TPS54821 datasheet(8/37 Pages) TI1

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3.3

3.35

3.4

3.45

3.5

-50

-25

100

125

T - Junction Temperature - °C

VIN = 12 V

1.2

1.205

1.21

1.215

1.22

VIN = 12 V

-50

-25

100

125

T - Junction Temperature - °C

1.1

1.125

1.15

1.175

1.2

-50

-25

100

125

T - Junction Temperature - °C

V - Input Voltage - V

T = 125°C

T = 25°C

T = -40°C

EN = 0 V

2.1

2.2

2.3

2.4

2.5

-50

-25

100

125

T - Junction Temperature - °C

400

500

600

700

800

V - Input Voltage - V

T = 125°C

T = 25°C

T = -40°C

TPS54821

SLVSB14

– OCTOBER 2011

www.ti.com

TYPICAL CHARACTERISTICS (continued)

EN PIN UVLO THRESHOLD vs

EN PIN HYSTERESIS CURRENT vs JUNCTION

JUNCTION TEMPERATURE

TEMPERATURE

Figure 5.

Figure 6.

EN PIN PULLUP CURRENT vs JUNCTION TEMPERATURE

SHUTDOWN QUIESCENT CURRENT vs INPUT VOLTAGE

Figure 7.

Figure 8.

VIN NON-SWITCHING OPERATING QUIESCENT CURRENT

SLOW START CHARGE CURRENT vs

INPUT VOLTAGE

JUNCTION TEMPERATURE

Figure 9.

Figure 10.

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