NCV890430MW25TXG datasheet(4/10 Pages) ONSEMI

Part #	NCV890430MW25TXG

Description	Duty Cycle Step?륞own Synchronous Regulator for Automotive

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NCV890430

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Table 3. ELECTRICAL CHARACTERISTICS

(VIN = 4.5 V to 28 V, EN = 5 V. Min/Max values are valid for the temperature range −40°C ≤ TJ ≤ 150°C unless noted otherwise,

and are guaranteed by test, design or statistical correlation.)

Parameter

Test Conditions

Symbol

Min

Typ

Max

Unit

QUIESCENT CURRENT

Quiescent Current, Enabled

VIN = 13.2 V, no switching

IqEN

2.0

3.0

mA

Quiescent Current, Shutdown

VIN = 13.2 V, VEN = 0 V, TJ = 25 °C

IqSD

5.0

8.0

mA

UNDERVOLTAGE LOCKOUT − VIN

UVLO Start Threshold

VIN Rising

VUVLSTT

4.1

4.5

V

UVLO Stop Threshold

VIN Falling

VUVLSTP

3.2

3.5

V

SOFT-START

Soft-Start Completion Time

tSS

0.8

1.4

2.0

ms

OUTPUT VOLTAGE

Output Voltage during Regulation

100

mA < IOUT < 0.6 A

5.0 V Option

3.3 V Option

2.5 V Option

VOUTreg

4.9

3.234

2.45

5.0

3.3

2.5

5.1

3.366

2.55

V

OSCILLATOR

Frequency

4.5 V < VIN < 18 V

20 V < VIN < 28 V

fSW

fSW(HV)

1.8

0.9

2.0

1.0

2.2

1.1

MHz

VBAT OVERVOLTAGE SHUTDOWN MONITOR

Overvoltage Stop Threshold

VOV1SP

37

40

V

Overvoltage Start Threshold

VOV1ST

34.5

V

Overvoltage Hysteresis

VOV1HY

0.9

1.7

2.5

V

VIN FREQUENCY FOLDBACK MONITOR

Frequency Foldback Threshold

VIN Rising

VIN Falling

VFLDUP

VFLDDN

18.4

18

20

19.8

V

Frequency Foldback Hysteresis

VFLDHY

0.2

0.3

0.4

V

PEAK CURRENT LIMIT

Current Limit Threshold

ILIM

1.5

1.7

1.9

A

Low-Side Current Limit Threshold

VSW = 13.2 V

ILIMLS

1.5

2.1

2.7

A

POWER SWITCHES

High-Side Switch ON Resistance

RDSON−HS

550

1000

m

W

Low-Side Switch ON Resistance

RDSON−LS

300

550

m

W

Leakage Current VIN to SW

EN = 0 V, VSW = 0

ILKSWH

10

mA

Leakage Current SW to GND

EN = 0 V, VSW = VIN

ILKSWL

10

mA

Minimum ON Time

Measured at SW Pin

2.5 V Option

3.3 V & 5.0 V Options

tONMIN

35

45

55

70

ns

Minimum OFF Time when Not 100% Duty

Cycle

Measured at SW Pin at fSW = 2 MHz

tOFFMIN

30

50

ns

Non-Overlap Time

tNOVLP

10

ns

SLOPE COMPENSATION

Ramp Slope (Note 2)

(With Respect to Switch Current)

4.5 V < VIN < 18 V

20 V < VIN < 28 V

Sramp

Sramp(HV)

1.05

0.45

1.5

0.70

1.95

0.95

A/

ms

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