Data Sheet 29317.8 2549 PROTECTED QUAD POWER DRIVER Providing improved output current limiting, the UDK/UDN/ UDQ2549B and UDK/UDN/UDQ2549EB quad power drivers combine AND logic gates and high-current bipolar outputs with complete output protection. Each of the four outputs will sink 600 mA in the on state. The outputs have a minimum breakdown voltage (load dump) of 60 V and a sustaining voltage of 40 V. The inputs are compatible with TTL and 5 V CMOS logic systems. UDx2549B (DIP) OUT4 1 16 IN 4 K 2 15 IN3 OUT3 3 14 ENABLE GROUND 4 13 GROUND GROUND 5 12 GROUND OUT2 6 11 V CC K 7 10 IN 2 OUT1 8 9 IN 1 T C Over-current protection for each channel has been designed into these devices and is activated at approximately 1 A. It protects each output from short circuits with supply voltages up to 25 V. When an output current trip point is reached, that output stage is driven linearly resulting in a reduced output current level. If an over-current or short circuit condition continues, the thermal limiting circuits will first sense the rise in junction temperature and then the rise in chip temperature, further decreasing the output current. Under worst-case conditions, the six devices in this family will tolerate short-circuits on all outputs, simultaneously. U D O y R l P n Dwg. PP-017-1 O D E ce These devices can be used to drive various loads including incandescent lamps (without warming or limiting resistors) or inductive loads such as relays, solenoids, or dc stepping motors. ABSOLUTE MAXIMUM RATINGS at TA = 25°C U n e IN r e T f N Re Output Voltage, VOUT . . . . . . . . . . . . . 60 V Over-Current Protected Output Voltage, VOUT . . . . . . . . . . . . . . . . . . . . . . . 25 V Output Current, IOUT . . . . . . . . . . . . . 1.0 A* Supply Voltage, VCC . . . . . . . . . . . . . . 7.0 V Input Voltage, VIN or VEN . . . . . . . . . . 7.0 V Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . See Graph Operating Temperature Range, TA Prefix ‘UDK’ . . . . . . . -40°C to +125°C Prefix ‘UDN’ . . . . . . . . -20°C to +85°C Prefix ‘UDQ’ . . . . . . . . -40°C to +85°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -55°C to +150°C O C or S I D The suffix ‘B’ devices are 16-pin power DIPs while the suffix ‘EB’ devices are 28-lead power PLCCs for surface-mount applications. Both packages are of batwing construction to provide for maximum package power dissipation. F *Outputs are peak current limited at approximately 1.0 A per driver. See Circuit Description and Applications for further information. FEATURES ■ ■ ■ ■ ■ ■ ■ 600 mA Output Current per Channel Independent Over-Current Protection for Each Driver Thermal Protection for Device and Each Driver Low Output-Saturation Voltage Integral Output Flyback Diodes TTL and 5 V CMOS Compatible Inputs Pin-Compatible With UDN2543B/EB Always order by complete part number: a prefix to indicate operating temperature range + the basic four-digit part number + a suffix to indicate package style, e.g., UDK2549EB . 2549 PROTECTED QUAD POWER DRIVER FUNCTIONAL BLOCK DIAGRAM (1 of 4 Channels) K V CC OUTN ENABLE IN N THERMAL LIMIT <<1 Ω Dwg. FP-041 NC 25 6 24 7 23 8 22 9 21 10 20 11 19 GROUND GROUND VCC 13 14 15 16 17 18 K OUT 4 NO CONNECTION IN 4 IN 3 SUPPLY NC 12 GROUND 5 OUT 3 GROUND Dwg. PP-019-1 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS ENABLE 26 IN 2 27 IN 1 10 28 NO CONNECTION 1 OUT1 2 K 3 4 OUT2 UDx2549EB (PLCC) 8 R θJT = 6°C/W 6 4 SUFFIX 'EB', R θJA = 36°C/W 2 SUFFIX 'B', R θJA = 43°C/W 0 25 50 75 100 TEMPERATURE IN °C 125 150 Dwg. GP-004-1A 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1991, 2003 Allegro MicroSystems, Inc. 2549 PROTECTED QUAD POWER DRIVER ELECTRICAL CHARACTERISTICS at TA = +25°C (prefix ‘UDN’) or over operating temperature range (prefix ‘UDK’ or ‘UDQ’), VCC = 4.75 V to 5.25 V Limits Characteristic Output Leakage Current Symbol ICEX Test Conditions Min. Typ. Max. Units VOUT = 60 V, VIN = 0.8 V, VEN = 2.0 V — <1.0 100 µA VOUT = 60 V, VIN = 2.0 V, VEN = 0.8 V — <1.0 100 µA Output Sustaining Voltage VOUT(SUS) IOUT = 100 mA, VIN = VEN = 0.8 V 40 — — V Output Saturation Voltage VOUT(SAT) IOUT = 100 mA — — 200 mV IOUT = 400 mA — — 400 mV IOUT = 600 mA — — 600 mV — 1.0 — A Over-Current Trip Input Voltage Input Current Total Supply Current ITRIP Logic 1 VIN(1) or VEN(1) 2.0 — — V Logic 0 VIN(0) or VEN(0) — — 0.8 V Logic 1 VIN(1) or VEN(1) = 2.0 V — — 10 µA Logic 0 VIN(0) or VEN(0) = 0.8 V — — -10 µA IOUT = 600 mA, VIN* = VEN = 2.0 V — — 65 mA All Outputs OFF — — 15 mA ICC Clamp Diode Forward Voltage VF IF = 1.0 A — — 1.7 V Clamp Diode Leakage Current IR VR = 60 V, D1 + D2 or D3 + D4 — — 50 µA Thermal Limit TJ — 165 — °C Typical Data is for design information only. Negative current is defined as coming out of (sourcing) the specified terminal. As used here, -100 is defined as greater than +10 (absolute magnitude convention) and the minimum is implicitly zero. * All inputs simultaneously, all other tests are performed with each input tested separately. www.allegromicro.com 2549 PROTECTED QUAD POWER DRIVER TYPICAL OUTPUT CHARACTERISTIC OUTPUT VOLTAGE, V OUT J INCANDESCENT LAMP DRIVER High incandescent lamp turn-ON/in-rush currents can contribute to poor lamp reliability and destroy semiconductor lamp drivers. Warming or current-limiting resistors protect both driver and lamp but use significant power either when the lamp is OFF or when the lamp is ON, respectively. Lamps with steady-state current ratings up to 600 mA can be driven by these devices without the need for warming (parallel) or current-limiting (series) resistors. NOT TO SCALE TJ < 150°C T CIRCUIT DESCRIPTION AND APPLICATION = 165°C JUNCTION TEMP. LIMIT THERMAL GRADIENT SENSING I TRIP V OUT(SAT) OUTPUT CURRENT, I OUT Dwg. GP-013 TYPICAL OUTPUT BEHAVIOR NORMAL LAMP IN-RUSH CURRENT INDUCTIVE LOAD DRIVER Bifilar (unipolar) stepper motors, relays, or solenoids can be driven directly. The internal flyback diodes prevent damage to the output transistors by suppressing the high-voltage spikes which occur when turning OFF an inductive load. For rapid current decay (fast turn-OFF speeds), the use of Zener diodes will raise the flyback voltage and improve performance. However, the peak voltage must not exceed the specified minimum sustaining voltage (VSUPPLY + VZ + VF ≤ VOUT(SUS)). FAULT CONDITIONS In the event of a shorted load, the load current will attempt to increase. As described above, the drive current to the affected output stage is reduced, causing the output stage to go linear, limiting the peak output current to approximately 1 A. As the power dissipation of that output stage increases, a thermal gradient sensing circuit will become operational, further decreasing the drive current to the affected output stage and reducing the output current to a value dependent on supply voltage and load resistance. LAMP CURRENT NOT TO SCALE THERMAL GRADIENT SENSING CURRENT LIMIT ITRIP 0 When an incandescent lamp is initially turned ON, the cold filament is at minimum resistance and would normally allow a 10x to 12x in-rush current. With the these drivers, during turn-ON, the high in-rush current is sensed by the internal low-value sense resistor. Drive current to the output stage is then diverted by the shunting transistor, and the load current is momentarily limited to approximately 1.0 A. During this short transition period, the output current is reduced to a value dependent on supply voltage and filament resistance. During lamp warmup, the filament resistance increases to its maximum value, the output stage goes into saturation and applies maximum rated voltage to the lamp. Continuous or multiple overload conditions causing the chip temperature to reach approximately 165°C will result in an additional reduction in output current to maintain a safe level. TIME Dwg. WP-008 If the fault condition is corrected, the output stage will return to its normal saturated condition. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2549 PROTECTED QUAD POWER DRIVER UDN2549B and UDQ2549B Dimensions in Inches (controlling dimensions) 16 0.020 0.008 9 NOTE 4 0.430 MAX 0.280 0.240 0.300 BSC 1 0.070 0.045 0.100 0.775 0.735 8 0.005 BSC MIN 0.210 MAX 0.015 0.150 0.115 MIN 0.022 0.014 Dwg. MA-001-17A in Dimensions in Millimeters (for reference only) 16 0.508 0.204 9 NOTE 4 10.92 MAX 7.11 6.10 7.62 BSC 1 1.77 1.15 2.54 19.68 18.67 8 0.13 BSC MIN 5.33 MAX 0.39 3.81 2.93 MIN 0.558 0.356 NOTES: 1. 2. 3. 4. Exact body and lead configuration at vendor’s option within limits shown. Lead spacing tolerance is non-cumulative Lead thickness is measured at seating plane or below. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece. www.allegromicro.com Dwg. MA-001-17A mm 2549 PROTECTED QUAD POWER DRIVER UDN2549EB and UDQ2549EB Dimensions in Inches (controlling dimensions) 18 0.013 0.021 12 19 0.219 0.191 11 0.026 0.032 0.456 0.450 INDEX AREA 0.495 0.485 0.050 BSC 0.219 0.191 25 5 26 28 0.020 1 4 0.456 0.450 0.495 0.485 MIN 0.165 0.180 Dwg. MA-005-28A in Dimensions in Millimeters (for reference only) 18 0.331 0.533 12 19 5.56 4.85 11 0.812 0.661 11.58 11.43 12.57 12.32 1.27 INDEX AREA BSC 5.56 4.85 25 5 26 0.51 MIN 4.57 4.20 28 1 4 11.582 11.430 12.57 12.32 Dwg. MA-005-28A mm NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is non-cumulative 3. Webbed lead frame. Leads 5 through 11 and 19 through 25 are internally one piece. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2549 PROTECTED QUAD POWER DRIVER 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. www.allegromicro.com