For assistance or to order, call Application Notes Mechanical Outline Product Selector Guide (800) 531-5782 PT5100 Series 1 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR • 85% Efficiency • Internal Short-Circuit Protection • Pin-Compatible with 3-Terminal Linear Regulators • Laser-Trimmed Output Voltage • Over-Temperature Protection • Small Footprint • Wide Input Range The PT5100 Series is Power Trends’ line of economical, easy-to- Pin-Out Information Standard Application Vin 1 PT5100 C1 Pin Function 1 Vin 2 GND Vout 3 Vout 3 2 Pkg Style 100 C2 COM + COM Revised 5/15/98 use, 1 Amp positive step-down, 3-terminal Integrated Switching Regulators (ISRs) designed for pin compatibility with linear regulators. These ISRs can be used in a wide variety of on-board power regulation applications including computer, data storage, industrial controls, medical, and battery powered equipment. The series of ISRs has excellent line and load regulation and laser-trimmed output voltage. Ordering Information PT Series Suffix (PT1234X) PT5101¨ PT5102¨ PT5103¨ PT5105¨ PT5107¨ PT5109¨ PT5110¨ PT5111¨ PT5112¨ Case/Pin Configuration = + 5 Volts = + 12 Volts = + 3.3 Volts = + 6.5 Volts = + 15 Volts = + 5.6 Volts = + 9 Volts = + 10 Volts = + 8 Volts N A C Vertical Through-Hole Horizontal Through-Hole Horizontal Surface Mount C1 = Optional 1µF ceramic C2 = Required 100µF electrolytic Specifications PT5100 SERIES Characteristics (Ta =25°C unless noted) Symbols Conditions Min Typ Max Units Output Current Io Over Vin range 0.1* — 1.0 A Short Circuit Current Isc Vin = Vin min — 3.5 — Apk Input Voltage Range Vin 0.1 ≤ Io ≤ 1.0 A 9 9 16 19 — 26 38 38 38 V V V V Output Voltage Tolerance ∆Vo Over Vin Range, Io = 1.0 A Ta = 0°C to +60°C — ±1.5 ±3.0 %Vo Line Regulation Regline Over Vin range — ±0.5 ±1.0 %Vo Load Regulation Regload 0.1 ≤ Io ≤ 1.0 A — ±0.5 ±1.0 %Vo Vo Ripple/Noise Vn Vin=Vin min, Io=1.0 A — ±2 — %Vo Transient Response with Co = 100µF ttr Vos 25% load change Vo over/undershoot — — 100 5.0 200 — µSec %Vo Efficiency η Vin=9V, Io=0.5A, Vo=3.3V Vin=9V, Io=0.5A, Vo=5V Vin=16V, Io=0.5A, Vo=12V Vin=19V, Io=0.5A, Vo=15V — — — — 82 85 90 92 — — — — % % % % Switching Frequency ƒo Over Vin and Io ranges, Vo= 3.3V Vo = >5V 575 500 725 650 875 800 kHz Absolute Maximum Operating Temperature Range Ta -20 — +85 °C Recommended Operating Temperature Range Ta Free Air Convection, Vo= 3.3V (40-60LFM) Vo= 5V At Vin= 24V, Io=0.75A Vo= 12V -20 -20 -20 — — — +80** +80** +80** °C Thermal Resistance θja Free Air Convection (40-60LFM) — — — 45 50 60 — — — °C/W Storage Temperature Ts Vo = 3.3V Vo = 5V Vo = 12V Vo = 15V Vo = 3.3V Vo = 5V Vo = 12V/15V -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 — 5 — G’s — 4.5 — grams Weight * ISR will operate down to no load with reduced specifications. **See Thermal Derating chart. Note: The PT5100 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications. 4 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com CHARACTERISTIC Series PT5102, 12.0 VDC (See Note 1) Efficiency vs Output Current Efficiency vs Output Current 90 100 (See Note 1) 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 40 0 0 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 40 1 1 0 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 1 2 .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) 1 50°C 70°C 0.6 85°C 0.4 15 17 19 21 23 25 27 85°C 0.4 0 0 13 70°C 0.6 0.2 0.2 0 60°C 0.8 60°C Iout-(Amps) Iout-(Amps) Iout-(Amps) 0.2 11 (See Note 2) 1 0.8 9 1 50°C 0.8 0.4 0.8 Thermal Derating (Ta) (See Note 2) 1 85°C 0.6 Iout-(Amps) 70°C 7 0.4 Iout-(Amps) (See Note 2) 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 39 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 Vin Vin 1.2 38.0V 30.0V 24.0V 18.0V 12.0V 9.0V 1 0.8 0.6 0.4 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 0.2 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 0.4 Iout-(Amps) 0.6 0.8 1 Iout-(Amps) Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR. Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.) Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com 5 DATA SHEETS Efficiency vs Output Current PT5100 DATA PT5101, 5.0 VDC (See Note 1) (800) 531-5782 Wide Input Range Products PT5103, 3.3 VDC 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. 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