LDLN050 datasheet(10/22 Pages) STMICROELECTRONICS

10 / 22 page

Figure 18. UVLO thresholds vs. temperature

1.00

1.20

1.40

1.60

1.80

2.00

2.20

2.40

2.60

2.80

3.00

-50

-25

100

125

150

Temperature [ºC]

VIN = 0 V to 3.8 V, IOUT = 1 mA, VOUT = 3.3 V

Figure 19. Enable pin current vs. temperature

0.00

0.01

0.02

0.03

0.04

0.05

-50

-25

100

125

150

Temperature [ºC]

VIN = VEN = 6.5 V

Figure 20. PSRR vs. Frequency (no CNR)

100

0.01

0.10

1.00

10.00

100.00

1000.00

10000.00

Frequency [kHz]

ILOAD = 0A

ILOAD = 1mA

ILOAD = 10mA

ILOAD = 100mA

VIN = 4.3 V +/- VRIPPLE, VOUT = 3.3 V

Figure 21. PSRR vs. frequency (CNR = 10 nF)

100

120

0.01

0.10

1.00

10.00

100.00

1000.00

10000.00

Frequency [kHz]

ILOAD = 0A

ILOAD = 1mA

ILOAD = 10mA

ILOAD = 100mA

VIN = 4.3 V +/- VRIPPLE, VOUT = 3.3 V

Figure 22. Output noise spectrum (CNR = 10 nF)

0.001

0.010

0.100

1.000

10.000

0.010

0.100

1.000

10.000

100.000

Frequency(kHz)

Iload=1uA

Iload=1mA

Iload=10mA

Iload=100mA

VEN = VIN = 4.3 V, VOUT = 3.3 V, CNR = 10 nF, COUT = 2.2 µF

Figure 23. Output noise spectrum vs. CNR

0.001

0.010

0.100

1.000

10.000

0.010

0.100

1.000

10.000

100.000

Frequency(kHz)

Cnr=0F

Cnr=1nF

Cnr=10nF

Cnr=100nF

VEN = VIN = 4.3 V, VOUT = 3.3 V, IOUT = 100 mA, COUT = 2.2 µF

LDLN050

Typical characteristics

DS12809 - Rev 4

page 10/22

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