ST1CC40DR datasheet(8/37 Pages) STMICROELECTRONICS

部件名	ST1CC40DR

功能描述	3 A monolithic step-down current source with synchronous rectification

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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Electrical characteristics

ST1CC40

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DocID18279 Rev 5

4

Electrical characteristics

TJ= 25 °C, VCC = 12 V, unless otherwise specified.

Table 4. Electrical characteristics

Symbol

Parameter

Test conditions

Value

Unit

Min.

Typ.

Max.

VIN

Operating input voltage range

See(1)

318

V

Device ON level

2.6

2.75

2.9

Device OFF level

2.4

2.55

2.7

VFB

Feedback voltage

TJ = 25 °C

90

97

104

mV

TJ = 125 °C

90

100

110

IFB

VFB pin bias current

600

nA

RDSON-P High-side switch on-resistance

ISW = 750 mA

95

m



RDSON-N Low-side switch on-resistance

ISW = 750 mA

69

m



ILIM

Maximum limiting current

See(2)

5A

Oscillator

FSW

Switching frequency

0.7

0.85

1

MHz

D

Duty cycle

See(2)

0

100

%

DC characteristics

Iq

Quiescent current

Duty cycle = 0 Vfb > 100 mV

1.5

2.5

mA

IQST-BY Total standby quiescent current

OFF

2.4

4.5

A

See(1)

6

Inhibit

VINH

INH threshold voltage

Device ON level

1.2

V

Device OFF level

0.4

IINH

INH current

2

A

Soft-start

TSS

Soft-start duration

1

ms

Protection

TSHDN

Thermal shutdown

150

°C

Hystereris

15

1. Specifications referred to TJ from -40 to +125 °C. Specifications in the -40 to +125 °C temperature range are assured by

design, characterization and statistical correlation.

2. Guaranteed by design.

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