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| PT78NR100 Series 1 Amp Plus to Minus Voltage Integrated Switching Regulator SLTS058A (Revised 6/30/2000) * * * * * * Negative output from positive input Wide Input Range Self-Contained Inductor Short Circuit Protection Over-T emperature Protection Fast Transient Response The PT78NR100 Series creates a negative output voltage from a positive input voltage greater than 7V. These easy-to-use, 3-terminal, Integrated 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. Pin-Out Information Pin 1 Ordering Information Function +Vin -Vout GND PT78NR1 XX Output Voltage 03 = -3.0 Volts 05 = -5.0 Volts 52 = -5.2 Volts 07 = -7.0 Volts 08 = -8.0 Volts 09 = -9.0 Volts 12 = -12.0 Volts 15 = -15.0 Volts Y Package Suffix V = Vertical Mount S = Surface Mount H = Horizontal Mount Standard Application Vin + 1 2 3 2 PT78NR100 3 -Vout C1 COM C2 + COM C1 = Required 100F electrolytic C2 = Required 100F electrolytic Specifications Characteristics (Ta= 25C unless noted) Output Current Symbols Io Conditions Pkg Style 500 PT78NR100 SERIES Min Vo=-5V Vo=-7, -8, -9V Vo=-12V Vo=-15V 0.05* 0.05* 0.05* 0.05* -- -- -- Vo=-5V Vo=-7, -8, -9V Vo=-12V Vo=-15V 7 7 7 7 -- -- -- -- -- -- -- 600 -40 -40 -- -40 -- -- -- Typ -- -- -- -- 4xImax 4 0.5 -- -- -- -- 1.0 0.5 0.5 2 100 5.0 75 650 -- -- 45 -- 500 5 6.5 Max 1.00 0.55 0.40 0.30 -- -- -- 25 21 18 15 3.0 1.0 1.0 -- 250 -- -- 700 +85 +60** -- +125 -- -- Units A A A A Apk A mSec V V V V %Vo %Vo %Vo %Vo Sec %Vo % kHz C C C/W C G's G's Grams Over Vin range Short Circuit Current Inrush Current Input Voltage Range Isc Iir tir Vin Vin=10V Vin=10V On start-up 0.1 Io Imax Output Voltage Tolerance Line Regulation Load Regulation Vo Ripple/Noise Transient Response (with 100F output cap) Efficiency Switching Frequency Absolute Maximum Operating Temperaturte Range Recommended Operating Temperature Range Thermal Resistance Storage Temperature Mechanical Shock Mechanical Vibration Weight Vo Regline Regload Vn ttr o Ta Ta Over Vin range Ta=-20C to +70C Over Vin range 0.1 Io Imax Vin=10V, Io=Imax 50% load change Vo over/undershoot Vin=10V, Io=0.5xImax, Vo = -5V Over Vin and Io ranges Free Air Convection, (40-60LFM) Over Vin and Io Ranges Free Air Convection, (40-60LFM) Over Vin and Io Ranges Free Air Convection, (40-60LFM) -- Per Mil-STD-883D, Method 2002.3 Per Mil-STD-883D, Method 2007.2, 20-2000 Hz, soldered in a PC board -- ja Ts -- -- -- *ISR will operate down to no load with reduced specifications. **See Thermal Derating chart. Note: The PT78NR100 Series requires a 100F electrolytic or tantalum output capacitor for proper operation in all applications. For technical support and more information, see inside back cover or visit www.ti.com/powertrends PT78NR100 Series 1 Amp Plus to Minus Voltage Integrated Switching Regulator Typical Characteristics PT78NR105 -5.0 VDC (See Note 1) PT78NR109 -9.0 VDC (See Note 1) PT78NR112 -12.0 VDC (See Note 1) Efficiency vs Output Current 100 100 Efficiency vs Output Current 100 Efficiency vs Output Current 90 90 90 Efficiency - % Efficiency - % 80 Vin 7.0V 12.0V 15.0V 20.0V 25.0V Efficiency - % Vin 80 7.0V 9.0V 12.0V 15.0V 20.0V 80 Vin 7.0V 70 70 12.0V 15.0V 18.0V 21.0V 70 60 60 60 50 50 50 40 0 0.2 0.4 0.6 0.8 1 40 0 0.1 0.2 0.3 0.4 0.5 40 0 0.1 0.2 0.3 0.4 Iout-(Amps) Iout-(Amps) Iout-(Amps) Ripple vs Output Current 200 200 Ripple vs Output Current 250 Ripple vs Output Current 160 Vin 160 Vin 200 Ripple-(mV) 120 18.0V 15.0V 80 12.0V 7.0V Ripple-(mV) 80 25.0V 20.0V 15.0V 12.0V 7.0V Ripple-(mV) 120 21.0V 150 Vin 100 20.0V 15.0V 12.0V 9.0V 7.0V 40 40 50 0 0 0.2 0.4 0.6 0.8 1 0 0 0.1 0.2 0.3 0.4 0.5 0 0 0.1 0.2 0.3 0.4 Iout-(Amps) Iout-(Amps) Iout-(Amps) Thermal Derating (Ta) 1 0.9 0.8 (See Note 2) 60C 70C 0.5 0.6 Thermal Derating (Ta) (See Note 2) 0.4 Thermal Derating (Ta) (See Note 2) 70C 70C 0.35 0.3 Iout-(Amps) Iout-(Amps) 85C 0.6 0.5 0.4 0.3 0.2 0.4 Iout-(Amps) 0.7 0.25 0.2 0.15 0.1 85C 0.3 85C 0.2 0.1 0.1 0 7 10 13 16 19 22 25 0 7 11 15 19 0.05 0 7 10 13 16 19 Vin-(Volts) Vin-(Volts) Vin-(Volts) Power Dissipation vs Output Current 2 1.8 1.6 Power Dissipation vs Output Current 1.6 1.4 1.2 1.6 1.4 1.2 Power Dissipation vs Output Current 1.4 Vin Vin PD-(Watts) PD-(Watts) 25.0V 1.2 1 0.8 0.6 20.0V 15.0V 12.0V 7.0V 1 0.8 0.6 0.4 21.0V 18.0V 15.0V 12.0V 7.0V PD-(Watts) V Vin 1 20.0V 0.8 0.6 0.4 0.2 0 0 0.1 0.2 0.3 0.4 15.0V 12.0V 9.0V 7.0V 0.4 0.2 0.2 0 0 0.2 0.4 0.6 0.8 1 0 0 0.1 0.2 0.3 0.4 0.5 Iout-(Amps) Iout-(Amps) Iout-(Amps) Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25C. 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.) For technical support and more information, see inside back cover or visit www.ti.com/powertrends I MPORTANT NOTI CE Te xas Instrume nts and its subsidiarie s (TI) re se rve the right to make change s to the ir products or to discontinue any product or se rvice without notice , and advise custome rs to obtain the late st ve rsion of re le vant information to ve rify, be fore placing orde rs, that information be ing re lie d on is curre nt and comple te . All products are sold subje ct to the te rms and conditions of sale supplie d at the time of orde r acknowle dgme nt, including those pe rtaining to warranty, pate nt infringe me nt, and limitation of liability. TI warrants pe rformance of its se miconductor products to the spe cifications applicable at the time of sale in accordance with TI's standard warranty. Te sting and othe r quality control te chnique s are utilize d to the e xte nt TI de e ms ne ce ssary to support this warranty. Spe cific te sting of all parame te rs of e ach de vice is not ne ce ssarily pe rforme d, e xce pt those mandate d by gove rnme nt re quire me nts. Custome rs are re sponsible for the ir applications using TI compone nts. In orde r to minimize risks associate d with the custome r's applications, ade quate de sign and ope rating safe guards must be provide d by the custome r to minimize inhe re nt or proce dural hazards. TI assume s no liability for applications assistance or custome r product de sign. TI doe s not warrant or re pre se nt that any lice nse , e ithe r e xpre ss or implie d, is grante d unde r any pate nt right, copyright, mask work right, or othe r inte lle ctual prope rty right of TI cove ring or re lating to any combination, machine , or proce ss in which such se miconductor products or se rvice s might be or are use d. TI's publication of information re garding any third party's products or se rvice s doe s not constitute TI's approval, warranty or e ndorse me nt the re of. Copyright (c) 2000, Te xas Instrume nts Incorporate d |
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