ADP190/ADP191

Rev. D | Page 11 of 16

2

CH2 1V

M4µs

A CH1

2.34V

T

15.96µs

1

T

Figure 23. ADP190 Typical Turn-On Delay Time with Varying Input Voltage

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

500

0

100

200

300

400

TIME (µs)

Figure 24. ADP191 Typical Turn-On Delay Time with Varying Input Voltage

The rise time is defined as the delta between the time from 10%

to 90% of VOUT reaching its final value. It is dependent on the

ADP191 do not need any input or load capacitor, but capacitors

can be used to suppress noise on the board. If significant load

capacitance is connected, inrush current is a concern.

The ADP191 contains circuitry to limit the slew rate of the

switch turn to reduce the turn on inrush current. See Figure 25

and Figure 26 for a comparison of rise time and inrush current.

2

3

CH3 2.00mA

Ω

CH2 2V

M10µs

A CH1

2.32V

T

40.16µs

1

T

2

3

CH1 2.00V

CH2 100mA

CH3 2.00V

M20.0µs

A CH1

1.24V

1

T

2

3

CH3 2.00mA

Ω

CH2 2V

M10µs

A CH1

1.00V

T

39.8µs

1

T