List of figures

Figure 1.

ST1PS03 application schematic ........................................................ 2

Figure 2.

TQFN12 package (top through view) ..................................................... 3

Figure 3.

Block diagram .................................................................... 8

Figure 4.

Efficiency vs. load, VOUT = 1.8 V....................................................... 11

Figure 5.

Efficiency vs. VIN, VOUT = 1.8 V ....................................................... 11

Figure 6.

Efficiency vs. load, VOUT = 2.5 V....................................................... 11

Figure 7.

Efficiency vs. VIN, VOUT = 2.5 V ....................................................... 11

Figure 8.

100% mode, VOUT = 1.8 V, IOUT 100 mA, Rload = 18 Ohm, VEN = VIN, AUX = GND .................. 12

Figure 9.

100% mode, VOUT = 3.3 V, IOUT 100 mA, Rload = 33 Ohm, VEN = VIN, AUX = GND .................. 12

Figure 10.

Vin = 3. 6 V, Vout = 1.8 to 3.3 V, Rload 33 Ohm, AUX = GND, VIN_AUX = floating ..................... 12

Figure 11.

Output ripple, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 10 µA ....................................... 12

Figure 12.

Output ripple, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 1 mA........................................ 12

Figure 13.

Output ripple, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 50 mA ....................................... 12

Figure 14.

Output ripple, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 150 mA ...................................... 13

Figure 15.

Output ripple, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 250 mA ...................................... 13

Figure 16.

Startup, VIN = 3.6 V, VOUT = 1.8 V, no load ................................................ 13

Figure 17.

Disable, VIN = 3.6 V, VOUT = 1.8 V, no load................................................ 13

Figure 18.

Startup, VIN = 3.6 V, VOUT = 1.8 V, RLOAD = 18 Ohm ......................................... 13

Figure 19.

Disable, VIN = 3.6 V, VOUT = 1.8 V, RLOAD = 18 Ohm......................................... 13

Figure 20.

Load transient, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 50 µA to 10 mA ............................... 14

Figure 21.

Load transient, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 0 to 100 mA .................................. 14

Figure 22.

Load transient, VIN = 3.6 V, VOUT = 1.8 V, IOUT = 10 to 100 mA ................................. 14

Figure 23.

Startup, VIN = 3.6 V, VIN_AUX = 1.8 V, VOUT = 1.8 V, VOUT_AUX = 1.8 V, no load ................... 14

Figure 24.

Disable, VIN = 3.6 V, VIN_AUX = 1.8 V, VOUT = 1.8 V, VOUT_AUX = 1.8 V, no load ................... 15

Figure 25.

Startup, VIN = 3.6, VIN_AUX = 1.8 V, VOUT = 1.8 V, VOUT_AUX = 1.8 V, Rload = 18 Ohm, IOUT = 100 mA ... 15

Figure 26.

Disable, VIN = 3.6 V, VIN_AUX = 1.8 V, VOUT = 1.8 V, VOUT_AUX = 1.8 V, Rload = 18 Ohm, IOUT = 100 mA . 15

Figure 27.

Startup, VIN = 3.6 V, VIN_AUX = 3.3 V, VOUT = 3.3 V, VOUT_AUX = 3.3 V, no load ................... 15

Figure 28.

Disable, VIN = 3.6 V, VIN_AUX = 1.8 V, VOUT = 3.3 V, VOUT_AUX = 3.3 V, no load ................... 15

Figure 29.

TQFN12 (2.0x1.7x0.55 mm) package outline .............................................. 16

Figure 30.

TQFN12 (2.0x1.7x0.55 mm) recommended footprint ......................................... 17

Figure 31.

TQFN12 (2.0x1.70x0.55 mm) carrier tape outline ........................................... 18

Figure 32.

TQFN12 (2.0x1.70x0.55 mm) tape orientation ............................................. 18

Figure 33.

TQFN12 (2.0x1.70x0.55 mm) reel outline................................................. 19

ST1PS03

List of figures

DS13801 - Rev 1

page 24/25