8.2.3 Application Curves (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)

−4

−3

−2

−1

0

1

2

3

4

0

2

4

6

8

10

VO

VON/OFF

2 ms/div→

VO = 3.3 V

Cbyp = 1 nF

ILOAD = 150 mA

COUT = 4.7 μF

Figure 8-21. Turn-On Time for Legacy Chip

2 ms/div

0

2

4

6

8

10

12

-4

0

-3

2

-2

4

-1

6

0

8

1

10

2

12

3

14

4

16

V0= 3.3 V

Cbyp = 1nF

ILOAD = 150mA

Vo

VON

COUT = 4.7 μF

Figure 8-22. Turn-On Time for New Chip

−4

−3

−2

−1

0

1

2

3

4

0

2

4

6

8

10

Input

Output

VO = 3.3 V

Cbyp = 10 nF

ILOAD = 150 mA

20 ms/div→

COUT = 4.7 μF

Figure 8-23. Turn-On Time

20ms/div

0

20

40

60

80

100

120

-4

0

-3

2

-2

4

-1

6

0

8

1

10

2

12

3

14

4

16

V0 = 3.3 V

Cbyp = 10 nF

ILOAD = 150 mA

VOUT

VON

COUT = 4.7 μF

Figure 8-24. Turn-On Time for New Chip

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LP2985, LP2985A

SLVS522R – JULY 2004 – REVISED JULY 2023

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