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7805SR Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 5 page HIGH-EFFICIENCY SWITCHING REGULA T ORS 78SR Series 2 DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • E–mail: sales@datel.com • Internet: www.datel.com Input/Output Models 7803SR 7805SR 7812SR Output Voltage +3.3Vdc +5.0Vdc +12.0Vdc Rated Output Current 0.5A 0.5A 0.4A Output Voltage Accuracy ±2% ±1.5% ±2% Input Voltage Range ➀ +7.5-36Vdc +7.5-36Vdc +15-36Vdc Line Regulation (100% load) ±0.3% ±0.3% ±0.3% Load Regulation (0-100% load) ±0.2% ±0.2% ±0.2% Quiescent Current 3mA typ., 5mA max. Input Current See Performance Curves Efficiency See Performance Curves Transient Response See Performance Curves Input & Output Noise See Performance Curves Short Circuit Protection ➁ Continuous Isolation None Overvoltage Protection None Undervoltage Protection None Environmental Models 7803SR 7805SR 7812SR Operating Temperature –40 to +70°C Storage Temperature –40 to +85°C Cooling Free Air Convection Humidity (Non-condensing) 0 to 85% Physical Mechanical See Mechanical Specifications Package Open-frame SIP Pins 0.025” (0.64mm) square, tin-plated bronze Weight 0.08 ounces (2.2g) Pin Soldering +260°C for 5 seconds ➀ See Technical Note 5. ➁ While these regulators can withstand a continuous short-circuit across their output terminals, they will experience a significant temperature rise. Extended short-circuit operation will adversely affect the unit’s reliability. of the pc-board. However, because the surface of inductor L1 on 78XXSRH models is electrically conductive, it must not be allowed to come in contact with any exposed pc-board traces, other than power ground (GND). While the 2-mil-thick (0.05mm) polyester label attached to L1 provides some degree of electrical insulation (only if L1 sits perfectly flat on the pc-board), it is recommended that a 0.020” (0.5mm) clearance be maintained between L1 and all exposed pc-board traces. 8. Dropout Voltage: 78SR series regulators described in this data sheet specify a minimum input voltage at which full-load accuracy and output regulation are guaranteed (7.5V for 7803SR and 7805SR, and 15.0V for 7812SR). However, these devices will stay in regulation at lower input voltages if they are operated at less than their rated loads. The following dropout-voltage data, derived from sample testing per- formed at an ambient temperature of +25°C with resistive loads, should be used for information purposes only. For these tests, a unit was considered to be out of regulation when its output changed by more +/-0.005Vdc from its nominal value. All voltages were measured directly at the regulator’s I/O pins. 0% Load 25% Load 50% Load 100% Load 7803SR 6.0V 6.2V 6.2V 6.3V 7805SR 6.3V 6.2V 6.2V 6.8V 7812SR 12.8V 13.0V 12.8V 13.0V Typical Dropout Voltage Technical Notes (continued) DATEL Part No. Output Voltage Output Current Input Voltage Standard Pin Package 7803SR +3.3Vdc 0.5A +7.5-36Vdc 7805SR +5.0Vdc 0.5A +7.5-36Vdc 7812SR +12.0Vdc 0.4A +15-36Vdc Horizontal Pin Package 7803SRH +3.3Vdc 0.5A +7.5-36Vdc 7805SRH +5.0Vdc 0.5A +7.5-36Vdc 7812SRH +12.0Vdc 0.4A +15-36Vdc Ordering Information Performance/Functional Specifications Typical at TA = +25°C |
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