MSR7805WSeries Low Cost, Non-isolated Wide Input, Single Output POL Switching Regulators Key Features: Electrical Specifications • Efficiency to 95% • 0.5A Output Current • EN 60950 Approved • Short Circuit Protected • Compact SIP Case • LM78xx Replacement • Wide Input Range • Negative Output Capability • -40ºC to +85ºC Operation • Low Noise Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice. Input Parameter Conditions No-Load Input Current Input Filter Reverse Polarity Input Min. Typ. Max. Units Positive Output Capacitor Filter 0.2 1.5 mA Units Not Allowed, Could Damage the Unit Output Parameter Conditions Output Voltage Accuracy Line Regulation Load Regulation Typ. Max. 3.3 VOUT Model Min. ±2.0 ±4.0 All Other Models ±2.0 ±3.0 Full Load, VIN = Min to Max ±0.2 ±0.4 % Nom Input, IOUT = 10% to 100% ±0.4 ±0.6 % Ripple & Noise (20 MHz) See Note 2 20 75 mV P - P 0.03 %/°C 0.2 1.0 mS 50 250 mV Max. Units 850 kHz Temperature Coefficient Transient Recovery Time, See Note 3 Transient Response Deviation % 25% Load Step Change Output Short Circuit Continuous (Autorecovery) General Parameter Conditions Isolation Voltage Min. Typ. Not Isolated Switching Frequency 550 EMI Characteristics Parameter Standard Criteria Radiated Emissions, See Note 4 EN 55022 Conducted Emissions, See Note 4 EN 55022 ESD EN 61000-4-2 RS EFT, See Note 5 Level B B B ±4 kV Contact EN 61000-4-3 A 10V/m 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 Operating Temperature Range 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 Ambient Storage Temperature Range Lead Temperature Min. Typ. Max. Units -40 +25 +85 °C -55 1.5 mm From Case For 10 Sec Cooling +125 °C 260 °C 95 % Free Air Convection Humidity RH, Non-condensing Physical Case Size See Mechanical Diagram (Page 4) Case Material Non-Conductive Black Plastic (UL-94V0) Weight 0.063 Oz (1.8g) Reliability Specifications Parameter MTBF Safety Approvals Conditions Min. MIL HDBK 217F, 25°C, Gnd Benign 2.0 Typ. UL 60950, EN 60950 www.micropowerdirect.com Max. Units MHours www.micropowerdirect.com Model Selection Guide Model Number MSR7805-033W MSR7805-05W MSR7805-09W MSR7805-12W MSR7805-15W Input Voltage (VDC) Nom. Range Output Efficiency (%, Typ) Voltage Current (VDC) (mA, Max) Min VIN Max VIN Capacitive Load (µF, Max) 24 4.75 - 36.0 3.3 500.0 86 80 680 24 6.50 - 36.0 5.0 500.0 90 84 680 12 7.00 - 31.0 -5.0 -300.0 80 81 330 24 12.0 - 36.0 9.0 500.0 93 90 680 24 15.0 - 36.0 12.0 500.0 94 91 680 12 8.00 - 24.0 -12.0 -150.0 84 85 330 24 19.0 - 36.0 15.0 500.0 95 93 680 12 8.00 - 21.0 -15.0 -150.0 85 87 330 Notes: 1. For many applications, no external components are required. If the input is over 30V, a 22 µF/50V input capacitor (C1) is required. See the typical application note below. 2. Output ripple is measured with a nominal input and is specified for a load range of 10% 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 25% 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 specifications 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 MSR7805-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, C1 has been added to improve stability over the input range (and over the operating temperature range). Capacitor C2 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 filter 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. Model Number C1 Typical Application Circuit 2, Negative Output C2 MSR7805-033W 10 µF/50V 22 µF/10V MSR7805-05W 10 µF/50V 22 µF/10V MSR7805-09W 10 µF/50V 22 µF/16V MSR7805-12W 10 µF/50V 22 µF/25V MSR7805-15W 10 µF/50V 22 µF/25V To produce a negative output, connect the output to pin 2 and ground to pin 3, as shown in the diagram above. Page 2 • MicroPower Direct • www.MicroPowerDirect.com • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: [email protected] Typical Application Circuit 3, Pos/Neg Output Typical application circuit 3 shows two units configured 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 Model Number C1/C3 C2/C4 LDM1 MSR7805-033W 10 µF/50V 22 µF/10V 10 µH MSR7805-05W 10 µF/50V 22 µF/10V 10 µH MSR7805-09W 10 µF/50V 22 µF/16V 10 µH MSR7805-12W 10 µF/50V 22 µF/25V 10 µH MSR7805-15W 10 µF/50V 22 µF/25V 10 µH Characteristic Curves, Positive Output Characteristic Curves, Negative Output Efficiency vs Input Voltage - (Full Load) Efficiency vs Input Voltage - (Full Load) Efficiency vs Output Power - (VIN = Nominal) Efficiency vs Output Power - (VIN = Nominal) MicroPower Direct • www.MicroPowerDirect.com • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: [email protected] • Page 3 Typical Application Circuit 4: External EMC Components www.micropowerdirect.com The diagram above illustrates a typical connection of the MSR7805W 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. 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. 4. The values for C1 and C2 are given in the “Component Values” table on page 2. 5. The LC filter LOUT & COUT is only needed if very low ripple is required. Recommended values for these components are given in the table at left. 6. Recommended values for components are: Component MOV LDM1 C3 C4 Value S20K30 82 µH 680 µF/50V 4.7 µF/50V Component LDM2 C1/ C2 LOUT COUT Value 12 µH See Note 4 10 - 47 µH 22 µF Related products that may be of interest: Mechanical Dimensions MSR7805-xxWUP • 500 mA Output Current • Miniature “Open Board” Construction • EN 60950 Approved • Low Cost MSR7810-xxWUP Pin Connection Positive Output Pin Function 1 +VIN 2 GND 3 VOUT Negative Output Pin Function 1 +VIN 2 VOUT 3 GND • 1A Output Current • Miniature Construction • EN 60950 Approved • Low Cost 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 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: [email protected]