QUAD HIGH-CURRENT DARLINGTON SWITCHES QUAD HIGH-CURRENT DARLINGTO

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QUAD HIGH-CURRENT DARLINGTON SWITCHES QUAD HIGH-CURRENT DARLINGTO

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2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
QUAD HIGH-CURRENT DARLINGTON SWITCHES
These quad Darlington arrays designed serve interface between low-level logic peripheral power devices such solenoids, motors, incandescent displays, heaters, similar loads channel. Both integrated circuits include transientsuppression diodes that enable with inductive loads. input logic compatible with most TTL, DTL, LSTTL, CMOS logic. Type UDN2878W UDN2879W arrays identical except output-voltage ratings. former rated operation sustaining), while latter minimum output breakdown rating sustaining). lower-cost UDN2879W-2 recommended applications requiring load currents less. These less expensive devices identical basic parts except maximum allowable load-current rating. maximum power-handling capability, drivers supplied 12-pin single in-line power-tab package. needs insulation. External heat sinks usually required proper operation these devices.
Dwg. A-11,974
2878 2879
Data Sheet 29305.10B*
FEATURES
Output Currents Output Voltages Loads 1280 TTL, DTL, CMOS Compatible Inputs Internal Clamp Diodes Plastic Single In-Line Package Heat-Sink
ABSOLUTE MAXIMUM RATINGS +25°C Free-Air Temperature driver (unless otherwise noted)
Output Voltage, VCEX (UDN2878W (UDN2879W) UDN2879W-2) Output Current, (UDN2878W UDN2879W) (UDN2879W-2) Input Voltage, Input Current, Supply Voltage, Total Package Power Dissipation, Graph Operating Ambient Temperature Range, -20°C +85°C Storage Temperature Range, -55°C +150°C
Always order complete part number: Part Number UDN2878W UDN2879W UDN2879W-2 Max. Max. VCEX Min. (sus)
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
ALLOWABLE PACKAGE POWER DISSIPATION WATTS
2.0°C/W
3.0°C/W HEAT SINK 5.0°C/W
12°C/W HEAT SINK 14°C/W
FREE AIR, 38°C/W
TEMPERATURE
Dwg. GP-012B
PARTIAL SCHEMATIC
Drivers
Dwg. A-12,037
NOTE: must connected ground proper operation.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1983, 1997, Allegro MicroSystems, Inc.
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
ELECTRICAL CHARACTERISTICS +25°C (unless otherwise noted).
Test Characteristic Output Leakage Current Symbol ICEX Fig. Applicable Devices UDN2878W Test Conditions +70°C UDN2879W/W-2 +70°C Output Sustaining Voltage VCE(sus) UDN2878W UDN2879W UDN2879W-2 Collector-Emitter Saturation Voltage VCE(SAT) 2.75 2.75 2.75 2.75 UDN2878/79W Input Current 2.75 3.75 Input Voltage VIN(ON) UDN2878/79W Supply Current Driver Turn-On Delay Turn-Off Delay Clamp Diode Leakage Current tPLH tPHL 2.75 Eout Eout, +70°C UDN2879W/W-2 +70°C Clamp Diode Forward Voltage UDN2878/79W Min. Limits Max. 1000 2.75 2.75 Units
Caution: High-current tests pulse tests require heat sinking.
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
TEST FIGURES
OPEN
OPEN
OPEN
OPEN ICEX
OPEN
Dwg. A-9729A
Dwg. A-10,350
Dwg. A-9732
FIGURE
FIGURE
FIGURE
OPEN
OPEN
OPEN
Dwg. A-9734A
Dwg. A-9735A
Dwg. A-9736
FIGURE
FIGURE
FIGURE
OPEN
Dwg. A-10,351
FIGURE
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
TYPICAL APPLICATIONS
INPUT WAVEFORMS STEPPER-MOTOR DRIVER
Dwg. A-11,795
DIGIT DRIVER MULTIPLEXED INCANDESCENT LAMP DISPLAY
Dwg. A-11,975
PRINT-HAMMER DRIVER
Dwg. A-11,976 Dwg. B-1512
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
Dimensions Inches
1.260 1.240 0.020 0.775 0.765 0.245 0.225
0.180
0.055 0.045 0.155 0.145 0.135 0.100
0.140 0.365 0.570 0.540
INDEX AREA
0.290
0.065 0.035
0.030 0.020
0.100
±0.010
0.023 0.018
0.080 0.070
Dwg. MP-007
NOTES:
Lead thickness measured seating plane below. Lead spacing tolerance non-cumulative Exact body lead configuration vendor's option within limits shown. Lead gauge plane 0.030" below seating plane.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
Dimensions Millimeters (Based 25.4
32.00 31.49 0.51 19.69 19.45 6.22 5.71
4.57
1.40 1.14 3.94 3.68 3.43 2.54
3.56 9.27 14.48 13.71
INDEX AREA
7.36
1.65 0.89
0.76 0.51
2.54
±0.254
0.59 0.45
2.03 1.77
Dwg. MP-007
NOTES:
Lead thickness measured seating plane below. Lead spacing tolerance non-cumulative Exact body lead configuration vendor's option within limits shown. Lead gauge plane 0.762 below seating plane.
2878 2879
QUAD HIGH-CURRENT DARLINGTON SWITCHES
POWER SINK DRIVERS SELECTION GUIDE
ORDER OUTPUT CURRENT, OUTPUT VOLTAGE, NUMBER DRIVERS
Output Ratings
Serial Latched
Features
Diode Saturated Internal Protection Input Drivers Clamp Outputs Hall Sensor/Driver Hall Sensor/Driver Dual 14-Line Decoder/Driver Hall Sensor/Driver Hall Sensor/Driver Stepper Motor Controller/Driver Microstepping Controller/Driver Stepper Motor Translator/Driver Stepper Motor Controller/Driver
Part Number
2595 5833 5832 7003 5140 2596 5275 5800 5801 5821 5841 5842 6817 2547 2549 2543 2559 2597 3625 3626 7024 7029 7042 5804 2064 2068 2065 2069 5829 2544 2540 7026 2878 2879
1000 1200 1250 1500 1600 1800 3000 4000
Current maximum specified test condition, voltage maximum rating. specification sustaining voltage limits over-current protection voltage limits. Complete part number includes additional characters indicate operating temperature range package style.
Allegro MicroSystems, Inc. reserves right make, from time time, such departures from detail specifications required permit improvements design products. Components made under military approvals will accordance with approval requirements. information included herein believed accurate reliable. However, Allegro MicroSystems, Inc. assumes responsibility use; infringements patents other rights third parties which result from use.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

QUAD HIGH-CURRENT DARLINGTON SWITCHES QUAD HIGH-CURRENT DARLINGTO

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