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PT78NR105S Datasheet(PDF) 1 Page - Texas Instruments |
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PT78NR105S Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 6 page  For technical support and more information, see inside back cover or visit www.ti.com/powertrends PT78NR100 Series Standard Application C1 = Required 100µF electrolytic (1) C2 = Required 100µF electrolytic (1) Ordering Information PT78NR1 Pin-Out Information Pin Function 1+Vin 2-Vout 3 GND • Negative output from positive input • Wide Input Range • Self-Contained Inductor • Short Circuit Protection • Over-Temperature Protection • Fast Transient Response The PT78NR100 Series creates a negative output voltage from a posi- tive input voltage greater than 7V. These easy-to-use, 3-terminal, Inte- grated Switching Regulators (ISRs) have maximum output power of 5 watts and a negative output voltage that is laser trimmed. They also have excellent line and load regulation. 1 Amp Plus to Minus Voltage Integrated Switching Regulator PT78NR100 + -Vout COM COM Vin 1 3 2 C2 C1 + XX Y Pkg Style 500 SLTS058B (Revised 8/31/2000) Output Voltage 03 = -3.0 Volts 05 = -5.0 Volts 52 = -5.2 Volts 06 = -6.0 Volts 07 = -7.0 Volts 08 = -8.0 Volts 09 = -9.0 Volts 10 = -10.0 Volts 12 = -12.0 Volts 14 = -13.9 Volts 15 = -15.0 Volts Package Suffix V = Vertical Mount S = Surface Mount H = Horizontal Mount Specifications Characteristics PT78NR100 SERIES (T a= 25°C unless noted) Symbols Conditions Min Typ Max Units Output Current Io Over Vin range Vo=-5V 0.05 (2) — 1.00 Vo=-6V 0.05 (2) —0.8 Vo=-7, -8, -9V 0.05 (2) — 0.55 A Vo=-10V 0.05 (2) —0.5 Vo=-12V 0.05 (2) — 0.40 Vo=-13.9, -15V 0.05 (2) — 0.30 Short Circuit Current Isc Vin=10V — 4 ×Imax — Apk Inrush Current Iir Vin=10V — 4 — A tir On start-up — 0.5 — mSec Input Voltage Range Vin 0.1 ≤ Io ≤ Imax Vo=-5V 7 — 25 V Vo=-6, -7, -8, -9V 7 — 21 V Vo=-10, -12V 7 — 18 V Vo=-13.9, -15V 7 — 15 V Output Voltage Tolerance ∆Vo Over Vin range — ±1.0 ±3.0 %Vo Ta=-20°C to +70°C Line Regulation Regline Over Vin range — ±0.5 ±1.0 %Vo Load Regulation Regload 0.1 ≤ Io ≤ Imax — ±0.5 ±1.0 %Vo Vo Ripple/Noise Vn Vin=10V, Io=Imax —±2 — %Vo Transient Response ttr 50% load change — 100 250 µSec (with 100µF output cap) Vo over/undershoot — 5.0 — %Vo Efficiency η Vin=10V, Io=0.5×Imax, Vo = -5V — 75 — % Switching Frequency ƒo Over Vin and Io ranges 600 650 700 kHz Absolute Maximum Ta Free Air Convection, (40-60LFM) -40 — +85 (3) °C Operating Temperaturte Range Over Vin Range Thermal Resistance θ ja Free Air Convection, (40-60LFM) — 45 — °C/W Storage Temperature Ts — -40 — +125 °C Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s Mechanical Vibration — Per Mil-STD-883D, Method 2007.2, —5 — G’s 20-2000 Hz, soldered in a PC board Weight — — — 6.5 Grams Notes: (1) The PT78NR100 Series requires a 100µF electrolytic or tantalum capacitor at both the input and output for proper operation in all applications. The input capacitor, C1 must have a ripple current rating ≥600 mArms, and an ESR ≤0.2Ω. (2) The ISR will operate down to no load with reduced specifications. (3) See Thermal Derating chart. |
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Similar Description - PT78NR105S |
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