LSR7805 Series
Low Cost, Miniature 500 mA Surface Mount POL Switching Regulators
Electrical Specifications
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Output
Key Features:
• Efficiency to 96% • 0.5A Output Current • Compact SMT Case • LM78xx Replacement • Wide Input Range • Adjustable Output Voltage • Short Circuit Protected • Thermal Shutdown • Low Noise • Low Low Cost
Parameter Output Voltage Accuracy Output Voltage Adjustment Range Line Regulation Load Regulation Ripple & Noise (20 MHz) Thermal Shutdown Quiescent Current, Note 3 Temperature Coefficient Maximum Capacitive Load Output Current Limit Short Circuit Input Power Output Short Circuit
Conditions
Typ. Max. ±2.0 ±3.0 Contact Factory For Information Vin = Min to Max ±0.2 ±0.5 Iout = 10% to 100% ±0.3 ±0.75 10 25 See Note 2 160 15 0.02 1,000 1.8 0.5 1.8 Continuous (Autorecovery) Min. Not Isolated Typ. 410 Max.
Min.
Units % % % mV P - P °C mA %/°C µF A W
General
Parameter Isolation Voltage Switching Frequency Conditions Units kHz Max. +85 +100 +125 300 95 Units °C °C °C °C %
Environmental
Parameter Operating Temperature Range Operating Temperature Range Storage Temperature Range Lead Temperature Cooling Humidity
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Conditions Ambient Case
Min. -40
Typ. +25
-55 1.5 mm From Case For 10 Sec Free Air Convection RH, Non-condensing
Physical
Case Size Case Material Weight 0.60 x 0.476 x 0.285 Inches (15.24 x 12.10 x 7.25 mm) Non-Conductive Black Plastic (UL-94V0) 0.08 Oz (2.3g) Conditions MIL HDBK 217F, 25°C, Gnd Benign Min. 2.0 Typ. Max. Units MHours
Reliability Specifications
Parameter MTBF
Typical Application Circuits
MicroPower Direct
292 Page Street Suite D Stoughton, MA 02072 USA T: (781) 344-8226 F: (781) 344-8481 E:
[email protected] W: www.micropowerdirect.com
Component Values
Model Number LSR7805-03W LSR7805-05W LSR7805-09W LSR7805-12W LSR7805-15W Ceramic Capacitors C1 C2 10 µF/50V 22 µF/ 16V 10 µF/50V 22 µF/ 16V 10 µF/50V 22 µF/ 16V 10 µF/50V 10 µF/ 25V 10 µF/50V 10 µF/ 25V
Notes: 1. C1 & C2 are low ESR ceramic capacitors used to minimize noise at the regulator. A tantalum or low ESR electrolytic capacitor may also be used. 2. C1 & C2 are required and should be mounted as close to the regulator pins as possible. C3 is required for optimum performance, use 100 µF OR more. 3. R1 & R2 are used to adjust the regulator output. For suggested values, please contact the factory.
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Datasheet pdf - http://www.DataSheet4U.co.kr/
Model Selection Guide
Model Number LSR7805-03W LSR7805-05W LSR7805-09W LSR7805-12W LSR7805-15W Input Voltage (VDC)
Nom.
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Output Voltage Adj Range
(VDC) (VDC)
Efficiency (%, Typ) Current
(mA, Max)
12 12 24 24 24
Range 4.5 - 28.0 6.0 - 28.0 11.0 - 28.0 14.0 - 28.0 17.0 - 28.0
3.3 5.0 9.0 12.0 15.0
1.8 - 5.5 2.5 - 8.0 3.0 - 11.5 4.5 - 13.5 4.5 - 15.5
500.0 500.0 500.0 500.0 500.0
Min Vin 90 94 95 95 96
Max Vin 75 81 87 90 92
Notes: 1. Load regulation is specified for an output load change of 10% to 100%. 2. Measured at an internal IC junction. 3. Quiescent current is specified at 0% load for Vin = min to max. 4. This regulator is not designed to be used in parallel with another unit to increase output power. 5. The remote on/off control current is typically 2 µA. Shutdown Min Max input current is 30 µA max. The On/Off shutdown threshold Open or 1.5V