6.6 Typical Characteristics (continued)

at operating temperature TJ = 25°C, VIN = VOUT(NOM) + 1.0 V or 2.5 V (whichever is greater), IOUT = 1 mA, ON/OFF pin tied to

VIN, CIN = 1.0 µF, and COUT = 4.7 µF (unless otherwise noted)

Frequency - (Hz)

1x101

1x102

1x103

1x104

1x105

1x106

1x107

0.001

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

ILOAD = 1mA

CBYP

100pF

1nF

10nF

Figure 6-31. Output Noise Density vs Frequency for New Chip

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

0

1

2

3

4

5

6

Input Voltage − (V)

RL = Open

RL = 3.3 kW

VO = 3.3 V

Cbyp = 10 nF

Figure 6-32. Input Current vs Input Voltage for Legacy Chip

VIN

0

2

4

6

8

10

12

14

16

-200

0

200

400

600

800

1000

VO = 3.3 V

CO = 4.7uF

Temperature

-55 °C

-40 °C

0 °C

25 °C

85 °C

125 °C

150 °C

Figure 6-33. Input Current vs Input Voltage for New Chip

0

200

400

600

800

1000

1200

1400

−50

−25

0

25

50

75

100

125

150

0 mA

Temperature − (°C)

150 mA

50 mA

10 mA

1 mA

VO = 3.3 V

Cbyp = 10 nF

Figure 6-34. Ground-Pin Current vs Temperature for Legacy

Chip

Temperature

C

-75

-50

-25

0

25

50

75

100

125

150

0

200

400

600

800

1000

1200

1400

VI = 4.3 V

VO = 3.3 V

Load Current

0

1mA

10mA

50mA

150mA

Figure 6-35. Ground-Pin Current vs Temperature for New Chip

Figure 6-36. 2.2-μF Stable ESR Range for Output Voltage ≤ 2.3 V

for Legacy Chip

LP2985

SLVS522Q – JULY 2004 – REVISED DECEMBER 2022

www.ti.com

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