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AS1383-BWLT-50 Datasheet(PDF) 3 Page - ams AG |
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AS1383-BWLT-50 Datasheet(HTML) 3 Page - ams AG |
3 / 22 page ams Datasheet Page 3 [v1-01] 2015-May-22 Document Feedback AS1383 − Pin Assignment Figure 4: Pin Assignment for WL-CSP Figure 5: Pin Description Note(s) and/or Footnote(s): 1. An optional Schottky diode can be connected between this pin and VOUT. Pin Assignments: Shows the TOP view pin assignment of the AS1383. Pin Number Pin Name Description A1 VIN Input Voltage. The AS1383 gets its start-up bias from VIN unless VOUT exceeds VIN, in which case the bias is derived from VOUT. Thus, once started, operation is completely independent from VIN. Operation is only limited by the output power level and the internal series resistance of the supply. A2 GND Signal and Power Ground B1 SW Switch Pin. Connect an inductor between this pin and VIN. Keep the PCB trace lengths as short and wide as is practical to reduce EMI and voltage overshoot. If the inductor current falls to zero, or pin EN is low, an internal 100Ω anti-ringing switch is connected from this pin to VIN to minimize EMI. (1) B2 VOUT Output Voltage. Bias is derived from VOUT when VOUT exceeds VIN. PCB trace length from VOUT to the output filter capacitor(s) should be as short and wide as is practical. C1 EN Active-High Enable Input. A logic LOW reduces the supply current to < 1μA. Connect to pin VIN for normal operation. C2 FB Feedback Pin. Feedback input to the gm error amplifier, connect this pin to VOUT Pin Assignment A2 C1 C2 B2 B1 A1 |
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