOVP

VBUS

OVP delay

Delay from VBUS > VOVP to Load switch OFF

200

µs

tOFF(OVP)

VBUS

Hysteresis on OVP

VBUS decreasing from 8 V to 6 V

140

VHYS-OVP

VBUS

Recovery time from input

Delay from VBUS < VOVP-VHYS, to Load switch ON

overvoltage condition

tON(OVP)

OTP

OTP Rising Turn Off

Temperature rising until load switch shut off

130

°C

rOTP

OTP

Temperature falling after OTP shutoff until switch

OTP Falling Turn On

120

°C

turn on

fOTP

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