NCV500(2015) View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

NCV500
(Rev.:2015)

150 mA CMOS Low Noise Low-Dropout Voltage Regulator

ON Semiconductor 

NCP500, NCV500

10

UNSTABLE

1

STABLE

0.1

Cout = 1 mF to 10 mF

TA = 40°C to 125°C

Vin = up to 6.0 V

0.01

0

25

50

75

100

125 150

IO, Output Current (mA)

Figure 29. Stability

Input

Q1

R

1

1.0 mF

2

3

Output

5

1.0 mF

4

Figure 30. Current Boost Regulator

The NCP500 series can be current boosted with a PNP transist-

or. Resistor R in conjunction with VBE of the PNP determines

when the pass transistor begins conducting; this circuit is not

short circuit proof. Input/Output differential voltage minimum is

increased by VBE of the pass resistor.

Input

R1

R2

Q2

Q1

R3

1

1.0 mF

2

3

Output

5

1.0 mF

4

Figure 31. Current Boost Regulator with Short

Circuit Limit

Short circuit current limit is essentially set by the VBE of Q2 and

R1. ISC = ((VBEQ2 − ib * R2) / R1) + IO(max) Regulator

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