UC2708DWG4

UC1708 UC2708 UC3708 www.ti.com SLUS171C – MARCH 1997 – REVISED SEPTEMBER 2007 DUAL NON-INVERTING POWER DRIVER • • • • • • FEATURES 1 • • • • • 3.0A Peak Current Totem Pole Output 5 to 35V Operation 25ns Rise and Fall Times 25ns Propagation Delays Thermal Shutdown and Under-Voltage Protection High-Speed, Power MOSFET Compatible Efficient High Frequency Operation Low Cross-Conduction Current Spike Enable and Shutdown Functions Wide Input Voltage Range ESD Protection to 2kV DESCRIPTION The UC1708 family of power drivers is made with a high-speed, high-voltage, Schottky process to interface control functions and high-power switching devices – particularly power MOSFETs. Operating over a 5 V to 35 V supply range, these devices contain two independent channels. The A and B inputs are compatible with TTL and CMOS logic families, but can withstand input voltages as high as VIN. Each output can source or sink up to 3 A as long as power dissipation limits are not exceeded. Although each output can be activated independently with its own inputs, they can be forced low in common through the action of either a digital high signal at the Shutdown terminal or by forcing the Enable terminal low. The Shutdown terminal will only force the outputs low, it will not effect the behavior of the rest of the device. The Enable terminal effectively places the device in under-voltage lockout, reducing power consumption by as much as 90%. During under-voltage and disable (Enable terminal forced low) conditions, the outputs are held in a self-biasing, low-voltage, state. The UC3708 and UC2708 are available in plastic 8-pin MINI DIP and 16-pin bat-wing DIP packages for commercial operation over a 0°C to 70°C temperature range and industrial temperature range of –25°C to 85°C respectively. For operation over a –55°C to 125°C temperature range, the UC1708 is available in hermetically sealed 8-pin MINI CDIP, 16 pin CDIP and 20 pin CLCC packages. Surface mount devices are also available. BLOCK DIAGRAM VIN Enable 5.6 V Reg Internal Bias Logic Gnd Thermal Shutdown Output A Pwr Gnd A Input A Input B Output B Shutdown Pwr Gnd B NOTE: Shutdown feature is not available in J or N packages only. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1997–2007, Texas Instruments Incorporated UC1708 UC2708 UC3708 www.ti.com SLUS171C – MARCH 1997 – REVISED SEPTEMBER 2007 CONNECTION DIAGRAMS DIL-8 (Top View) J Or N Package SOIC-16 (Top View) DW Package Pwr Gnd A NC Input A Gnd Input B NC Output A VIN Input A Output A Enable VIN Logic Gnd NC NC NC Shutdown VIN Output B Output B Input B NC DIL-16 (Top View) JE Or NE Package Input A Output A Enable VIN ENABLE 4 2 1 PWR GND A 3 20 19 18 VIN Logic Gnd Logic Gnd LOGIC GND 5 17 NC Logic Gnd Logic Gnd NC 6 16 NC VIN NC 7 15 NC Shutdown 14 VIN Submit Documentation Feedback 13 PWR GND B Note: In JE package, Pin 4 is Logic Ground. Pins 5, 12, and 13 are no connect. 10 11 12 NC Pwr Gnd B 9 OUTPUT B 8 NC NC Output B SHUTDOWN INPUT B Input B 2 NC Pwr Gnd A INPUT A CLCC-20 (Top View) L Package NC NC Pwr Gnd B OUTPUT A Enable Copyright © 1997–2007, Texas Instruments Incorporated Product Folder Link(s): UC1708 UC2708 UC3708 UC1708 UC2708 UC3708 www.ti.com SLUS171C – MARCH 1997 – REVISED SEPTEMBER 2007 ABSOLUTE MAXIMUM RATINGS (1) VALUE UNIT Supply Voltage, VIN Output Current (Each Output, Source or Sink) V A 3 A –0.3 to (VIN + 0.3) V –0.3 to 6.2 V –0.3 to (VIN + 0.3) V Peak Transient Ouput Voltage Enable and Shutdown Inputs A and B Inputs Operating Junction Temperature 35 0.5 Steady-State 150 °C –65 to 150 °C 300 °C (2) Storage Temperature Range Lead Temperature (Soldering, 10 Seconds) (1) (2) All voltages are with respect to Logic Gnd pin. All currents are positive into, negative out of, device terminals.r Consult Unitrode Integrated Circuits databook for information regarding thermal specifications and limitations of packages. ELECTRICAL CHARACTERISTICS Unless otherwise stated, VIN=10V to 35V, and these specifications apply for: –55°C