LEO3910 datasheet(11/21 Pages) STMICROELECTRONICS

номер детали	LEO3910

подробное описание детали	Rad-hard plastic 2 A positive low drop voltage regulator

PDF	21 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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Figure 16. Dropout voltage vs. temperature (VOUT=3 V,

IOUT=2 A)

Figure 17. SVR vs. frequency

Vout = 3V, Cin = 0 .

1 μF, Cout =1μF(tantalum),Iout=2 A

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

-60

-40

-20

100

120

140

Temperature [ °C]

Figure 18. Output noise spectrum (VOUT=Vadj,

COUT=1 μF)

VIN = 3.5V,

Cin = 220μF, Cout =1μF(tantalum)

Vout=VADJ,

0.0

50.0

100.0

150.0

200.0

250.0

300.0

350.0

400.0

100

1000

10000

100000

1000000

Frequency [Hz]

Iout=2A

Iout=5mA

Figure 19. Short-circuit current vs. dropout voltage,

(VOUT=Vadj)

CIN=

Cout =1μF(tantalum), T=25°C, No RSH

0.1μF,

0.5

1.5

2.5

3.5

4.5

VDrop [V]

T=25

T=-55

T=125

Figure 20. Short-circuit current vs. RSH

CIN=

Cout =1μF(tantalum)

0.1μF,

0.5

1.5

2.5

3.5

100

150

200

250

300

RSH [Kohm]

Vout=Vadj

Figure 21. Stability plan

VIN from 3 to 12V; IOUT from 5mA to 2A; VOUT = VADJ; CIN=1 µF; T= 25 ° C

0.001

0.01

0.1

100

COUT[µF] (nominal value)

STABILITY AREA

LEO3910

Application information

DS13691 - Rev 2

page 11/21

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