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SLTS034A Datasheet(PDF) 1 Page - Texas Instruments |
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SLTS034A Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 10 page  For technical support and more information, see inside back cover or visit www.ti.com/powertrends PT6500 Series 8 Amp 5V/3.3V Input Adjustable ISR with Short-Circuit Protection SLTS034A (Revised 8/23/2000) • 8A Single Device Power • Up to 90% efficiency (PT6501) • Small SIP Footprint • Standby Function • Internal Short Circuit Protection • Over-Temperature Protection • Adjustable Output Voltage The PT6500 series is a high perfor- mance +3.1 to 6V input, 8 Amp, 14-Pin SIP (Single In-line-Package) Inte- grated Switching Regulator (ISR). This ISR allows the integration of high-speed, low-voltage Pentium pro- cessors and their support logic into existing 3.3V or 5V systems without redesigning the central power supply. The PT6502 (1.5V) provides the low terminating voltages required by BTL/ Futurebus+, CTT, HP, and GTL Buses from existing 3.3V or 5V power rails. Ordering Information PT6501! = 3.3 Volts PT6502! = 1.5 Volts PT6503! = 2.5 Volts PT6504! = 3.6 Volts PT6505! = 1.2 Volts PT6506! = 1.8 Volts PT6507! = 1.3 Volts PT6508! = 1.7 Volts PT Series Suffix (PT1234X) Case/Pin Heat Tab Configuration Configuration None Side Vertical Through-Hole NR Horizontal Through-Hole AG Horizontal Surface Mount CB Standard Application C1 = Required 330µF electrolytic * C2 = Required 330µF electrolytic * * See footnotes PT6500 11,12,13 14 7,8,9,10 4,5,6 3 1 C 2 + C 1 + LOAD V oADJ V IN STBY COM V OUT COM V o SENSE Q1 Pin-Out Information Pin Function 1 Remote Sense 2 Do not connect 3 STBY*-Standby 4Vin 5Vin 6Vin 7 GND 8 GND 9 GND 10 GND 11 Vout 12 Vout 13 Vout 14 Vout Adjust Pkg Style 400 †3.3V Input Bus Capable † † † † † Specifications Characteristics PT6500 SERIES (T a=25 °C unless noted) Symbols Conditions Min Typ Max Units Output Current Io Over Vin range 0.1 (1) — 8.0 A Current Limit Icl Vin=+5V — 13.0 20.0 A Short Circuit Current Isc Vin=+5V — 15.0 — Apk Input Voltage Range Vin 0.1 ≤ Io≤ 8.0A Vo=2.5V and 3.3V 4.5 — 6 Vo≤1.8V 3.1 — 6 V Vo=3.6V 4.8 — 6 Output Voltage Tolerance ∆Vo Vin = +5V, Io = 8.0A Vo-0.1 — Vo+0.1 V Ta = 0 to +70°C Line Regulation Regline 4.5V ≤ Vin ≤ 6.0V, Io = 8.0A Vo ≥3.3V — ±7 ±17 3.1V ≤ Vin ≤ 6.0V, Io = 8.0A Vo ≤1.8V — ±3 ±8 mV 4.5V ≤ Vin ≤ 6.0V, Io = 8.0A Vo =2.5V ±7 ±13 Load Regulation Regload 0.1 ≤ Io ≤ 8.0A, Vin = +5V Vo ≥3.3V — ±17 ±33 Vo ≤1.8V — ±12 ±23 mV Vo =2.5V ±13 ±25 Vo Ripple/Noise Vn Vin = +5V, Io = 8.0 Amp — 50 — mVpp Transient Response ttr Io step from 4A to 8.0A — 100 — µsec with Co = 330µF Vos Vo over/undershoot — 150 — mV Efficiency η Vin = +5V, Io = 3.0A Vo ≥3.3V — 90 — Vo =2.5V — 85 — Vo =1.8V — 78 — % Vo =1.5V — 76 — Vo =1.2V — 67 — Vin = +5V, Io = 8.0A Vo ≥3.3V — 83 — Vo =2.5V — 76 — Vo =1.8V — 74 — % Vo =1.5V — 68 — Vo =1.2V — 65 — Switching Frequency ƒo Over Vin and Io ranges 475 600 725 kHz Absolute Maximum Ta –40 (3) —+85 (4) °C Operating Temperature Range Thermal Resistance θ ja Free Air Convection (40-60LFM) — 15 — °C/W Continued |
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