link to page 10 ADP1715/ADP1716PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONSEN 18GNDEN 18GNDEN 18GNDADP1715ADP1715IN 27GNDIN 27GNDIN 2ADP17167GNDFIXEDADJUSTABLEOUT 36GND3636TOP VIEW 4 OUTGNDTOP VIEW 5 OUTGNDTOP VIEW 6 -00 -00 -00 SS 4(Not to Scale)5GNDADJ 4(Not to Scale)5GNDTRK 4(Not to Scale)5GND 6110 6110 6110 0 0 0 Figure 4. 8-Lead MSOP (RM-Suffix) Figure 5. 8-Lead MSOP (RM-Suffix) Figure 6. 8-Lead MSOP (RM-Suffix) Table 4. Pin Function Descriptions ADP1715ADP1715FixedAdjustableADP1716Pin No.Pin No.Pin No.MnemonicDescription 1 1 1 EN Enable Input. Drive EN high to turn on the regulator; drive it low to turn off the regulator. For automatic startup, connect EN to IN. 2 2 2 IN Regulator Input Supply. Bypass IN to GND with a 2.2 μF or greater capacitor. 3 3 3 OUT Regulated Output Voltage. Bypass OUT to GND with a 2.2 μF or greater capacitor. 4 SS Soft Start. A capacitor connected to this pin determines the soft-start time. 4 ADJ Adjust. A resistor divider from OUT to ADJ sets the output voltage. 4 TRK Track. The output will follow the voltage placed on the TRK pin. (See the Theory of Operation section for a more detailed description.) 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 GND Ground. Rev. 0 | Page 5 of 20 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION SOFT-START FUNCTION (ADP1715) ADJUSTABLE OUTPUT VOLTAGE (ADP1715 ADJUSTABLE) TRACK MODE (ADP1716) ENABLE FEATURE APPLICATION INFORMATION CAPACITOR SELECTION CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE