TPS71H48 datasheet(21/46 Pages) TI1

21 / 46 page

TPS71H01Q, TPS71H33Q, TPS71H48Q, TPS71H50Q

LOW DROPOUT VOLTAGE REGULATORS

SLVS152B − NOVEMBER 1996 − REVISED AUGUST 2002

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 38

0.1

100 150 200 250 300

TYPICAL REGIONS OF STABILITY†

COMPENSATION SERIES RESISTANCE

OUTPUT CURRENT

350 400 450 500

100

IO − Output Current − mA

Region of Instability

VI = VO(nom) + 1 V

No Input Capacitance

CO = 10 µF

No Ceramic Capacitance

TA = 25°C

Figure 39

0.1

100 150 200 250 300

TYPICAL REGIONS OF STABILITY†

COMPENSATION SERIES RESISTANCE

OUTPUT CURRENT

350 400 450 500

100

IO − Output Current − mA

Region of Instability

VI = VO(nom) + 1 V

No Input Capacitance

CO = 10 µF + 0.5 µF of

Added Ceramic Capacitance

TA = 25°C

Figure 40

0.1

0.2

0.3

0.4

0.5

0.6

TYPICAL REGIONS OF STABILITY†

COMPENSATION SERIES RESISTANCE

ADDED CERAMIC CAPACITANCE

0.7

0.8

0.9

100

Ceramic Capacitance −

µF

Region of Instability

VI = VO(nom) + 1 V

No Input Capacitance

CO = 10 µF

IO = 100 mA

TA = 25°C

Figure 41

0.1

0.2

0.3

0.4

0.5

0.6

TYPICAL REGIONS OF STABILITY†

COMPENSATION SERIES RESISTANCE

ADDED CERAMIC CAPACITANCE

0.7

0.8

0.9

100

Ceramic Capacitance −

µF

Region of Instability

VI = VO(nom) + 1 V

No Input Capacitance

CO = 10 µF

IO = 500 mA

TA = 25°C

† CSR values below 0.1

Ω are not recommended.

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