SRM7810 Series Miniature, 1A Output Non-isolated 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: Output • Miniature SIP Case • 1.0A Output Current • Efficiency to 93% • LM78xx Replacement • Wide Input Range • Short Circuit Protected • Thermal Shutdown • Low Noise • Low Cost Parameter Conditions Min. Typ. Max. Units 3.3V Output Model ±2.0 ±3.5 % Other Models ±2.0 ±3.0 Vin = Min to Max ±0.5 ±0.75 % Iout = 10% to 100% ±0.5 ±1.0 % 25 45 mV P - P Output Voltage Accuracy Line Regulation Load Regulation Ripple & Noise (20 MHz) Thermal Shutdown See Note 1 150 Quiescent Current See Note 2 7 °C 10 mA Temperature Coefficient 0.02 %/°C Maximum Capacitive Load 1,000 µF Output Current Limit 3,000 Output Short Circuit mA Continuous (Autorecovery) General Parameter Conditions Isolation Voltage Min. Typ. Max. Units 335 385 435 kHz Min. Typ. Max. Units -40 +25 +85 °C +100 °C +125 °C 300 °C 95 % Not Isolated Switching Frequency Environmental Parameter Conditions Operating Temperature Range Ambient Operating Temperature Range Case Storage Temperature Range Lead Temperature MicroPower Direct -55 1.5 mm From Case For 10 Sec Cooling 292 Page Street Suite D Stoughton, MA 02072 USA Humidity T: (781) 344-8226 F: (781) 344-8481 E: [email protected] W: www.micropowerdirect.com Case Material Free Air Convection RH, Non-condensing Physical Case Size 0.45 x 0.30 x 0.40 Inches (11.5 x 7.55 x 10.2 mm) Non-Conductive Black Plastic (UL-94V0) Weight 0.07 Oz (2.0g) Reliability Specifications Parameter MTBF Conditions Min. MIL HDBK 217F, 25°C, Gnd Benign 2.0 Typ. www.micropowerdirect.com Max. Units MHours www.micropowerdirect.com Model Selection Guide Input Voltage (VDC) Model Number Range 4.75 - 18.0 4.75 - 18.0 4.75 - 18.0 4.75 - 20.0 6.50 - 20.0 Nom. SRM7810-015W SRM7810-018W SRM7810-02W SRM7810-03W SRM7810-05W 12 12 12 12 12 Output Efficiency (%, Typ) Voltage Current (VDC) (mA, Max) Min Vin Max Vin 1.5 1,000.0 78 72 1.8 1,000.0 82 76 2.5 1,000.0 87 82 3.3 1,000.0 90 83 5.0 1,000.0 93 85 Characteristic Curves (Efficiency & Ripple) Notes: 1. Measured at an internal IC junction. 2. Quiescent current is specified at 0% load for Vin = min to max. 3. This regulator is not designed to be used in parallel with another unit to increase output power. 4. The input should not exceed the range given in the model selection chart. Exceeding this limit could damage the unit. Efficiency vs Input Voltage (Full Load) Efficiency vs Load (Vin = Nom) Ripple vs Input Voltage (Full Load) Ripple vs Load (Vin = Nom) Derating Curve Pin Connection Pin Function 1 +Vin 2 Gnd 3 +Vout Mechanical Dimensions Typical Application Circuit Notes: 1. C1 is a low ESR ceramic capacitor 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. Component Values Model Number SRM7810-015W SRM7810-018W SRM7810-02W SRM7810-03W SRM7810-05W C1, C3 Capacitors C2, C4 (µF/V) (µF/V) 10 /25 10 /25 10 /25 10 /25 10 /25 22 / 6.3 22 / 6.3 22 / 10 22 / 16 22 / 16 MicroPower Direct We Power Your Success - For Less! 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • 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 side of the unit FAX: (781) 344-8481 • E-Mail: [email protected]