NCP372 datasheet(4/12 Pages) ONSEMI

Part #	NCP372

Description	Positive and Negative Overvoltage Protection Controller

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NCP372

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ELECTRICAL CHARACTERISTICS (Vin = 5 V, Minimum/Maximum limits at −40°C < TA < +85°C unless otherwise noted. Typical

values are at TA = +25°C)

Characteristics

Symbols

Conditions

Min

Typ

Max

Unit

Input Voltage Range

Vin

EN = low or high, Vout = 0 V

−28

28

V

Input Voltage

Vinmin

EN = low or high, Vout = 4.25V

−24

V

Undervoltage Lockout Threshold

UVLO

Vin falls below UVLO Threshold

2.6

2.7

2.8

V

Undervoltage Lockout

Hysteresis

UVLOhyst

Vin rises above UVLO Threshold + UVLOhyst

45

60

75

mV

Over voltage Lockout Threshold

NCP372MUAITXG

OVLO

Vin rises above OVLO threshold

6.0

6.3

6.6

V

Overvoltage Lockout Hysteresis

OVLOhyst

Vin falls below to OVLO − OVLOhyst

60

80

100

mV

Vin to Vout Resistance

RDS(on)

Vin = 5 V, EN = low, Load Connected to Vout

Vin = 5 V, EN = low,

Load Connected to Vout @ 25°C

130

220

200

mW

Input Standby Current

IddSTD

No Load. EN = high, Vin connected

90

170

mA

Input Supply Quiescent Current

IddIN

25°C

Overtemperature Range

200

260

310

mA

FLAG Output Low Voltage

Volflag

1.2 V < Vin < UVLO

Sink 50 mA on FLAG Pin

30

400

mV

Vin > OVLO, Sink 1 mA on FLAG Pin

400

FLAG Leakage Current

FLAGleak

FLAG Level = 5.5 V

1.0

nA

EN Voltage High

VihEN

1.2

V

EN Voltage Low

VilEN

0.55

V

EN Leakage Current

ENleak

Vin connected

Vin disconnected

200

1.0

nA

Thermal Shutdown Temperature

TSD

150

°C

Thermal Shutdown Hysteresis

TSDHYST

30

°C

TIMINGS

Start Up Delay

ton

From Vin > UVLO to Vout w 0.3 V

20

30

40

ms

FLAG Going Up Delay

tstart

From Vout > 0.3 V to FLAG = 1.2 V

20

30

40

ms

Turn Off Delay

toff

From Vin > OVLO to Vout v 0.3 V

Vin Increasing from 5 V to 8 V at 3 V/ms

1.5

5.0

ms

Alert Delay

tstop

From Vin > OVLO to FLAG v 0.4 V See Figure 3

and 9 Vin Increasing from 5 V to 8 V at 3 V/ms

1.5

ms

Disable Time

tdis

EN = 0.4 V to 1.2 V to Vout v 0.3 V

2.5

ms

NOTE: Electrical parameters are guaranteed by correlation across the full range of temperature.

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