UC1711 UC3711 Dual Ultra High-Speed FET Driver FEATURES BLOCK DIAGRAM • 25ns Rise and Fall into 1000pF • 15ns Propagation Delay 7.5V REG • 1.5A Source or Sink Output Drive 6 VCC 7 A Out 5 B Out 3 Gnd 3k • Operation with 5V to 35V Supply 2.5k • High-Speed Schottky NPN Process • 8-PIN MINIDIP Package AIN 2 CONNECTION DIAGRAM 2.5k DIL-8 (Top View) J or N Package BIN 3k 4 UDG-99078 DESCRIPTION ABSOLUTE MAXIMUM RATINGS The UC1711 family of FET drivers are made with an all-NPN Schottky process in order to optimize switching speed, temperature stability, and radiation resistance. The cost for these benefits is a quiescent supply current which varies with both output state and supply voltage. For lower power requirements, refer to the the UC1709 family which is both pin compatible with, and functionally equivalent to the UC1711. Input Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Output Current (Source or Sink) Steady State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 500mA Peak Transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 1.5A Maximum Forced Voltage . . . . . . . . . . . . . . . . . . . . -0.3V to 7V Maximum Forced Current . . . . . . . . . . . . . . . . . . . . . . . ± 10mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Operating Junction Temperature . . . . . . . . . . –55°C to +150°C Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C These devices implement inverting logic with TTL compatible inputs, and output stages which will either source, or sink in excess of 1.5A of load current with minimal cross-conduction charge. Due to their monolithic construction, the channels are well matched and can be paralleled for doubled output current capability. Note 1: Unless otherwise indicated, voltages are reference to ground and currents are positive into, negative out of, the specified terminals. All reliability information for this device has been gathered at an ambient air temperature of 125°C, and a supply voltage of 25V. ORDERING INFORMATION UC1711J UC3711J UC3711N 03/99 TEMPERATURE RANGE –55°C to +125°C 0°C to +70°C 0°C to +70°C PACKAGE Ceramic DIP Ceramic DIP Plastic DIP Note 2: Consult Unitrode databook for information regarding thermal specifications and limitations of packages. UC1711 UC3711 ELECTRICAL CHARACTERISTICS: Unless otherwise stated, VCC = 15V. TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input Supply Supply Current (Note 3) Both inputs = 0V; VCC = 15V 11 15 mA Both inputs = 5V; VCC= 15V 20 27 mA Both inputs = 0V; VCC= 35V 15 20 mA Both inputs = 5V; VCC= 35V 41 56 mA 0.8 V Logic Inputs Logic 0 Input Voltage Logic 1 Input Voltage Input Current 2.2 VIN = 0V -5.0 V -2.7 mA VIN = 5V 0.5 2.0 mA ISOURCE = 20mA, below VCC 1.5 2.0 V ISOURCE = 200mA, below VCC 2.0 3.0 V ISINK = 20mA .25 0.4 V ISINK = 200mA 0.4 1.0 V Output Stages Output High Level Output Low Level Switching Characteristics (Note 4) Rise Time Delay, TPLH Fall Time Delay, TPHL Rise Time, TLH Fall Time, THL Total Supply Current CLOAD = 0 10 40 ns CLOAD = 1000pF, (Note 5) 15 50 ns CLOAD= 2200pF 20 55 ns CLOAD = 0 3 20 ns CLOAD = 1000pf, (Note 5) 5 20 ns CLOAD = 2200pF 5 20 ns CLOAD = 0, (Note 5) 12 25 ns CLOAD = 1000pF, (Note 5) 25 40 ns CLOAD = 2200pF 40 55 ns CLOAD = 0, (Note 5) 7 15 ns CLOAD = 1000pF, (Note 5) 25 40 ns CLOAD= 2200pF 40 55 ns CLOAD = 0 17 23 mA CLOAD = 2200pF 29 35 mA Freq = 200kHz, 50% Duty-cycle Both Channels Switching Note 3: Supply currents at other input supply votages can be calculated by extrapolating the 15V and 35V supply currents. The impedance of the chip at the VCC pin is linear for supply voltages from 8V to 35V, the approximate value of this impedance is 4.3k for both inputs low, 0.94k for both inputs high, and 1.54k for one input high and one low. Note 4: Switching test conditions are, VCC = 15V, Input voltage waveform levels are 0V and 5V, with transition times of <3ns. The timing terms are defined as : TPHL Propagation delay 50% VIN to 90% VOUT; TPLH Propogation delay 50% VIN to 10% VOUT; THL 90% VOUT to 10% VOUT; TLH 10% VOUT to 90% VOUT. Note 5: This specification not tested in production.Unless otherwise stated specifications hold for TA = 0 to 70°C for the UC3711, and TA = -55 to 125°C for the UC1711, VCC = 15V. TA = TJ. UNITRODE CORPORATION 7 CONTINENTAL BLVD. • MERRIMACK, NH 03054 TEL. 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