PT5100 Series 1-A Positive Step-down Integrated Switching Regulator SLTS028B (Revised 11/8/2001) Features • 90%+ Efficiency • Internal Short-Circuit Protection • Pin-Compatible with 3-Terminal Linear Regulators • Laser-Trimmed Output Voltage • Over-Temperature Protection • Small Footprint • Wide Input Range • 5-Pin Mount Option (Suffixes L & M) Description Ordering Information The PT5100 modules are a series of economical, easy-to-use 1-A positive step-down, Integrated Switching Regulators (ISRs). These ISRs are compatible with most TO-220 style linear regulators, and when employed as a linear replacement, provide significant benefits in both efficiency and power dissipation. They are recommended for use in a wide variety of on-board power regulation applications. These include computer, data storage, industrial controls, and battery powered equipment. Modules are laser-trimmed for optimal output voltage accuracy, and exhibit excellent line and load regulation. The PT5100 also features output current limiting and thermal shutdown protection. PT5101¨ PT5102¨ PT5103¨ PT5105¨ PT5107¨ PT5109¨ PT5110¨ PT5111¨ PT5112¨ = +5.0 Volts = +12.0 Volts = +3.3 Volts = +6.5 Volts = +15.0 Volts = +5.6 Volts = +9.0 Volts = +10.0 Volts = +8.0 Volts Package (EAD) PT Series Suffix (PT1234x ) Case/Pin Configuration Order Suffix Vertical Horizontal SMD Horizontal, 2-pin Tab SMD, 2-Pin Tab N A C M L Pin-Out Information Pin Package Code (EAD) (EAA) (EAC) (EAM) (EAL) Function 1 Vin 2 GND 3 Vout (Reference the applicable package code drawing for the dimensions and PC board layout) Standard Application +VIN 1 PT5100 2 C1 C2 1µF 100µF COM +VOUT 3 + L O A D COM C1 = Optional 1µF ceramic capacitor C2 = Required 100µF electrolytic For technical support and more information, see inside back cover or visit www.ti.com PT5100 Series 1-A Positive Step-down Integrated Switching Regulator Specifications (Unless otherwise stated, Ta =25°C, Vin =Vinmin, C out =100µF, and Io =Iomax) Characteristic Symbol Output Current Input Voltage Range Io Vin Set Point Voltage Tolerance Temperature Variation Line Regulation Load Regulation Total Output Voltage Variation Vo tol Regtemp Regline Regload ∆Votot Efficiency η Vo Ripple (pk-pk) Transient Response Current Limit Switching Frequency Vr ttr ∆Vtr Ilim ƒs External Output Capacitance Operating Temperature Range Thermal Resistance Cout Ta θja Storage Temperature Reliability Ts MTBF Mechanical Shock — Mechanical Vibration — Weight — Flammability — Notes: (1) (2) (3) (4) Conditions Min Over Vin range Over Io Range Vo =3.3V Vo =5.0V Vo >5.0V 0° ≤Ta ≤ +60°C, Io =Iomin Over Vin range Over Io range Includes set-point, line, load, 0° ≤Ta ≤ +60°C Vo = 15V Vo = 12V Vo = 10V Vo =5.0V Vo =3.3V 20MHz bandwidth 1A/µs load step, 50% to 100% Iomax Vo over/undershoot ∆Vo = –1% Over Vin range Vo ≥ 5.0V Vo ≤ 3.3V Over Vin range Free-air convection (40-60LFM) — Per Bellcore TR-332 50% stress, Ta =40°C, ground benign Per Mil-Std-883D, method 2002.3, 1mS, half-sine, mounted to a fixture Per Mil-Std-883D, Method 2007.2 20-2000Hz, soldered in PC board Suffixes N, A, & C Suffixes L & M Materials meet UL 94V-0 Vo =3.3V Vo =5.0V Vo ≥ 12V 0.1 (1) 9 9 Vo + 4 — — — — PT5100 SERIES Typ Max — — — — ±1 ±0.5 ±5 ±5 1.0 26 38 38 ±2 — ±10 ±10 Units A VDC %Vo %Vo mV mV — ±1.5 ±3 — — — — — — — — 1.2 500 575 100 –40 (2) — — — –40 95 94 92 90 82 2 100 ±5.0 2.6 650 725 — — 45 50 60 — — — — — — — 200 — — 800 875 — +85 (3) — — — +125 %Vo 11.3 — — 106 Hrs — 500 — G’s — 5 (4) — G’s — — 4.5 6.5 — — grams % %Vo µs %Vo A kHz µF °C °C/W °C The ISR will operate at no load with reduced specifications. For operation below 0°C, use a tantalum type capacitor for C2. See Thermal Derating curves. The tab pins on the 5-pin mount package types (suffixes L & M) must be soldered. For more information see the applicable package outline drawing. For technical support and more information, see inside back cover or visit www.ti.com Typical Characteristics PT5100 Series 1-A Positive Step-down Integrated Switching Regulator PT5103, 3.3 VDC PT5101, 5.0 VDC (See Note A) Efficiency vs Output Current PT5102, 12.0 VDC (See Note A) Efficiency vs Output Current Efficiency vs Output Current 90 100 (See Note A) 100 85 80 Vin 70 9.0V 12.0V 18.0V 60 Vin 75 9.0V 12.0V 18.0V 24.0V 30.0V 38.0V 70 65 60 55 Efficiency - % 90 80 Efficiency - % Efficiency - % 90 Vin 80 16.0V 20.0V 24.0V 30.0V 35.0V 38.0V 70 60 24.0V 50 26.0V 50 50 45 40 0 40 0 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 40 1 0 1 Iout-(Amps) Ripple vs Output Current 0.4 Ripple vs Output Current 60 120 50 100 40 80 26.0V 24.0V 18.0V 12.0V 9.0V 20 10 0.8 1 Ripple vs Output Current 250 200 Vin 38.0V 30.0V 24.0V 18.0V 60 12.0 V 9.0V 40 20 38.0V 35.0V 30.0V 24.0V 20.0V 16.0V 150 Ripple-(mV) Vin Ripple-(mV) 30 0.6 Iout-(Amps) Vin Ripple-(mV) 0.2 Iout-(Amps) 100 50 0 0 0 0 0.2 0.4 0.6 0.8 0.2 0.4 0.8 0 1 0 Iout-(Amps) Thermal Derating (Ta) 0.6 1 Thermal Derating (Ta) (See Note B) 60°C Iout-(Amps) Iout-(Amps) Iout-(Amps) 50°C 70°C 0.6 0 85°C 0.4 15 17 19 21 23 25 27 70°C 0.6 85°C 0.4 0.2 0 0 13 60°C 0.8 0.2 11 (See Note B) 50°C 0.2 9 1 1 0.8 0.4 0.8 Thermal Derating (Ta) (See Note B) 70°C 0.8 85°C 0.6 Iout-(Amps) 1 7 0.4 Iout-(Amps) 1 0.6 0.2 7 11 15 19 Vin-(Volts) 23 27 31 35 15 39 17 19 21 Vin-(Volts) Power Dissipation vs Output Current 25 27 29 31 33 35 37 Vin-(Volts) Power Dissipation vs Output Current 1.2 23 Power Dissipation vs Output Current 1. 8 2. 4 1. 6 1 2 1. 4 26.0V 24.0V 18.0V 0.6 12.0V 9.0V 0.4 38.0V 30.0V 24.0V 18.0V 12.0V 9.0V 1 0. 8 0. 6 0. 4 0.2 Vin Vin 1. 2 PD-(Watts) 0.8 PD-(Watts) PD-(Watts) Vin 1. 6 38 .0V 35 .0V 30 .0V 24 .0V 20 .0V 16 .0V 1. 2 0. 8 0. 4 0. 2 0 0 0 0 0.2 0.4 0.6 Iout-(Amps) 0.8 1 0 0. 2 0. 4 0. 6 0. 8 1 0 0. 2 Iout-(Amps) Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: Thermal derating graphs are developed in free-air convection cooling, which corresponds to approximately 40–60LFM of airflow. For technical support and more information, see inside back cover or visit www.ti.com 0. 4 0. 6 0. 8 Iout-(Amps) 1 39 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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