A2982 8-Channel Source Driver Features and Benefits Description ▪ TTL, DTL, PMOS, or CMOS compatible inputs ▪ 500 mA output source current capability ▪ Transient-protected outputs ▪ Output breakdown voltage to 50 V ▪ DIP or SOIC packaging Recommended for high-side switching applications that benefit from separate logic and load grounds, these devices encompass load supply voltages to 50 V and output currents to -500 mA. These 8-channel source drivers are useful for interfacing between low-level logic and high-current loads. Typical loads include relays, solenoids, lamps, stepper and/or servo motors, print hammers, and LEDs. Package: 20-pin SOICW (suffix LW) Not to scale All devices may be used with 5 V logic systems — TTL, Schottky TTL, DTL, and 5 V CMOS. The device packages offered are electrically interchangeable, and will withstand a maximum output off voltage of 50 V, and operate to a minimum of 5 V. All devices in this series integrate input current limiting resistors and output transient suppression diodes, and are activated by an active high input. The package is a 20-pin wide-body SOIC with improved thermal characteristics compared to the 18-pin SOIC version it replaces (100% pin-compatible electrically). (drop-in replacement for discontinued 18-pin SOIC variants) The package is lead (Pb) free, with 100% matte-tin leadframe plating. Simplified Block Diagram (NC pins, 10 and 11, not present on discontinued 18-pin LW package) 29310U A2982 8-Channel Source Driver Selection Guide Part Number A2982SLWTR-T Package Packing Ambient Temperature TA (°C) 20-pin SOICW 1000 per reel –20 to 85 Absolute Maximum Ratings Characteristic Symbol Notes Rating Units VCE 5 to 50 V VIN 20 V Output Current IOUT –500 mA Package Power Dissipation PD See graph – – Operating Ambient Temperature TA Range S –20 to 85 ºC Maximum Junction Temperature TJ(max) 150 ºC Tstg –55 to 150 ºC Storage Temperature A L L OWA B L E P A C K A G E P OW E R DIS S IP A T ION (W) Output Voltage Range Input Voltage 2.5 2.0 20-LE AD S OIC , R JA = 90 C /W 1.5 1.0 0.5 0 25 50 75 100 A MB IE NT T E MP E R A T UR E C 125 150 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 A2982 8-Channel Source Driver One of Eight Drivers Typical electrosensitive printer application R IN 1 1 20 IN 2 2 19 IN3 3 18 IN4 4 17 IN 5 5 16 IN6 6 15 IN 7 7 14 IN 8 8 13 VS 9 12 NC 10 11 R R R R R R R L L L L L L L L NC Pins 10 and 11 can float; other pins match discontinued 18-pin SOIC: 1 to 9 same, pins 12 to 20 match pins 10 to 18 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 A2982 8-Channel Source Driver ELECTRICAL CHARACTERISTICS1,2 at TA = +25°C (unless otherwise specified). Characteristic Symbol Test Fig. Min. Typ. Max. Units VIN = 0.4 V, VS = 50 V 1 — — 20 μA IOUT = -45 mA — 35 — — V VIN = 2.4 V, IOUT = -100 mA 2 — 1.6 1.8 V VIN = 2.4 V, IOUT = -225 mA 2 — 1.7 1.9 V VIN = 2.4 V, IOUT = -350 mA 2 — 1.8 2.0 V VIN = 2.4 V 3 — 140 200 μA VIN = 12 V 3 — 1.25 1.93 mA lOUT VIN = 2.4 V, VCE = 2.0 V 2 -350 — — mA Supply Current Leakage Current IS VIN = 2.4 V*, VS = 50 V 4 — — 10 mA Clamp Diode Current IR VR = 50 V, VIN = 0.4 V* 5 — — 50 μA Clamp Diode Forward Voltage VF IF = 350 mA 6 — 1.5 2.0 V Turn-On Delay tON 0.5 EIN to 0.5 EOUT, RL = 100Ω, VS = 35 V — — 0.3 2.0 μs Turn-Off Delay4 tOFF 0.5 EIN to 0.5 EOUT, RL = 100Ω, VS = 35 V, See Note — — 2.0 10 μs Output Leakage Current3 ICEX Output Sustaining Voltage VCE(SUS) Collector-Emitter Saturation Voltage Input Current Output Source Current (Outputs Open) 1Negative VCE(SAT) IIN(ON) Test Conditions current is defined as coming out of (sourcing) the specified device terminal. 2All unused inputs must be connected to ground. Pull-down resistors (approximately 10 kΩ) are recommended for inputs that are allowed to float while power is being applied to VS. 3All inputs simultaneously. 4Turn-off delay is influenced by load conditions. Systems applications well below the specified output loading may require timing considerations for some designs, i.e., multiplexed displays or when used in combination with sink drivers in a totem pole configuration. Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 4 A2982 8-Channel Source Driver TEST FIGURES Figure 1 Figure 2 VS VS V Figure 3 V V CE I IN mA V mA OPEN I OUT VIN μA IN S V IN I CEX Dwg. No. A-11,083 Dwg. No. A-11,084 Figure 4 Dwg. No. A-11,085 Figure 5 VS Figure 6 VS I S mA OPEN μA IR OPEN OPEN VF VIN VIN Dwg. No. A-11,086 Dwg. No. A-11,087 V I F Dwg. No. A-11,088 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 5 A2982 8-Channel Source Driver 500 500 450 450 RECOMMENDED MAXIMUM OUTPUT CURRENT 350 3 300 4 5 250 200 NUMBER OF OUTPUTS CONDUCTING SIMULTANEOUSLY 8 7 6 150 100 400 ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 70°C 400 VS = 15 V RECOMMENDED MAXIMUM OUTPUT CURRENT 350 300 3 4 250 5 200 8 7 6 NUMBER OF OUTPUTS CONDUCTING SIMULTANEOUSLY 150 100 VS = 15 V 50 0 50 0 10 20 30 50 60 40 PER CENT DUTY CYCLE 70 80 90 0 100 10 0 20 30 50 60 40 PER CENT DUTY CYCLE Dwg. No. A-11,107B 70 80 90 100 Dwg. No. A-11,108B Input current as a function of input voltage 2.5 2.0 INPUT CURRENT, IIN (mA) ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 50°C Allowable peak collector current as a function of duty cycle 1.5 UM IM X MA 1.0 AL PIC TY 0.5 2 4 6 8 10 12 INPUT VOLTAGE (VOLTS) Dwg. No. A-11,115B Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 6 A2982 8-Channel Source Driver LW Package, 20-Pin SOICW 12.80±0.20 4° ±4 20 20 +0.07 0.27 –0.06 7.50±0.10 10.30±0.33 A 1 2.25 9.50 +0.44 0.84 –0.43 2 1 2 0.65 0.25 20X SEATING PLANE 0.10 C 0.41 ±0.10 1.27 C SEATING PLANE GAUGE PLANE 1.27 B PCB Layout Reference View 2.65 MAX 0.20 ±0.10 For Reference Only Dimensions in millimeters (Reference JEDEC MS-013 AC) Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Terminal #1 mark area B Reference pad layout (reference IPC SOIC127P1030X265-20M) All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 7 A2982 8-Channel Source Driver Revision History Revision Revision Date Rev. U April 30, 2012 Description of Revision Update product availability Copyright ©1977-2012, Allegro MicroSystems, Inc. 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’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. For the latest version of this document, visit our website: www.allegromicro.com Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 8