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| For assistance or to order, call (800) 531-5782 PT7700 Series 15 AMP HIGH-PERFORMANCE "BIG HAMMER" PROGRAMMABLE ISR The PT7700 is a new series of highperformance, 15 Amp Integrated Switching Regulators (ISRs) housed in a 27-pin SIP package. The 15A capability allows easy integration of the latest high-speed, lowvoltage Ps and bus drivers into existing 5V systems. The PT7700 series has been designed to work in parallel with one or more of the PT7749 - 15A current boosters for increased Iout in increments of 15A. SLTS077 Revised 5/31/00 Two products are offered in the series with different output voltage ranges that are easily programmed with a 4 bit input compatible with Intel's Pentium Pro Processor. A differential remote sense is also provided which automatically compensates for any voltage drop from the ISR to the load. An input filter and 1200F of output capacitance are required for proper operation. Features * Single-Device: +5V input * 4-bit Programmable: 2V to 3.5V@15A or 1.3V to 2V @ 15A output * High Efficiency * Input Voltage Range: 4.5V to 5.5V * Differential Remote Sense * 27-pin SIP Package: V = 1.0"(H) x 3"(L) x 0.55"(W) H = 0.55"(H) x 3"(L) x 1.5"(W) Standard Application PROGRAMMING PINS VID0 VID1 VID2 VID3 Cin = Required 330F electrolytic (x4) Cout = Required 330F electrolytic (x4) L1 = Required 1H input choke REMOTE SENSE (+) 4321 26 Ordering Information PT7701 = 2 to 3.5 Volts PT7702 = 1.3 to 2 Volts N = Vertical through-hole A = Horizontal through-hole C = Horizontal surface-mount VIN L1 7 - 11 1H + + + + 27 PT7700 13 - 19 5 12 20 - 25 VOUT CIN SYNC OUT GND STBY* COUT + + + + LOAD Programming Information VID3 VID2 VID1 VID0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 Note: 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 GND REMOTE SENSE (-) PT7701 PT7702 Vout Vout 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 1.30V 1.35V 1.40V 1.45V 1.50V 1.55V 1.60V 1.65V 1.70V 1.75V 1.80V 1.85V 1.90V 1.95V 2.00V 2.05V Pin-Out Information Pin 1 2 3 4 5 6 7 8 9 Function VID0 VID1 VID2 VID3 STBY* - Stand-by Vin Vin Vin Vin * Parallelable with PT7749 15A "Current Boosters" Pin 10 11 12 13 14 15 16 17 18 Function Vin Vin Remote Sense Gnd GND GND GND GND GND GND Pin 19 20 21 22 23 24 25 26 27 Function GND Vout Vout Vout Vout Vout Vout Remote Sense Vout Sync Out Specifications Characteristics (T A = 25C unless noted) Output Current Input Voltage Range Static Voltage Tolerance Line Regulation Load Regulation Vo Ripple/Noise pk-pk Transient Response with Cout = 1200F Efficiency Symbols Io Vin Vo Regline Regload Vn ttr Vos For STBY* pin; open = output enabled; ground = output disabled. Logic 0 = Pin 12 (remote sense gnd) potential Logic 1 = Open circuit (no pull-up resistors) PT7700 SERIES Conditions 4.5V Vin 5.5V 0.1A Io 15A Vin = +5V, Io = 15A 0C Ta +55C 4.5V Vin 5.5V, Io = 15A Vin = +5V, 0.1 Io 15A Vin = +5V, Io = 15A Io step between 7.5A and 15A Vo over/undershoot Vin = +5V, Io = 10A Vo Vo Vo Vo Vo = 3.3V = 2.9V = 2.5V = 1.8V = 1.5V Min 0.1 (1) 4.5 (3) Vo- 0.05 -- -- -- -- -- -- -- -- -- -- 650 0 -40 -- 0 Typ -- -- -- 10 10 50 100 200 89 87 85 79 77 700 -- -- TBD -- Max 15 (2) 5.5 Vo+0.05 -- -- -- -- -- -- -- -- -- -- 750 +55 +125 -- 95 Units ADC VDC VDC mV mV mV Sec mV % % % % % kHz C C grams % Switching Frequency Operating Temperature Storage Temperature Weight Relative Humidity o Ta Ts -- -- 4.5V Vin 5.5V 0.1A Io 15A Forced Air Flow = 200 LFM Over Vin and Io Ranges -- -- Non-condensing (1) ISR will operate down to no load with reduced specifications Please note that this product is not short-circuit protected. (2) The PT7700 series can be easily paralleled with one or more of the PT7749 slave modules to provide increased output current in increments of 15A. Please contact Power Trends for the appropriate application note. (3) The minimum input voltage is 4.5V or Vout+1.2V, whichever is greater. Output Capacitors: The PT7700 series requires A minimum output capacitance of 1200F for proper operation. To reduce ESR, Power Trends recommends using four 330F electrolytic capacitors in parallel. Input Filter: An input filter is required for all applications. The input inductor must be sized to handle 15ADC with a typical value of 1H. The input capacitance must be rated for 14Arms of ripple current. Power Trends recommends using four Sanyo OSCON style capacitors with a 3.5Arms ripple current rating in parallel (p/n 6SA330M). Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 USA (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 2000, Texas Instruments Incorporated |
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