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| For assistance or to order, call (800) 531-5782 78SR100 Series 1.5 AMP POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR Revised 6/30/98 * * * * * * Very Small Footprint High Efficiency > 85% Self-Contained Inductor Internal Short-Circuit Protection Over-Temperature Protection Wide Input Range The 78SR100 is a series of wide input voltage, 3-terminal Integrated Switching Regulators (ISRs). These ISRs have a maximum output current of 1.5A and an output voltage that is laser trimmed to a variety of industry standard voltages. These 78 series regulators have excellent line and load regulation with internal shortcircuit and over-temperature protection, are very flexible, and may be used in a wide variety of applications. Pin-Out Information Pin 1 Ordering Information Function Vin GND Vout 78SR1 XX Output Voltage 05 = 5.0 Volts 53 = 5.25 Volts 06 = 6.0 Volts 74 = 7.15 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 YC Package Suffix V = Vertical Mount S = Surface Mount H = Horizontal Mount Standard Application Vin 1 2 3 3 78SR100 2 Vout C1 GND C2 GND C1 = Optional 1F ceramic C2 = Optional 1F ceramic Specifications Characteristics (Ta = 25C unless noted) Output Current Short Circuit Current Input Voltage Range Output Voltage Tolerance Line Regulation Load Regulation Vo Ripple/Noise Transient Response Efficiency Switching Frequency Absolute Maximum Operating Temperature Range Recommended Operating Temperature Range Thermal Resistance Storage Temperature Mechanical Shock Mechanical Vibration Weight Symbols Io Isc Vin Vo Regline Regload Vn ttr o Ta Ta Pkg Style 500 78SR100 SERIES Conditions Over Vin range Vin = Vin min Min 0.1* -- Vo= 5V Vo= 12V 7 14.5 -- -- -- Vo= 5V Vo= 12V -- -- -- Vo= 5V Vo= 12V -- -- 600 -40 -40 -- -40 -- -- -- Typ -- 3.5 -- -- 1.0 0.2 0.1 50 80 100 30 85 90 650 -- -- 45 -- 500 5 6.5 Max 1.5 -- 30 30 2.0 0.4 0.2 -- -- -- -- -- 700 +85 +80** -- +125 -- -- -- Units A Apk V V %Vo %Vo %Vo mVpp mVpp Sec %Vo % % kHz C C C/W C G's G's grams 0.1 Io 1.5A Over Vin range, Io=1.5A Ta = 0C to +60C Over Vin range 0.1 Io 1.5A Vin= 9V, Io= 1.5A Vin= 16V, Io= 1.5A 50% load change Vo over/undershoot Vin= 10V, Io= 1A Vin= 17V, Io= 1A Over Vin range, Io=1.5A -- Free Air Convection, (40-60LFM) At Vin= 24V, Io=1.0A 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 -- **See Thermal Derating chart. ja Ts -- -- -- *ISR will operate down to no load with reduced specifications. 2 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com For assistance or to order, call (800) 531-5782 78SR100 CHARACTERISTIC DATA Series 78SR133_ 3.3 VDC (See Note 1) 78SR105_ 5.0 VDC (See Note 1) 78SR112_ 12.0 VDC DATA SHEETS (See Note 1) Efficiency vs Output Current 100 100 Efficiency vs Output Current 100 Efficiency vs Output Current 90 90 90 Efficiency (%) Efficiency (%) Efficiency (%) Vin 80 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V Vin 80 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V 80 Vin 14.0V 20.0V 25.0V 30.0V 35.0V 70 70 70 60 60 60 50 50 50 40 0.0 0.5 1.0 1.5 40 0.0 0.5 1.0 1.5 40 0.0 0.5 1.0 1.5 Iout (A) Iout (A) Iout (A) Ripple vs Output Current 60 50 Ripple vs Output Current 80 70 140 120 Ripple vs Output Current Vin 60 Vin 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V Ripple (mV) Ripple (mV) 40 30 20 10 0 0.0 0.5 1.0 1.5 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V Ripple (mV) 100 80 60 40 20 0 Vin 14.0V 20.0V 25.0V 30.0V 35.0V 50 40 30 20 10 0 0.0 0.5 1.0 1.5 0.0 0.5 1.0 1.5 Iout (A) Iout (A) Iout (A) Thermal Derating (Ta) 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 9 13 17 21 (See Note 2) 1.6 Thermal Derating (Ta) 1.4 (See Note 2) 1.6 1.4 Thermal Derating (Ta) (See Note 2) 60C 70C 85C 60C 1.2 1.2 60C 70C 70C Iout (A) Iout (A) Iout (A) 1 1 85C 0.8 0.6 0.4 0.2 0 85C 0.8 0.6 0.4 0.2 0 25 9 12 15 18 21 24 27 30 33 36 39 16 19 22 25 28 31 34 37 40 Vin (Volts) Vin (Volts) Vin (Volts) Power Dissipation vs Output Current 1.8 1.6 1.4 1.8 1.6 Power Dissipation vs Output Current 2.5 Power Dissipation vs Output Current Vin 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V 1.4 2.0 Vin 7.0V 10.0V 15.0V 20.0V 25.0V 30.0V Pd (Watts) Pd (Watts) Pd (Watts) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.5 1.0 1.5 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.5 1.0 1.5 Vin 1.5 14.0V 20.0V 25.0V 30.0V 35.0V 1.0 0.5 0.0 0.0 0.5 1.0 1.5 Iout (A) Iout (A) Iout (A) 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.) Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com 3 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. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 1999, Texas Instruments Incorporated |
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