List of figures

ST1S15

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DocID023280 Rev 4

List of figures

Figure 1: ST1S15 application schematic ....................................................................................................5

Figure 2: Pin connections (top view)...........................................................................................................6

Figure 3: Efficiency vs. output current ......................................................................................................10

Figure 4: Output voltage vs. input voltage ................................................................................................10

Figure 5: Supply current vs. input voltage in auto mode ..........................................................................10

Figure 6: Supply current vs. input voltage in PWM mode.........................................................................10

Figure 7: Output voltage vs. output current ..............................................................................................10

Figure 8: Frequency vs. input voltage.......................................................................................................10

Figure 9: Output voltage vs. output current VIN=3.6 V ..............................................................................11

Figure 10: Mode transition vs. input voltage .............................................................................................11

Figure 11: Mode transition PFM to PWM..................................................................................................11

Figure 12: Output voltage ripple (no-load) ................................................................................................11

Figure 13: Output voltage ripple ...............................................................................................................11

Figure 14: Line transient ...........................................................................................................................11

Figure 15: Load transient IOUT = 50 to 250 mA .........................................................................................12

Figure 16: Load transient IOUT = 250 to 50 mA .........................................................................................12

Figure 17: Enable startup .........................................................................................................................12

Figure 18: VIN startup ................................................................................................................................12

Figure 19: Block schematic.......................................................................................................................13

Figure 20: PFM to PWM transition............................................................................................................14

Figure 21: PWM to PFM transition............................................................................................................15

Figure 22: Flip Chip layout recommended (not in scale) ..........................................................................18

Figure 23: Flip Chip 6 package outline .....................................................................................................21

Figure 24: Flip Chip 6 footprint recommended data (mm)........................................................................23

Figure 25: Tape and reel outline ...............................................................................................................24