NCV47411PAAJGEVB ON Semiconductor

Test Procedure for the NCV47411PAAJGEVB Evaluation Board The NCV47411 is dual channel adjustable Low Dropout Regulator with: - Two adjustable output voltages from 3.3 V to 20 V - Two adjustable current limits up to 150 mA - Enable inputs with 3.3 V Logic compatible thresholds Power supplying of the chip is possible from one or two independent sources. INPUT1 must be always supplied and INPUT2 as optional for V supply. in2 1. Power supplying a. Power supplying from one source Connect the test setup as is shown in Figure 1 (See Table 1 with required equipment). Connect power supply to INPUT1 connector J (Power supplying of INPUT2 is not needed). 1 - Hi F Positive Force line - Hi S Positive Sense line - Lo F Negative Force line - Lo S Negative Sense line Connect V pin to INPUT1 via appropriate position of jumper V to IN1 or IN2 connection. in2 in2 b. Power supplying from two sources Connect the test setup as is shown in Figure 1 (See Table 1 with required equipment). Connect two power supplies to INPUT1 connector J and to INPUT2 connector J , respectively. 1 2 - Hi F Positive Force line - Hi S Positive Sense line - Lo F Negative Force line - Lo S Negative Sense line Values of input voltages V and V can be different. This option is suitable for reducing of in1 in2 power dissipation on chip. Connect V pin to INPUT2 via appropriate position of jumper V to IN1 or IN2 connection. in2 in2 2. Connect jumpers J J for output current limitation from V pin and J J for output current 10 13 out1 20 23 limitation from V pin. out2 - J I ~ 10 mA n0 LIMn0 - J I ~ 50 mA n1 LIMn1 - J I ~ 100 mA n2 LIMn2 - J I R positions available for individual current limit setting by resistor from range n3 LIMn3 CSOn3 850 to 12.75 k 3. Set Input Voltage and turn on Power Supply/Supplies. 4. Enable output of the channel to power the regulated output voltage by connecting the ENABLE pin to corresponding V via jumper. Enabling can be performed by external voltage source as well. in 5. Load the outputs by resistive loads connected via jumpers: - J , J 51 5 7 - J , J 1 k 6 8 External loads can be used instead build-in resistive loads as well. 10/18/2012 www.onsemi.com 1 6. Monitor Output Voltages, given according to Equation 1. (eq. 1) 7. Monitor Current Sense Output voltages on appropriate connector. They should be max 2.55 V in steady state. The CSO voltages are proportional to output currents according to Equation 2. (eq. 2) 8. Compare your results with measured results in Table 2. V - meter A - meter Power Supply Load Load Power Supply A - meter V - meter V - meter V - meter Figure 1. General Test Setup Table 1: Required Equipment Equipment Ranges Power Supply 0 V 45 V / 1 A Load 0 mA 500 mA V - meter 0 V 20 V A - meter 0 mA 500 mA 10/18/2012 www.onsemi.com 2