NCP4350 datasheet(6/10 Pages) ONSEMI

Part #	NCP4350

Description	Supervisory IC

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP4350

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ELECTRICAL CHARACTERISTICS (VCC = 12V, for typical values TJ = 25°C, for min/max values, TJ = 0°C to +105°C,

Max TJ = 150°C, RI =33 kW, unless otherwise noted.)

Symbol

Unit

Max

Typ

Min

Rating

Delay Characteristics

TdlyPSONB

Time delay On/Off PSONB (PGO

↓) 50% of the pull up voltage

(PSONB>VOHPSONB, Rpull-up FPOB =1k, Vpull-up = +5 V)

24

38

62

msec

TdlyFOP

Time delay between PGO

↓ and FPOB↑

2.0

4.0

8.0

msec

TdlyOV

Time delay from an OV to FPOB

↑ and PGO↓ 50% of the pull up

voltage (PSONB<VOLPSONB, Rpull-up FPOB =1k, Vpull-up = +5 V)

9.0

14

19

msec

TdlyUV

Time delay from an UV to FPOB

↑ and PGO↓ 50% of the pull up

voltage (PSONB<VOLPSONB, Rpull-up FPOB =1k, Vpull-up = +5 V)

0.5

1.0

2.0

msec

TdlyPGO

Time delay PGI

↑ to PGO↓

(PSONB<VOLPSONB, Rpull-up PGO =1k, Vpull-up = +5 V)

100

300

438

msec

TdllySTART

Time delay on start-up UV, OC, OTP lockout

45

75

130

msec

TdelayOTP

Time delay from an OTP

↑ to FPOB↑ and PGO↓ 50% of the pull up

voltage (PSONB<VOLPSONB, Rpull-up FPOB and PGO =1k, Vpull-up

= +5 V) OTP

↓

0.5

1.0

2.0

msec

TdlyOCP

Time delay from an OCP to FPOB

↑ and PGO↓ 50% of the pull up

voltage (PSONB<VOLPSONB, Rpull up FPOB and PGO =1k, Vpull-up

= +5 V)

11

20

32

msec

TdlyPGI

Time delay from PSONB

↓ to PGO↑ 10-90% of the pull up voltage

(PGI>VTHPGI, Rpull-up PGO=1k, Vpull-up = +5V)

124

338

500

msec

Overtemperature Input

VOTP

Voltage threshold for OTP

↓(PGO↓, FPOB↑, PSONB < VOLPSONB,

Rpull-up FPOB and PGO =1k, Vpull-up = +5 V)

1.18

1.25

1.32

V

VOTPHYS

Overtemperature Comparator Hysteresis (Note 3)

50

mV

3. Guaranteed by design.

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