NCV4949A datasheet(3/11 Pages) ONSEMI

Part #	NCV4949A

Description	100 mA, 5.0 V, Low Dropout Voltage Regulator with Reset and Sense

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NCV4949A

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ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, −40°C < TA < 125°C, unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Symbol

Iout = 100 mA

−

0.3

0.50

Input to Output Voltage Difference in Undervoltage Condition

VIO

−

0.2

0.4

V

(VCC = 4.0 V, Iout = 35 mA)

Line Regulation (6.0 V < VCC < 28 V, Iout = 1.0 mA)

Regline

−

1.0

20

mV

Load Regulation (1.0 mA < Iout < 100 mA)

Regload

−

8.0

30

mV

Current Limit

ILim

mA

Vout = 4.5 V

105

200

400

Vout = 0 V

−

100

−

Quiescent Current (Iout = 0.3 mA, TA < 100°C)

IQSE

−

150

260

mA

Quiescent Current (Iout = 100 mA)

IQ

−

5.0

mA

RESET

Reset Threshold Voltage

VResth

−

4.5

−

V

Reset Threshold Hysteresis

VResth,hys

mV

@ TA = 25°C

50

100

200

@ TA = −40 to +125°C

50

−

300

Reset Pulse Delay (CT = 100 nF, tR ≥ 100 ms)

tResD

55

100

180

ms

Reset Reaction Time (CT = 100 nF)

tResR

−

5.0

30

ms

Reset Output Low Voltage (RReset = 10 kW to Vout, VCC ≥ 3.0 V)

VResL

−

0.4

V

Reset Output High Leakage Current (VReset = 5.0 V)

IResH

−

1.0

mA

Delay Comparator Threshold

VCTth

−

2.0

−

V

Delay Comparator Threshold Hysteresis

VCTth, hys

−

100

−

mV

SENSE

Sense Low Threshold (VSI Decreasing = 1.5 V to 1.0 V)

VSOth

1.16

1.23

1.35

V

Sense Threshold Hysteresis

VSOth,hys

20

100

200

mV

Sense Output Low Voltage (VSI ≤ 1.16 V, VCC ≥ 3.0 V, RSO = 10 kW to Vout)

VSOL

−

0.4

V

Sense Output Leakage (VSO = 5.0 V, VSI ≥ 1.5 V)

ISOH

−

1.0

mA

Sense Input Current

ISI

−1.0

0.1

1.0

mA

PREREGULATOR

Preregulator Output Voltage (IZ = 10 mA)

VZ

−

6.3

−

V

PIN FUNCTION DESCRIPTION

SO−8, SO−8 EP

SO−20 W

Symbol

Description

1

19

VCC

Supply Voltage

2

20

Si

Input of Sense Comparator

3

1

VZ

Output of Preregulator

4

2

CT

Reset Delay Capacitor

5

4−7, 14−17

GND

Ground

6

10

Reset

Output of Reset Comparator

7

11

SO

Output of Sense Comparator

8

12

Vout

Main Regulator Output

−

3, 8, 9, 13, 18

NC

No Connect

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