UDN2879 datasheet(3/8 Pages) ALLEGRO

Part #	UDN2879

Description	QUAD HIGH-CURRENT DARLINGTON SWITCHES

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Manufacturer	ALLEGRO [Allegro MicroSystems]

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2878 AND 2879

QUAD HIGH-CURRENT

DARLINGTON SWITCHES

www.allegromicro.com

Caution: High-current tests are pulse tests or require heat sinking.

Test

Applicable

Limits

Characteristic

Symbol

Fig.

Devices

Test Conditions

Min.

Max.

Units

Output Leakage Current

ICEX

1

UDN2878W

VCE = 50 V

—

100

µA

VCE = 50 V, TA = +70

°C

—

500

µA

UDN2879W/W-2

VCE = 80 V

—

100

µA

VCE = 80 V, TA = +70

°C

—

500

µA

Output Sustaining

VCE(sus)

—

UDN2878W

lC = 4 A, L = 10 mH

35

—

V

Voltage

UDN2879W

lC = 4 A, L = 10 mH

50

—

V

UDN2879W-2

lC = 3 A, L = 10 mH

50

—

V

Collector-Emitter

VCE(SAT)

2All

lC = 500 mA, VIN = 2.75 V

—

1.1

V

Saturation Voltage

lC = 1.0 A, VIN = 2.75 V

—

1.3

V

lC = 2.0 A, VIN = 2.75 V

—

1.5

V

lC = 3.0 A, VIN = 2.75 V

—

1.9

V

UDN2878/79W

lC = 4.0 A, VIN = 3.0 V

—

2.4

V

Input Current

IIN

3All

VIN = 2.75 V

—

550

µA

VIN = 3.75 V

—

1000

µA

Input Voltage

VIN(ON)

4All

VCE = 2.2 V, lC = 3.0 A

—

2.75

V

UDN2878/79W

VCE = 2.2 V, lC = 4.0 A

—

2.75

V

Supply Current per Driver

IS

7All

lC = 500 mA, VIN = 2.75 V

—

6.0

mA

Turn-On Delay

tPLH

—

All

0.5 Ein to 0.5 Eout

—

1.0

µs

Turn-Off Delay

tPHL

—

All

0.5 Ein to 0.5 Eout, lC = 3.0 A

—

1.5

µs

Clamp Diode

IR

5All

VR = 50 V

—

50

µA

Leakage Current

VR = 50 V, TA = +70

°C

—

100

µA

UDN2879W/W-2

VR = 80 V

—

50

µA

VR = 80 V, TA = +70

°C

—

100

µA

Clamp Diode

VF

6All

IF = 3.0 A

—

2.5

V

Forward Voltage

UDN2878/79W

IF = 4.0 A

—

3.0

V

ELECTRICAL CHARACTERISTICS at VS = 5.0 V, TA = +25°C (unless otherwise noted).

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