2878

2878 ALLEGRO

Document overview

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Technical content

These quad Darlington arrays are designed to serve as interface between low-level logic and peripheral power devices such as sole- noids, motors, incandescent displays, heaters, and similar loads of up to 320 W per channel. Both integrated circuits include transient-suppres- sion diodes that enable use with inductive loads. The input logic is compatible with most TTL, DTL, LSTTL, and 5 V CMOS logic. Type UDN2878W and UDN2879W 4 A arrays are identical except for output-voltage ratings. The former is rated for operation to 50 V (35 V sustaining), while the latter has a minimum output breakdown rating of 80 V (50 V sustaining). The lower-cost UDN2879W-2 is recommended for applications requiring load currents of 3 A or less. These less expensive devices are identical to the basic parts except for the maximum allowable load-current rating. For maximum power-handling capability, all drivers are supplied in a 12-pin single in-line power-tab package. The tab needs no insula- tion. External heat sinks are usually required for proper operation of these devices.

FEATURES

I TTL, DTL, or CMOS Compatible Inputs I Internal Clamp Diodes I Plastic Single In-Line Package I Heat-Sink Tab QUAD HIGH-CURRENT DARLINGTON SWITCHES Always order by complete part number: Part Number Max. I C Max. VCEX Min. VCE (sus) UDN2878W 5.0 A 50 V 35 V UDN2879W 5.0 A 80 V 50 V UDN2879W-2 4.0 A 80 V 50 V Data Sheet29305.10B†

2878 AND

at +25°C Free-Air Temperature for any driver (unless otherwise noted) Output Voltage, VCEX (UDN2879W & UDN2879W-2) . . 80 V Output Current, lC (UDN2878W & UDN2879W) . . . 5.0 A Total Package Power Dissipation, Operating Ambient Temperature Range, Storage Temperature Range, Dwg. No. A-11,974

2878 AND 2879

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000 PARTIAL SCHEMATIC One of 4 Drivers 50 75 100 125 150 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS TEMPERATURE IN °C R = 2.0°C/W θJT Dwg. GP-012B FREE AIR, R = 38°C/WθJA 3.0°C/W HEAT SINK R = 5.0°C/WθJA 12°C/W HEAT SINK R = 14°C/WθJA Dwg. No. A-12,037 NOTE: Pin 3 must be connected to ground for proper operation. Copyright © 1983, 2000 Allegro MicroSystems, Inc.

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 I CEX 1 UDN2878W V CE = 50 V — 100 µA VCE = 50 V, TA = +70°C — 500 µA UDN2879W/W-2 V CE = 80 V — 100 µA VCE = 80 V, TA = +70°C — 500 µA Output Sustaining V CE(sus) — UDN2878W l C = 4 A, L = 10 mH 35 — V Voltage UDN2879W l C = 4 A, L = 10 mH 50 — V UDN2879W-2 l C = 3 A, L = 10 mH 50 — V Collector-Emitter V CE(SAT) 2A l l l C = 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 l C = 4.0 A, VIN = 3.0 V — 2.4 V Input Current I IN 3A l l V IN = 2.75 V — 550 µA VIN = 3.75 V — 1000 µA Input Voltage V IN(ON) 4A l l V CE = 2.2 V, lC = 3.0 A — 2.75 V UDN2878/79W V CE = 2.2 V, lC = 4.0 A — 2.75 V Supply Current per Driver I S 7A l l l C = 500 mA, VIN = 2.75 V — 6.0 mA Turn-On Delay t PLH — All 0.5 E in to 0.5 Eout — 1.0 µs Turn-Off Delay t PHL — All 0.5 E in to 0.5 Eout, lC = 3.0 A — 1.5 µs Clamp Diode I R 5A l l V R = 50 V — 50 µA Leakage Current VR = 50 V, TA = +70°C — 100 µA UDN2879W/W-2 V R = 80 V — 50 µA VR = 80 V, TA = +70°C — 100 µA Clamp Diode V F 6A l l I F = 3.0 A — 2.5 V Forward Voltage UDN2878/79W I F = 4.0 A — 3.0 V ELECTRICAL CHARACTERISTICS at VS = 5.0 V, TA = +25°C (unless otherwise noted).

Worcester, Massachusetts 01615-0036 (508) 853-5000 TEST FIGURES Dwg. No. A-9732Dwg. No. A-9729A FIGURE 1 FIGURE 2 Dwg. No. A-10,350 FIGURE 3 VCE VIN OPEN IC V VIN OPEN mA OPEN IINOPEN OPEN VCE ICEX µA V OPEN VCE V VIN IC Dwg. No. A-9734A OPEN VR IR µA Dwg. No. A-9735A IF OPEN VF V Dwg. No. A-9736 FIGURE 4 FIGURE 5 FIGURE 6 OPEN IC mA VIN VS IS Dwg. No. A-10,351 FIGURE 7

www.allegromicro.com PRINT-HAMMER DRIVER TYPICAL APPLICATIONS INPUT WAVEFORMS STEPPER-MOTOR DRIVER Dwg. No. A-11,976 Dwg. No. B-1512 Dwg. No. A-11,975 Dwg. No. A-11,795 DIGIT DRIVER FOR MULTIPLEXED INCANDESCENT LAMP DISPLAY

Worcester, Massachusetts 01615-0036 (508) 853-5000 Dimensions in Inches (controlling dimensions) Dwg. MP-007 in 1.260 1.240 0.775 0.765 0.020 0.155 0.145 ø 0.180 MAX 0.055 0.045 0.135 0.100

0.290 MIN

0.080 0.070 0.365 0.100 ±0.010 0.030 0.020 0.065 0.035 1 0.023 0.018 0.140 0.570 0.540 0.245 0.225 INDEX AREA NOTES: 1. Lead thickness is measured at seating plane or below. 2. Lead spacing tolerance is non-cumulative. 3. Exact body and lead configuration at vendor’s option within limits shown. 4. Lead gauge plane is 0.030” below seating plane. 5. Supplied in standard sticks/tubes of 15 devices.

www.allegromicro.com NOTES: 1. Lead thickness is measured at seating plane or below. 2. Lead spacing tolerance is non-cumulative. 3. Exact body and lead configuration at vendor ’s option within limits shown. 4. Lead gauge plane is 0.762 mm below seating plane. 5. Supplied in standard sticks/tubes of 15 devices. Dwg. MP-007 mm 32.00 31.49 19.69 19.45 0.51 3.94 3.68 ø 4.57 MAX 1.40 1.14 3.43 2.54

7.36 MIN

2.03 1.77 9.27 2.54 ±0.254 0.76 0.51 1.65 0.89 1 0.59 0.45 3.56 14.48 13.71 6.22 5.71 INDEX AREA Dimensions in Millimeters (for reference only) The products described here are manufactured under one or more Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsi- bility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.

Worcester, Massachusetts 01615-0036 (508) 853-5000 POWER SINK DRIVERS IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS Output Ratings * Features Serial Latched Diode Internal mA V # Input Drivers Clamp Outputs Protection Part Number † 75 17 8 X X – constant current – 6275 17 16 X X – constant current – 6276 100 20 8 – – – saturated – 2595 30 32 X X – – – 5833 40 32 X X – saturated – 5832 50 8 addressable decoder/driver DMOS – 6B259 50 8 – X – DMOS – 6B273 50 8 X X – DMOS – 6B595 250 50 8 addressable decoder/driver DMOS – 6259 50 8 – X – DMOS – 6273 50 8 X X – DMOS – 6595 135 7 – – X – – 7003 300 45 1 – Hall sensor/driver X – X 5140 50 8 – – X saturated – 2596 60 4 – – X saturated X 2557 350 50 4 – X X – – 5800 50 7 – – X – – 2003 50 7 – – X – – 2004 50 8 – – X – – 2803 50 8 – – X – – 2804 50 8 – X X – – 5801 50 8 X X – – – 5821 50 8 X X X – – 5841 50 8 addressable decoder/driver DMOS – 6A259 50 8 X X – DMOS – 6A595 80 8 X X – – – 5822 80 8 X X X – – 5842 95 7 – – X – – 2023 95 7 – – X – – 2024 95 8 – – X – – 2823 95 8 – – X – – 2824 450 30 28 dual 4- to 14-line decoder/driver – – 6817 600 60 4 – – – saturated X 2547 60 4 – – X saturated X 2549 and 2559 700 60 4 – – X saturated X 2543 750 50 8 – – X saturated – 2597 900 14 2 – Hall sensor/driver X saturated X 3625 26 2 – Hall sensor/driver X saturated X 3626 1000 46 4 stepper motor controller/driver MOS – 7024 and 7029 1200 46 4 microstepping controller/driver MOS – 7042 1250 50 4 stepper motor translator/driver – X 5804 50 4 – – X – – 2064 and 2068 1500 80 4 – – X – – 2065 and 2069 1800 50 4 – – X – – 2544 50 4 – – X – – 2540 3000 46 4 stepper motor controller/driver MOS – 7026 46 4 microstepping controller/driver MOS – 7044 4000 50 4 – – X – – 2878 80 4 – – X – – 2879 * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. † Complete part number includes additional characters to indicate operating temperature range and package style.