Data Sheet 29320.2B 2596 AND 2597 8-CHANNEL SATURATED SINK DRIVERS Low output-saturation voltages at high load currents are provided by UDN2596A and UDN2597A sink driver ICs. These devices can be used as interface buffers between standard low-power digital logic (particularly MOS) and high-power loads such as relays, solenoids, stepping motors, and LED or incandescent displays. The eight saturated sink drivers in each device feature high-voltage, high-current open-collector outputs. Transient suppression clamp diodes and a minimum 35 V output sustaining voltage allow their use with many inductive loads. T C U D O R y l P On The saturated (non-Darlington) NPN outputs provide low collectoremitter voltage drops as well as improved turn-off times due to an active pull-down function within the output predrive section. The UDN2596A is for use with output loads to 500 mA while the UDN2597A is for use with loads to 1 A. Adjacent outputs may be paralleled for higher load currents. Inputs require very low input current and are activated by a low logic level consistent with the much greater sinking capability associated with NMOS, CMOS, and TTL logic. The UDN2596A and UDN2597A are rated for use with 5 V logic levels. D e E c U n e N er I T f e N R O r C o S F I D Dwg. No. W-100 Both devices are furnished in 20-pin DIP packages with copper leadframes for improved thermal characteristics. The UDN2596A is also available for operation between -40°C and +85°C. To order, change the prefix from ‘UDN’ to ‘UDQ’. FEATURES ABSOLUTE MAXIMUM RATINGS at TA = + 25°C OutputVoltage,VCE ................................ 50 V Output Current, IOUT (UDN2596A) ............................ 500 mA (UDN2597A) ................................ 1.0 A Supply Voltage, VCC ............................ 7.0 V Input Voltage, VlN ................................. 7.0 V Package Power Dissipation, PD ............................................. 2.27 W* Operating Temperature Range, TA ................................. -20°C to +85°C Storage Temperature Range, TS .............................. - 65°C to +150°C ■ ■ ■ ■ ■ Non-Inverting Function Low Output ON Voltages Up to 1.0 A Sink Capability 50 V Min. Output Breakdown Output Transient-Suppression Diodes ■ Output Pull-Down for Fast Turn-Off ■ TTL, CMOS Compatible Inputs ■ Automotive Capable ONE OF EIGHT DRIVERS *Derate at the rate of 18.2 mW/°C above TA = +25°C Dwg. No. W-101 2596 AND 2597 8-CHANNEL SATURATED SINK DRIVERS ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 5.0 V Characteristics Symbol Output Leakage Current ICEX Output Sustaining Voltage VCE(sus) Output Saturation Voltage VCE(SAT) Applicable Devices Limits Test Conditions Min. Max. Units Both VOUT = 50 V, VIN = 2.4 V — 10 µA UDN2596A lOUT = 300 mA, L = 2 mH 35 — V UDN2597A lOUT = 750 mA, L = 2 mH 35 — V UDN2596A lOUT = 300 mA — 0.5 V UDN2597A lOUT = 750 mA — 1.0 V VR = 50 V — 10 µA Clamp Diode Leakage Current IR Both Clamp Diode Forward Voltage VF UDN2596A IF = 300 mA — 1.8 V UDN2597A IF = 750 mA — 1.8 V UDN2956A VIN = 0.8 V — -15 µA UDN2597A VIN = 0.8 V — -50 µA Both VIN = 2.4 V — 10 µA UDN2596A any one driver VIN = 0.8 V — 6.0 mA UDN2597A any one driver VIN = 0.8 V — 31 mA UDN2596A all drivers VIN = 2.4 V 0.75 1.3 mA UDN2597A all drivers VIN = 2.4 V 0.75 15 mA Logic lnput Current IlN(0) IlN(1) Supply Current ICC(ON) ICC(OFF) Turn-On Delay tpd0 Both 0.5 EIN to 0.5 EOUT — 3.0 µs Turn-Off Delay tpd1 Both 0.5 EIN to 0.5 EOUT — 2.0 µs TYPICAL APPLICATION DUAL STEPPER MOTOR DRIVE RECOMMENDED OPERATING CONDITIONS Type Number Logic IOUT UDN2596A 5.0 V 300 mA UDN2597A 5.0 V 750 mA Note: Pins 2 and 12 must both be connected to power ground. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1984, 2003 Allegro MicroSystems, Inc. 2596 AND 2597 8-CHANNEL SATURATED SINK DRIVERS Dimensions in Inches (controlling dimensions) 20 0.014 0.008 11 0.430 MAX 0.280 0.240 0.300 BSC 1 0.070 0.045 0.100 1.060 0.980 10 0.005 BSC MIN 0.210 MAX 0.015 0.150 0.115 MIN 0.022 0.014 Dwg. MA-001-20 in Dimensions in Millimeters (for reference only) 20 0.355 0.204 11 10.92 MAX 7.11 6.10 7.62 BSC 1 1.77 1.15 2.54 26.92 24.89 10 BSC 0.13 MIN 5.33 MAX 0.39 3.81 2.93 MIN 0.558 0.356 NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is non-cumulative. 3. Lead thickness is measured at seating plane or below. Dwg. MA-001-20 mm 2596 AND 2597 8-CHANNEL SATURATED SINK DRIVERS The products described here are manufactured under one or more U.S. patents or U.S. patents pending. 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 responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000