MSR7805WUP Series Low Cost, Non-isolated UnPotted, Single Output POL Switching Regulators Electrical Specifications Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice. Key Features: • Efficiency to 95% • 0.5A Output Current • Miniature Construction • EN 60950 Approved • LM78xx Replacement • Wide Input Range • Negative Output Capability • Short Circuit Protected • Low Noise • Low Low Cost Input Parameter Conditions No-Load Input Current Min. Positive Ouput Connection Input Filter Typ. Max. Units 0.2 1.5 mA Capacitor Filter Reverse Polarity Input Not Allowed, Could Damage the Unit Output Parameter Conditions Output Voltage Accuracy Line Regulation Load Regulation Typ. Max. Units 3.3 VDC Output Min. ±2.0 ±4.0 % All Other Outputs ±2.0 ±3.0 VIN = Min to Max ±0.2 ±0.4 % 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 Level Radiated Emissions, See Note 4 EN 55022 B Conducted Emissions, See note 4 EN 55022 B ESD EN 61000-4-2 B ±6 kv Air, ±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 Operating Temperature Range MicroPower Direct Storage Temperature Range 292 Page Street Suite D Stoughton, MA 02072 USA Lead Temperature Ambient Min. Typ. -40 +25 -55 1.5 mm From Case For 10 Sec Cooling Max. Units +85 °C +125 °C 300 °C 95 % Free Air Convection Humidity RH, Non-condensing Physical T: (781) 344-8226 F: (781) 344-8481 E: [email protected] W: www.micropowerdirect.com Size See Mechanical Diagram (Page 4) Weight 0.035 Oz (1.0g) Reliability Specifications Parameter MTBF Safety Standards Conditions Min. Typ. MIL HDBK 217F, 25°C, Gnd Benign 2.0 EN 60950 www.micropowerdirect.com Max. Units MHours www.micropowerdirect.com Model Selection Guide Model Number MSR7805-033WUP MSR7805-05WUP MSR7805-12WUP MSR7805-15WUP Output Input Voltage (VDC) Nom. Range 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 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 75% to 100%. 4. The unit may not meet emissions to class A without the addition of external capacitors (C1, C2 & C3) 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. This regulator is not designed to be used in parallel with another unit to increase output power. 7. A reverse polarity connection on the input could damage the unit. 8. The input should not exceed the range given in the model selection chart. Exceeding this limit could damage the unit. Fuse Rating Slow Blow (mA, Max 1,000 1,000 1,000 1,000 Derating Curve Typical Application Circuit 1, Positive Output For many applications, the MSR7805-xxWUP 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, the LC filter may be added (LOUT & COUT). The recommended value for LOUT is 10 µH - 47 µH. For COUT, a 22 µF. is recommended. To meet EMI standards, see the typical circuit 4 diagram on page 4. Model Number C1 Typical Application Circuit 2, Negative Output C2 MSR7805-033WUP 22 µF/50V 22 µF/6.3V MSR7805-05WUP 22 µF/50V 22 µF/10V MSR7805-12WUP 22 µF/50V 22 µF/25V MSR7805-15WUP 22 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. 292 Page Street Ste D Stoughton, MA 02072 • 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 MSR7805-033WUP 10 µF/50V 10 µF/6.3V 10 µH MSR7805-05WUP 10 µF/50V 10 µF/6.3V 10 µH MSR7805-12WUP 10 µF/50V 10 µF/6.3V 10 µH MSR7805-15WUP 10 µF/50V 10 µF/6.3V 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 • 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: [email protected] Typical Application Circuit 2: External EMC Components The diagram above illustrates a typical connection of the MSR7805WUP 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 recommended fuse is shown in the model chart on page 2. 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. www.micropowerdirect.com 3. 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 Value 12 µH See Note 4 See Note 4 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 on page 2. Mechanical Dimensions Packing Carton Pin Connection Positive Output Pin Function 1 +VIN 2 GND 3 VOUT Negative Output Pin Function 1 +VIN 2 VOUT 3 GND Notes: 1. MSR7805WUP units are shipped in a product carton (inner carton) which is then paced into a shipping carton. The shipping carton will hold two product cartons. 2. Products are placed into individual slots cut into foam trays. A foam cover is then secured to the tray. Each tray will hold 140 units. Up to four trays will fit into a product carton. Notes: • All dimensions are typical in inches (mm) • Tolerance x.xx = ±0.01 (±0.25) • Pin 1 is marked by a “dot” 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]