TPS2010A, TPS2011A, TPS2012A, TPS2013A

POWER-DISTRIBUTION SWITCHES

SLVS189A – DECEMBER 1998 – REVISED NOVEMBER 1999

17

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Figure 34

2

–50

0

50

100

2.4

UNDERVOLTAGE LOCKOUT

2.5

150

TJ – Temperature – °C

2.3

2.2

Start Threshold

Stop Threshold

2.1

APPLICATION INFORMATION

IN

EN

GND

0.1

µF

2,3

4

5,6,7,8

0.1

µF

22

µF

Load

1

OUT

TPS2013A

Power Supply

2.7 V to 5.5 V

Figure 35. Typical Application

power-supply considerations

A 0.01-

µF to 0.1-µF ceramic bypass capacitor between IN and GND, close to the device, is recommended.

Placing a high-value electrolytic capacitor on the output and input pins is recommended when the output load

is heavy. This precaution reduces power supply transients that may cause ringing on the input. Additionally,

bypassing the output with a 0.01-

µF to 0.1-µF ceramic capacitor improves the immunity of the device to

short-circuit transients.

overcurrent

A sense FET checks for overcurrent conditions. Unlike current-sense resistors, sense FETs do not increase the

series resistance of the current path. When an overcurrent condition is detected, the device maintains a

constant output current and reduces the output voltage accordingly. Complete shutdown occurs only if the fault

is present long enough to activate thermal limiting.