NV8664ST50T3GEVB NCV8664 Evaluation Board User's Manual http://onsemi.com EVAL BOARD USER’S MANUAL Description • Wide Input Voltage Operating Range of 5.5 V to 45 V • Internal Fault Protection • −42 V Reverse Voltage • Short Circuit/Overcurrent • Thermal Overload The NCV8664 is a precision 3.3 V and 5.0 V fixed output, low dropout integrated voltage regulator with an output current capability of 150 mA. Careful management of light load current consumption, combined with a low leakage process, achieve a typical quiescent ground current of 22 mA. The output voltage is accurate within ±2.0%, and maximum dropout voltage is 600 mV at full rated load current. The following ceramic capacitors are the recommended values to be used with these devices; Cin = 0.1 mF, Cout = 10 mF. Board Notes Max voltage on Vin cap not to exceed 35 V. Board Layouts These boards are shown in sets of 2 due to the minimum board size requirement of most board fabrication houses. When sent out for fabrication, it must be indicated that the center line of the board set be V−scored to allow board separation. Features • ±2.0% Output Accuracy, Over Full Temperature Range • 30 mA Maximum Quiescent Current at Iout = 100 mA • 600 mV Maximum Dropout Voltage at 150 mA Load Current Figure 1. Evaluation Board Photo © Semiconductor Components Industries, LLC, 2012 May, 2012 − Rev. 1 1 Publication Order Number: EVBUM2117/D NV8664ST50T3GEVB Figure 2. SOT−223 Evaluation Board Figure 3. DPAK Evaluation Board SCHEMATIC FOR THE NCV8664 EVALUATION BOARD NCV8664 Demo Board Vin NCV8664 Vout Cin Cout Figure 4. NCV8664 Evaluation Board Circuit http://onsemi.com 2 NV8664ST50T3GEVB Lead Free − − Advanced Circuits NCV8664DPAK3DemoBoard No Yes − SOT223 On Semiconductor NCV8664ST50R3G No Yes − − − Molex/Waldom Electronics Corporation 22−28−8030 Yes Yes 0.1 mF 10% 1206 Murata Electronics North America GRM319R71H104KA01D Yes Yes 10 mF 10% 1206 Murata Electronics North America GRM31CR71C106KAC7L Yes Yes − − − Advanced Circuits NCV8664DPAK3DemoBoard No Yes − − DPAK On Semiconductor NCV8664DT50RKG No Yes − − − Molex/Waldom Electronics Corporation 22−28−8030 Yes Yes 0.1 mF 10% 1206 Murata Electronics North America GRM319R71H104KA01D Yes Yes 10 mF 10% 1206 Murata Electronics North America GRM31CR71C106KAC7L Yes Yes Value Footprint − − Tolerance Substitution Allowed Table 1. BILL OF MATERIALS FOR THE NCV8664 EVALUATION BOARD Manufacturer Part Number SOT223 BOM DPAK BOM Test Procedure Required Equipment: • Resistive Load • 2 Multimeters • One NCV8664 Evaluation Board • DC Power Supply NCV8664 Demo Board DC Power Supply I Vin NCV8664 Vout Cin O Cout GND Load + DC − Voltmeter + − DC Voltmeter G Figure 5. Dropout Voltage Test Setup Dropout Voltage Verification Steps 1. Connect circuit as shown in Figure 5. 2. Set Vin = 13.5 V, Record Vout. 3. Reduce Vin until Vout has dropped by 100 mV. 4. Subtract Vout from Vin. Resulting Voltage is Dropout Voltage. http://onsemi.com 3 NV8664ST50T3GEVB 0.40 Quiescent Current Verification Steps 1. Connect circuit as shown in Figure 7. 2. Set Vin = 13.5 V. 3. Subtract Output Current from Input Current. DROPOUT VOLTAGE (V) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 0 50 100 200 150 OUTPUT CURRENT (mA) Figure 6. Dropout Voltage vs. Output Current DC Ammeter + DC Ammeter + − NCV8664 Demo Board DC Power Supply Vin I NCV8664 Cin Vout O Cout GND G Figure 7. Quiescent Current Verification Setup http://onsemi.com 4 Load − NV8664ST50T3GEVB Output Voltage Verification Steps 1. Connect circuit as shown in Figure 9. 2. Set output load to 100 W, Set Vin = 0 V, Record Vout. 3. Increase Vin, measure Vout. 9 8 7 6 5 4 3 2 1 0 Vin = 13.5 V 0 50 100 200 150 OUTPUT CURRENT (mA) Figure 8. Current Consumption vs. Output Current NCV8664 Demo Board DC Power Supply Vin I NCV8664 Vout Cin O Cout + GND Load + DC − Voltmeter G Figure 9. Quiescent Current Verification Setup 6 5 OUTPUT VOLTAGE (V) CURRENT CONSUMPTION (mA) 10 4 3 2 RL = 100 W 1 0 0 10 20 30 40 INPUT VOLTAGE (V) Figure 10. Input Voltage vs. Output Voltage http://onsemi.com 5 − DC Voltmeter NV8664ST50T3GEVB ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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