UDN2981A

2981 and 2982 8-Channel Source Drivers 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. 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. Packages: Not to scale 18-pin DIP (Package A) The suffix “A” indicates an 18-lead plastic dual in-line package with copper lead frame for optimum power dissipation. Under normal operating conditions, these devices will sustain 120 mA continuously for each of the eight outputs at an ambient temperature of +50°C and a supply of 15 V. The suffix “LW” package is provided in a 20-pin wide-body SOIC package with improved thermal characteristics compared to the 18-pin SOIC version it replaces (100% pin-compatible electrically). The A2982ELW driver is available for operation over an extended temperature range, down to -40°C. 20-pin SOICW (package LW) (drop-in replacement for discontinued 18-pin SOIC variants) These packages are lead (Pb) free, with 100% matte-tin leadframe plating. Simplified Block Diagrams 18-pin DIP (A Package) 20-pin SOICW (LW Package) (NC pins, 10 and 11, not present on discontinued 18-pin LW package) 29310T 2981 and 2982 8-Channel Source Drivers Selection Guide Part Number Package Packing Ambient Temperature TA (°C) A2982ELWTR-T1 20-pin SOICW 1000 per reel –40 to 85 A2982SLWTR-T 20-pin SOICW 1000 per reel UDN2981A-T2 18-pin DIP 21 per tube UDN2982A-T2 18-pin DIP 21 per tube –20 to 85 1Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant is obsolete and notice has been given. Sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Status date change November 2, 2009. Deadline for receipt of LAST TIME BUY orders is April 30, 2010. 2Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant is obsolete and notice has been given. Sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Status date change January 30, 2012. Deadline for receipt of LAST TIME BUY orders is April 27, 2012. Absolute Maximum Ratings Characteristic Symbol Output Voltage Range Notes VCE Input Voltage VIN Output Current IOUT Package Power Dissipation PD UDN2981 A2982, UDN2982 See graph Rating Units 5 to 50 V 20 V 20 V –500 mA – – Range E –40 to 85 ºC Range S Operating Ambient Temperature TA –20 to 85 ºC Maximum Junction Temperature TJ(max) 150 ºC Tstg –55 to 150 ºC 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) Storage Temperature 2.5 2.0 18-P IN DIP , R JA = 65 C /W 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 2981 and 2982 8-Channel Source Drivers One of Eight Drivers Typical electrosensitive printer application 18-pin DIP (A Package) 20-pin SOICW (LW Package) R IN1 1 18 IN 2 2 17 IN3 3 16 IN4 4 15 IN 5 5 14 IN6 6 13 IN7 7 12 IN 8 8 11 VS 9 10 R R R R R R R R L IN1 1 20 L IN 2 2 19 L IN3 3 18 IN4 4 17 IN 5 5 16 IN6 6 15 IN7 7 14 IN 8 8 13 VS 9 12 NC 10 11 L L L L L 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 2981 and 2982 8-Channel Source Drivers ELECTRICAL CHARACTERISTICS1,2 at TA = +25°C (unless otherwise specified). Symbol Variant Test Fig. Min. Typ. Max. Units Output Leakage Current3 Characteristic ICEX All VIN = 0.4 V, VS = 50 V 1 — — 20 μA Output Sustaining Voltage VCE(SUS) All 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 = 3.85 V 3 — 310 450 μA VIN = 2.4 V 3 — 140 200 μA VIN = 12 V 3 — 1.25 1.93 mA Collector-Emitter Saturation Voltage VCE(SAT) All 2981 Input Current IIN(ON) 2982 Test Conditions 2981 VIN = 2.4 V, VCE = 2.0 V 2 -350 — — mA 2982 VIN = 2.4 V, VCE = 2.0 V 2 -350 — — mA IS All VIN = 2.4 V*, VS = 50 V 4 — — 10 mA Clamp Diode Current IR All VR = 50 V, VIN = 0.4 V* 5 — — 50 μA Clamp Diode Forward Voltage VF All IF = 350 mA 6 — 1.5 2.0 V Turn-On Delay tON All 0.5 EIN to 0.5 EOUT, RL = 100Ω, VS = 35 V — — 0.3 2.0 μs All 0.5 EIN to 0.5 EOUT, RL = 100Ω, VS = 35 V, See Note — — 2.0 10 μs Output Source Current (Outputs Open) Supply Current Leakage Current Turn-Off Delay4 1Negative lOUT tOFF 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 2981 and 2982 8-Channel Source Drivers 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 2981 and 2982 8-Channel Source Drivers Allowable peak collector current as a function of duty cycle 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 UDN2981A and UDN2982A 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 2981 and 2982 8-Channel Source Drivers A Package, 18-Pin DIP 22.86 ±0.51 18 +0.10 0.25 –0.05 +0.76 6.35 –0.25 +0.38 10.92 –0.25 7.62 A 1 2 5.33 MAX +0.51 3.30 –0.38 2.54 +0.25 1.52 –0.38 0.46 ±0.12 SEATING PLANE C All dimensions nominal, not for tooling use (reference JEDEC MS-001 AC) Dimensions in inches 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 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 2981 and 2982 8-Channel Source Drivers Revision History Revision Revision Date Rev. T Januray 30, 2012 Description of Revision Update product availability Copyright ©1977-2011, 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