UDK2547

2547 PROTECTED QUAD POWER DRIVERS 2547 PROTECTED QUAD POWER DRIVERS Providing interface between low-level logic and power loads, the UDK/UDN/UDQ2547B and UDK/UDN/UDQ2547EB quad power drivers combine 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 and include internal pull-down resistors to ensure that the outputs remain OFF if the inputs are open-circuited. Over-current protection for each channel has been designed into these devices and is activated at approximately 1.3 A. It protects each output from short circuits with supply voltages up to 25 V. When a maximum driver output current is reached, that output drive is reduced linearly, maintaining a constant load current. If the over-current or short circuit condition continues, each channel has an independent thermal limit circuit which will sense the rise in junction temperature and turn OFF the individual channel that is at fault. Foldback circuitry decreases the output current if excessive voltage is present across the output and assists in keeping the device within its SOA (safe operating area). Each output also includes diagnostics for increased device protection. If any output is shorted or opened, the diagnostics can signal the controlling circuitry through a common FAULT pin. These devices can be used to drive various resistive loads including incandescent lamps (without warming or limiting resistors). With the addition of external output clamp diodes, they can be used to drive inductive loads such as relays, solenoids, or dc stepping motors. 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. Data Sheet 29317.4C UDx2547B FAULT OUT1 OUT2 GROUND GROUND OUT3 NO CONNECT. OUT4 1 2 3 4 5 6 7 8 V CC 16 15 14 13 12 11 10 9 IN 1 IN2 ENABLE GROUND GROUND SUPPLY IN 3 IN 4 Dwg. PP-018A ABSOLUTE MAXIMUM RATINGS at TA = 25°C Output Voltage, VOUT ............................ 60 V Over-Current Protected Output Voltage, VOUT ............................................... 25 V Output Current, IOUT .......................... 1.3 A* FAULT Output Voltage, VF ................... 40 V 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 current limited at approximately 1.3 A per driver and junction temperature limited if current in excess of 1.3 A is attempted. See Circuit Description and Application for further information. FEATURES s s s s s Output SOA Protection s Low Output-Saturation Voltage Diagnostic FAULT Output s TTL and 5 V CMOS Compatible Inputs Independent Over-Current Protection for Each Driver Independent Thermal Protection for Each Driver 600 mA Output Current per Channel 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., UDK2547EB . 2547 PROTECTED QUAD POWER DRIVERS UDx2547EB 10 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS OUT2 NO CONNECTION FAULT IN 1 R θJT = 6°C/W GROUND 5 NC 25 FAULT 6 7 24 23 22 21 20 19 NC NC VCC GROUND GROUND 6 4 SUFFIX 'EB', R θJA 8 = 36°C/W 9 10 GROUND 11 2 SUFFIX 'B', R θJA = 43°C/W 15 12 13 14 16 25 50 NO CONNECTION NO CONNECTION OUT 4 OUT 3 IN 4 IN 3 Dwg. GP-004-1A SUPPLY 75 100 TEMPERATURE IN °C 125 150 17 18 0 28 27 26 3 1 8 4 2 IN 2 ENABLE OUT1 Dwg. PP-019 FUNCTIONAL BLOCK DIAGRAM FAULT ABLE COMMON CONTROL ONE OF FOUR DRIVERS IN N THERMAL SHUTDOWN CURRENT LIMIT OUTN