 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES These quad Darlington arrays are designed to serve as interface between low-level logic and peripheral power devices such as solenoids, motors, incandescent displays, heaters, and similar loads of up to 320 W per channel. Both integrated circuits include transientsuppression 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 insulation. External heat sinks are usually required for proper operation of these devices. Data Sheet 29305.10B* FEATURES Dwg. No. A-11,974 ABSOLUTE MAXIMUM RATINGS at +25C Free-Air Temperature for any driver (unless otherwise noted) Output Voltage, V CEX (UDN2878W) . . . . . . . . . . . . . . . . 50 V (UDN2879W & UDN2879W-2) . . 80 V Output Current, lC (UDN2878W & UDN2879W) . . . 5.0 A (UDN2879W-2) . . . . . . . . . . . . . 4.0 A Input Voltage, VIN . . . . . . . . . . . . . . . . 15 V Input Current, IIN . . . . . . . . . . . . . . . 25 mA Supply Voltage, VS . . . . . . . . . . . . . . . 10 V Total Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . See Graph Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . -20C to +85C Storage Temperature Range, TS . . . . . . . . . . . . . . . -55C to +150C s s s s s s s Output Currents to 4 A Output Voltages to 80 V Loads to 1280 W TTL, DTL, or CMOS Compatible Inputs Internal Clamp Diodes Plastic Single In-Line Package Heat-Sink Tab Always order by complete part number: Part Number UDN2878W UDN2879W UDN2879W-2 Max. IC 5.0 A 5.0 A 4.0 A Max. VCEX 50 V 80 V 80 V Min. VCE (sus) 35 V 50 V 50 V 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES 10 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS RJT = 2.0C/W 8 3.0C/W HEAT SINK R = 5.0C/W JA 6 12C/W HEAT SINK R = 14C/W JA 4 2 FREE AIR, R JA = 38C/W 0 25 50 75 100 TEMPERATURE IN C 125 150 Dwg. GP-012B PARTIAL SCHEMATIC One of 4 Drivers Dwg. No. A-12,037 NOTE: Pin 3 must be connected to ground for proper operation. 115 Northeast Cutoff, Box 15036 W Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1983, 1997, Allegro MicroSystems, Inc. 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES ELECTRICAL CHARACTERISTICS at VS = 5.0 V, TA = +25C (unless otherwise noted). Test Characteristic Output Leakage Current Symbol ICEX Fig. 1 Applicable Devices UDN2878W Test Conditions VCE = 50 V VCE = 50 V, TA = +70C UDN2879W/W-2 VCE = 80 V VCE = 80 V, TA = +70C Output Sustaining Voltage VCE(sus) -- UDN2878W UDN2879W UDN2879W-2 Collector-Emitter Saturation Voltage VCE(SAT) 2 All l C = 4 A, L = 10 mH l C = 4 A, L = 10 mH l C = 3 A, L = 10 mH lC = 500 mA, VIN = 2.75 V lC = 1.0 A, VIN = 2.75 V lC = 2.0 A, VIN = 2.75 V lC = 3.0 A, VIN = 2.75 V UDN2878/79W Input Current IIN 3 All lC = 4.0 A, VIN = 3.0 V VIN = 2.75 V VIN = 3.75 V Input Voltage VIN(ON) 4 All UDN2878/79W Supply Current per Driver Turn-On Delay Turn-Off Delay Clamp Diode Leakage Current IS tPLH tPHL IR 7 -- -- 5 All All All All V CE = 2.2 V, lC = 3.0 A V CE = 2.2 V, lC = 4.0 A lC = 500 mA, VIN = 2.75 V 0.5 Ein to 0.5 E out 0.5 Ein to 0.5 Eout, lC = 3.0 A VR = 50 V VR = 50 V, TA = +70C UDN2879W/W-2 VR = 80 V VR = 80 V, TA = +70C Clamp Diode Forward Voltage VF 6 All UDN2878/79W IF = 3.0 A IF = 4.0 A Min. -- -- -- -- 35 50 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Limits Max. 100 500 100 500 -- -- -- 1.1 1.3 1.5 1.9 2.4 550 1000 2.75 2.75 6.0 1.0 1.5 50 100 50 100 2.5 3.0 Units A A A A V V V V V V V V A A V V mA s s A A A A V V Caution: High-current tests are pulse tests or require heat sinking. 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES TEST FIGURES OPEN VCE OPEN OPEN A OPEN ICEX IIN VIN V VCE mA OPEN IC VIN Dwg. No. A-9729A Dwg. No. A-10,350 Dwg. No. A-9732 FIGURE 1 FIGURE 2 FIGURE 3 OPEN VR A IR V OPEN VF IF VIN V VCE V IC OPEN Dwg. No. A-9734A Dwg. No. A-9735A Dwg. No. A-9736 FIGURE 4 FIGURE 5 FIGURE 6 VS OPEN IS mA VIN IC Dwg. No. A-10,351 FIGURE 7 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES TYPICAL APPLICATIONS INPUT WAVEFORMS STEPPER-MOTOR DRIVER Dwg. No. A-11,795 DIGIT DRIVER FOR MULTIPLEXED INCANDESCENT LAMP DISPLAY Dwg. No. A-11,975 PRINT-HAMMER DRIVER Dwg. No. A-11,976 Dwg. No. B-1512 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES Dimensions in Inches (controlling dimensions) 1.260 1.240 0.020 0.775 0.765 0.245 0.225 0.180 MAX 0.055 0.045 0.155 o 0.145 0.135 0.100 0.140 0.365 0.570 0.540 INDEX AREA 0.290 MIN 1 0.065 0.035 0.030 0.020 12 0.100 0.010 0.023 0.018 0.080 0.070 Dwg. MP-007 in NOTES: 1. 2. 3. 4. Lead thickness is measured at seating plane or below. Lead spacing tolerance is non-cumulative Exact body and lead configuration at vendor's option within limits shown. Lead gauge plane is 0.030" below seating plane. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES Dimensions in Millimeters (for reference only) 32.00 31.49 0.51 19.69 19.45 6.22 5.71 4.57 MAX 1.40 1.14 3.94 o 3.68 3.43 2.54 3.56 9.27 14.48 13.71 INDEX AREA 7.36 MIN 1 1.65 0.89 0.76 0.51 12 2.54 0.254 0.59 0.45 2.03 1.77 Dwg. MP-007 mm NOTES: 1. 2. 3. 4. Lead thickness is measured at seating plane or below. Lead spacing tolerance is non-cumulative Exact body and lead configuration at vendor's option within limits shown. Lead gauge plane is 0.762 mm below seating plane. 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 design of its products. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. 2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES POWER SINK DRIVERS SELECTION GUIDE IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS Output Ratings * mA 100 Features Serial Latched Diode Saturated Input Drivers Clamp Outputs - - - X X X - - X X - X - - X - Hall Sensor/Driver X - - - X - - - X - - - X X Hall Sensor/Driver - X - - X X - - X - - - X - - X X - - - X - - - X - - X X - X X - - X X - - X X X - X X X - - - X - - - X - Dual 4 to 14-Line Decoder/Driver - - - - X - - X X - - X X - - X X Hall Sensor/Driver X X Hall Sensor/Driver X X Stepper Motor Controller/Driver MOS Microstepping Controller/Driver MOS Stepper Motor Translator/Driver - - - X - - - X - X X - - - - X - - - X - Stepper Motor Controller/Driver MOS - - X - - - X - Internal Protection - - - - X - - - - X - - - - - - - - - - - - - X X X - X X - - X - - X - - - - - V 20 30 40 135 45 50 50 50 60 60 95 95 50 50 50 50 50 80 50 80 95 95 30 60 60 60 50 14 26 46 46 50 50 80 50 50 50 46 50 80 # 8 32 32 7 1 7 8 8 2 4 7 8 4 7 8 8 8 8 8 8 7 8 28 4 4 4 8 2 2 4 4 4 4 4 9 4 4 4 4 4 Part Number 2595 5833 5832 7003 5140 2003 2803 2596 5275 2557 2023 2823 5800 2004 2804 5801 5821 5822 5841 5842 2024 2824 6817 2547 2549 2543 and 2559 2597 3625 3626 7024 and 7029 7042 5804 2064 and 2068 2065 and 2069 5829 2544 2540 7026 2878 2879 250 300 350 450 600 700 750 900 1000 1200 1250 1500 1600 1800 3000 4000 * 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. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 |
Price & Availability of 2878
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |