V

ENx

V

OUTx

t

D_on

90%

10%

50%

50%

90%

t

D_off

10%

t

r

t

f

TPS65283, TPS65283-1

www.ti.com

SLVSCL3C – JUNE 2014 – REVISED AUGUST 2014

Electrical Characteristics (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

POWER DISTRIBUTION SWITCH

Power switch input voltage range

2.4

6

V

Supply current, device enabled

No load on SW_OUT, RSET = 20 k

Ω

140

µA

2.15

2.25

2.35

V

Power switch input undervoltage lockout

2.05

2.15

2.25

V

Hysteresis

100

mV

60

m

Ω

Power switch NMOS on-resistance

60

m

Ω

Turn-on delay time

1.1

ms

Turn-off delay time

(See Figure 1)

1.2

ms

Output rise time

0.65

ms

Output fall time

1.54

ms

1.575

1.75

1.925

Current limit threshold (maximum DC current

delivered to load) and short circuit current,

1.125

1.25

1.375

A

OUT connect to ground

0.4

0.5

0.6

Fault assertion or deassertion due to overcurrent

Switch overcurrent fault deglitch

6

8

10

ms

condition

nFAULT pin output low voltage

150

300

mV

SW_EN high-level input voltage

2

V

SW_EN low-level input voltage

0.4

V

100

Ω

THERMAL SHUTDOWN

Temperature rising

160

Thermal protection trip point

°C

Hysteresis

20

Temperature rise

145

Power switch thermal protection trip point

°C

Power switch in overcurrent condition

Hysteresis

20

(2)

The discharge function is active when the device is disabled (when enable is deasserted). The discharge function offers a resistive

discharge path for the external storage capacitor.

Figure 1. Power Switches Test Circuit and Voltage Waveforms

Copyright © 2014, Texas Instruments Incorporated

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