UDK2559B

2559 UDx2559LB 1 16 PROTECTED QUAD POWER DRIVER Providing improved output current limiting, the UDK, UDN, and UDQ2559B, EB, and LB quad power drivers combine AND logic gates and high-current bipolar outputs with complete output protection. Each of the four outputs will sink 700 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. IN 4 IN3 ENABLE GROUND GROUND V CC IN 2 IN 1 Data Sheet 29317.14B UDx2559B OUT4 K OUT3 GROUND GROUND OUT2 K OUT1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 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 shortcircuit 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, these devices will tolerate short circuits on all outputs, simultaneously. 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. The suffix ‘B’ devices are 16-pin power DIPs, the suffix ‘EB’ devices are 28-lead power PLCCs and suffix ‘LB’ devices are 16-lead power SOICs for surface-mount applications. All three packages are of batwing construction to provide for maximum package power dissipation. Dwg. PP-017-1 ABSOLUTE MAXIMUM RATINGS at TA = 25°C 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 *Outputs are peak current limited at approximately 1.0 A per driver. See Circuit Description and Application for further information. FEATURES s s s s s s s 700 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 UDQ2543B/EB and UDK2549B/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., UDK2559LB . 2559 PROTECTED QUAD POWER DRIVER FUNCTIONAL BLOCK DIAGRAM (1 of 4 Channels) V CC K ENABLE IN N THERMAL LIMIT OUTN