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www.micropowerdirect.com MicroPower Direct

292 Page Street

Stoughton, MA 02072 USA T: (781) 344-8226 F: (781) 344-8481 E: sales@micropowerdirect.com W: www.micropowerdirect.com Key Features:  Effi ciency to 96%  1.0A Output Current  EN 60950 Approved  Short Circuit Protected  Right Angle Pins Available  LM78xx Replacement  Wide Input Range  Negative Output Capability  -40ºC to +85ºC Operation  Low Noise MSR7810W Low Cost, Non-isolated Wide Input, Single Output POL Switching Regulators Input Parameter Conditions Min. Typ. Max. Units No-Load Input Current Positive Output 0.1 1.0 mA Input Filter Capacitor Filter Reverse Polarity Input Not Allowed, Could Damage the Unit Output Parameter Conditions Min. Typ. Max. Units Line Regulation Full Load, VIN = Min to Max ±0.2 ±0.4 % Load Regulation Nom Input, IOUT = 10% to 100% ±0.4 ±0.6 % Ripple & Noise (20 MHz) See Note 2 20 75 mV P - P Temperature Coeffi cient 0.03 %/°C Transient Recovery Time, See Note 3 25% Load Step Change 0.1 1.0 mS Transient Response Deviation 50 300 mV Output Short Circuit Continuous (Autorecovery) General Parameter Conditions Min. Typ. Max. Units Isolation Voltage Not Isolated Switching Frequency MSR7810-033W/MSR7810-05W 420 520 620 kHzAll Other Models 580 680 780 EMI Characteristics Parameter Standard Criteria Level Radiated Emissions, See Note 4 EN 55022 B Conducted Emissions, See Note 4 EN 55022 B ESD EN 61000-4-2 B ±4 kV Contact RS EN 61000-4-3 A 10V/m EFT, See Note 5 EN 61000-4-4 B ±1 kV Surge, See Note 5 EN 61000-4-5 B ±1 kV CS EN61000-4-6 A 3V rms Environmental Parameter Conditions Min. Typ. Max. Units Operating Temperature Range Ambient -40 +25 +85 °C Storage Temperature Range -55 +125 °C Lead Temperature 1.5 mm From Case For 10 Sec 260 °C Cooling Free Air Convection Humidity RH, Non-condensing 95 % Physical Case Size See Mechanical Diagram (Page 4) Case Material Non-Conductive Black Plastic (UL-94V0) Weight 0.133 Oz (3.8g) Reliability Specifi cations Parameter Conditions Min. Typ. Max. Units MTBF MIL HDBK 217F , 25°C, Gnd Benign 2.0 MHours Safety Approvals UL 60950, EN 60950 Series Electrical Specifi cations Specifi cations typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifi cations subject to change without notice.

Page 2 • MicroPower Direct • www.MicroPowerDirect.com • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com www.micropowerdirect.comModel Selection Guide Model Number Input Voltage (VDC) Output Effi ciency (%, Typ) Capacitive Load (µF , Max)Nom. Range Voltage (VDC) Current (mA, Max) Min VIN Max VIN MSR7810-033W(L) 24 6.00 - 36.0 3.3 1,000.0 90 81 680 MSR7810-05W(L) 24 8.00 - 36.0 5.0 1,000.0 93 86 680 12 8.00 - 27.0 -5.0 -500.0 86 82 330 MSR7810-09W(L) 24 13.0 - 36.0 9.0 1,000.0 95 90 680 MSR7810-12W(L) 24 16.0 - 36.0 12.0 1,000.0 96 93 680 12 8.00 - 20.0 -12.0 -300.0 89 88 330 MSR7810-15W(L) 24 20.0 - 36.0 15.0 1,000.0 96 94 680 12 8.00 - 18.0 -15.0 -300.0 89 89 330 Notes: 1. For many applications, no external components are required. If the input is over 30V, a 22 µ F/50V input capacitor (C1) is required. See the typical application note below. 2. Output ripple is measured with a nominal input and is specifi ed for a load range of 20% to 100%. When measuring output ripple, two external capacitors (1 µF and 10 µF) must be placed from the VOUT to the Gnd pins. 3. Transient recovery is measured to within a 1% error band for a load step change of 75% to 100%. 4. The unit may not meet emissions to class B without the addition of external components as shown in the typical circuit 4 diagram on page 4. 5. The unit meets EFT & surge EMS specifi cations with the addition of external components as shown in the typical circuit 4 diagram on page 4. 6. Soldering temperature is measured 1.5 mm from the pins. Soldering time should not exceed 10S. 7. This regulator is not designed to be used in parallel with another unit to increase output power. 8. A reverse polarity connection on the input could damage the unit. 9. The input should not exceed the range given in the model selection chart. Exceeding this limit could damage the unit. 10. It is recommended that an external fuse be used. The fuse should be selected based upon the actual input current of the application. For more information please call the factory. Derating Curve Typical Application Circuit 1, Positive Output For many applications, the MSR7810-xxW can be used without external components. However, if the application requires meeting EMC/EMI standards or operation at inputs over 30V, a minimum of external components is needed. A typical connection (for a positive output voltage) is shown at right. Here, C 1 has been added to improve stability over the input range (and over the operating temperature range). Capacitor C is added to reduce the output ripple. Suggested values for these capacitors are given in the “Component Values” table below. These capacitors are ceramic and should be placed as close to the unit as possible. Tantalum or low ESR electrolytic capacitors may also be used. If very low noise is required, an LC fi lter may be added to the output. For suggested component values contact the factory. To meet EMI standards, see the typical circuit 4 diagram on page 4. To produce a negative output, connect the output to pin 2 and ground to pin 3, as shown in the diagram above. Typical Application Circuit 2, Negative Output Model Number C1 C2 MSR7810-033W(L) 10 µF/50V 22 µF/10V MSR7810-05W(L) 10 µF/50V 22 µF/10V MSR7810-09W(L) 10 µF/50V 22 µF/16V MSR7810-12W(L) 10 µF/50V 22 µF/25V MSR7810-15W(L) 10 µF/50V 22 µF/25V For “Right Angle” pins add the L to the part number: MSR7810-05WL

www.micropowerdirect.com MicroPower Direct • www.MicroPowerDirect.com • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com • Page 3 Characteristic Curves, Negative Output Effi ciency vs Input Voltage - (Full Load) Effi ciency vs Input Voltage - (Full Load) Effi ciency vs Output Power - (VIN = Nominal) Effi ciency vs Output Power - (VIN = Nominal) Characteristic Curves, Positive Output Model Number C1/C3 C2/C4 LDM1 MSR7810-033W(L) 10 µF/50V 22 µF/10V 10 µH MSR7810-05W(L) 10 µF/50V 22 µF/10V 10 µH MSR7810-09W(L) 10 µF/50V 22 µF/16V 10 µH MSR7810-12W(L) 10 µF/50V 22 µF/25V 10 µH MSR7810-15W(L) 10 µF/50V 22 µF/25V 10 µH Typical Application Circuit 3, Pos/Neg Output Typical application circuit 3 shows two units confi gured with a common input connection to produce positive and negative outputs. The inductor LDM1 is added to reduce interference between the units. The recommended values for all the external components are given in the table at right.

www.micropowerdirect.com MicroPower Direct We Power Your Success - For Less! 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com Mechanical Dimensions Positive Output Pin Function 1 +VIN

2 GND

3 VOUT

2 VOUT

3 GND

Notes:  All dimensions are typical in inches (mm)  Tolerance x.xx = ±0.01 (±0.25)  Pin 1 is marked by a “dot” or indentation on the front of the unit Typical Application Circuit 4: External EMC Components The diagram above illustrates a typical connection of the MSR7810W(L) series for applications that require meeting EMC standards. Some notes on this diagram (starting with the input circuit) are: 1. It is recommended that an external fuse be used. The fuse should be selected based upon the actual input current of the application. Contact the factory for more information. 5. Recommended values for components are: Component Value Component V alue MOV S20K30 LDM 2 12 µH LDM1 82 µHC 1/ C2 See Note 4 C3 680 µF/50V L OUT 10 - 47 µH C4 4.7 µF/50V COUT 22 µF 2. An external MOV is recommended on the input to protect the unit in the event of a surge. A recommended value is given in the table at right. 3. The values for C 1 and C2 are given in the “Component Values” table on page 2. 4. The LC fi lter LOUT & COUT is only needed if very low ripple is required. Recommended values for these components are given in the table at right.