PT78NR200 TI | Alldatasheet

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For technical support and more information, see inside back cover or visit www.ti.com/powertrends PT78NR200 Series Standard Application C1 = Required 100µF electrolytic C2 = Required 100µF electrolytic

Ordering Information

3 GND

  • Negative output from positive input
  • Wide Input Range
  • Self-Contained Inductor
  • Short Circuit Protection
  • Over-T emperature Protection
  • Fast T ransient Response The PT78NR200 series creates negative output voltage from a posi- tive input voltage greater than 9V . These easy-to-use, 3-terminal, Inte- grated Switching Regulators (ISRs) have maximum output power of 10 to 12 watts and a negative output voltage that is laser trimmed. They also have excellent line and load regulation. The PT78NR200 requires 100 LFM of airflow at its maximum output current. 10-12W Plus to Minus Voltage Integrated Switching Regulator PT78NR200 -Vout COMCOM Vin 1 C2C1 Specifications Characteristics PT78NR200 SERIES (Ta= 25°C unless noted) Symbols Conditions Min Typ Max Units Output Current I o Over Vin range Vo= -5.2V 0.1* — 2.0 A Short Circuit Current I sc Vin=10V — 4 × Imax — Apk Inrush Current I ir Vin=10V — 4 — A tir On start-up — 0.5 — mSec Input Voltage Range V in 0.1 ≤ Io ≤ Imax 9— 1 5 V Output Voltage Tolerance ∆ Vo Over Vin range — ±1.0 ±3.0 %V oTa= 0°C to +70°C Line Regulation Reg line Over Vin range — ±0.5 ±1.0 %V o Load Regulation Reg load 0.3 ≤ Io ≤ Imax — ±0.5 ±1.0 %V o Vo Ripple/Noise V n Vin=10V, Io=I max —± 2—% V o Transient Response t tr 50% load change — 100 250 µSec (with 100µF output cap) V o over/undershoot — 5.0 — %V o Efficiency η Vin=9V, Io=0.5× Imax, Vo=-12V — 78 — % Switching Frequency ƒ o Over Vin and Io ranges600 650 700 kHz Absolute Maximum T a 100 LFM airflow 0— + 8 5 ° COperating Temperaturte Range Over V in and Io Ranges Recommended Operating T a 100 LFM airflow 0 — +60** °CTemperature Range Over V in and Io Ranges Thermal Resistance θ ja 100 LFM airflow — 35 — °C/W Storage Temperature T s — -40 — +125 °C Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s Mechanical Vibration — Per Mil-STD-883D, Method 2007.2, —1 0 — G’s20-2000 Hz, soldered in a PC board Weight — — — 11 Grams *ISR will operate down to no load with reduced specifications. **See Thermal Derating chart. Note: The PT78NR200 series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications. XX Y Output V oltage 52 = -5.2 V olts 06 = -6.0 V olts 12 = -12.0 Volts 15 = -15.0 Volts Pkg Style 600 Package Suffix H = Horizontal M ount S = Surface Mount V = V ertical Mount SLTS074A (Revised 6/30/2000) (For dimensions and PC board layout, see Package Styles 600 and 610.)

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