For assistance or to order, call Application Notes Mechanical Outline Product Selector Guide (800) 531-5782 PT7600 Series 10 AMP PROGRAMMABLE INTEGRATED SWITCHING REGULATOR Features • Single-Device: +5V input • 5-bit Programmable: 1.3V to 3.5V@10A • High Efficiency • Input Voltage Range: 4.5V to 5.5V • Differential Remote Sense • 27-pin SIP Package The PT7600 is a new series of highperformance, 10 Amp Integrated Switching Revised 5/15/98 Regulators (ISRs) housed in a 27-pin SIP package. The 10A capability allows easy integration of the latest high-speed, low-voltage µPs and bus drivers into existing 5V systems. The output voltage of the PT7600 is easily programmed with a 5 bit input compatible with Intel’s Pentium II Processor from 1.3V to 3.5V. A differential remote sense is also provided which automatically compensates for any voltage drop from the ISR to the load. 1200µF of output capacitance are required for proper operation. Pin-Out Information Standard Application PROGRAMMING PINS VID0 VID1 VID2 VID3 VID4 VIN REMOTE SENSE (+) 6 4 3 2 1 L1 1µH CIN + 26 PT7600 7 - 11 27 13 - 19 5 VOUT 20 - 25 12 COUT + LOAD SYNC OUT GND STBY* GND Pin Function Pin Function Pin Function 1 VID0 10 Vin 19 GND 2 3 VID1 VID2 11 12 Vin Remote Sense Gnd 20 21 Vout Vout 4 5 VID3 STBY* - Stand-by 13 14 GND GND 22 23 Vout Vout 6 7 VID4 Vin 15 16 GND GND 24 25 Vout Vout 8 9 Vin Vin 17 18 GND GND 26 27 Do not connect Remote Sense Vout REMOTE SENSE (-) For STBY* pin; open = output enabled; ground = output disabled. C in = Required 1200µF electrolytic C out = Required 1200µF electrolytic L1 = Optional 1µH input choke Specifications PT7600 SERIES Characteristics (Ta = 25°C unless noted) Symbols Conditions Min Typ Max Units Output Current Io Ta = +60°C, 200 LFM, pkg N Ta = +25°C, natural convection 0.1 * 0.1 * — — 10 10 A A Input Voltage Range Vin 0.1A ≤ Io ≤ 10A 4.5 ** — 5.5 V Output Voltage Tolerance ∆Vo Vin = +5V, Io = 10A 0°C ≤ Ta ≤ +55°C Vo-0.03 — Vo+0.03 V Line Regulation Regline 4.5V ≤ V in ≤ 5.5V, Io = 10A — ±10 — mV Load Regulation Regload Vin = +5V, 0.1 ≤ Io ≤ 10A — ±10 — mV Vo Ripple/Noise pk-pk Vn Vin = +5V, I o = 10A — 50 — mV Transient Response with Cout = 1200µF ttr Vos Io step between 5A and 10A Vo over/undershoot — — 100 200 — — µSec mV Efficiency η Vin = +5V, Io = 10A — — — — — 80 78 75 69 65 — — — — — % % % % % Switching Frequency ƒo 4.5V ≤ V in ≤ 5.5V 0.1A ≤ Io ≤ 10A 650 700 750 kHz Absolute Maximum Operating Temperature Range Ta 0 — +85 °C Recommended Operating Temperature Range Ta Forced Air Flow = 200 LFM Over Vin and Io Ranges 0 — +65*** °C Storage Temperature Ts Vo Vo Vo Vo Vo = 3.3V = 2.9V = 2.5V = 1.8V = 1.5V — -40 — +125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — 500 — G’s Mechanical Vibration Per Mil-STD-883D, Method 2007.2, 20-2000 Hz, Soldered in a PC board — 10 — G’s Vertical/Horizontal — 31/41 — grams Weight — * ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected. ** The minimum input voltage is 4.5V or Vout+1.2V, whichever is greater. *** See SOA curves. Output Capacitors: The PT7600 series requires a minimum output capacitance of 1200µF for proper operation. Do not use Oscon type capacitors.The maximum allowable output capacitance is 7,500µF. See Capacitor Application Note. Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 10ADC with a typical value of 1µH. The input capacitance must be rated for a minimum of 1.0 Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. 36 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com Programming Information VID3 VID2 VID1 VID0 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 Series Ordering Information PT7601❏ ❏ = 1.3 to 3.5 Volts VID4=1 VID4=0 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 PT7600 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 (For dimensions and PC board layout, see Package Styles 800 & 810.) PT Series Suffix (PT1234X) Case/Pin Configuration Vertical Through-Hole Horizontal Through-Hole Horizontal Surface Mount N A C Logic 0 = Pin 12 (remote sense gnd) potential Logic 1 = Open circuit (no pull-up resistors) C H A R A C T E R I S T I C D A T A PT7601, 3.3 VDC Safe Operating Area Curve (@Vin=+5V) Efficiency vs Output Current 90 100 80 90 Airflow 70 Nat Conv 60 60LFM 100LFM 50 200LFM Efficiency - % Ambient Temperature (°C) See Note 1) 40 80 Vin 4.5V 70 5.0V 5.5V 60 30 50 20 0 2 4 6 8 10 40 0 2 lout-(Amps) 4 6 8 10 Iout-(Amps) Ripple vs Output Current 40 35 Ripple-(mV) 30 Vin 25 5.5V 20 5.0V 4.5V 15 10 5 0 0 2 4 6 8 10 Iout-(Amps) Power Dissipation vs Output Current 9 8 PD-(Watts) 7 Vin 6 5.5V 5.0V 5 4.5V 4 3 2 1 0 0 2 4 6 8 10 Iout-(Amps) Note 1: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures. Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http:// www.powertrends.com 37 DATA SHEETS 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 (800) 531-5782 5V5V to Bus 3.x Converters Products 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 For assistance or to order, call 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 acknowledgement, 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. 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