List of figures

Figure 1.

ST1PS02 application schematic ........................................................ 2

Figure 2.

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

Figure 3.

Block diagram .................................................................... 9

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, 50 mA load .................................................. 12

Figure 9.

100% mode, VOUT = 2.5 V, 50 mA load .................................................. 12

Figure 10.

VOUT change, 1.8 V to 2.5 V to 1.8 V, IOUT = 5 mA, VIN = 3.6 V.................................. 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.

Start-up, 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.

Start-up, VIN=3.6 V, VOUT=1.8 V, IOUT = 100 mA ............................................ 13

Figure 19.

Disable, VIN=3.6 V, VOUT = 1.8 V, IOUT = 100 mA ........................................... 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.

Start-up, VIN = 3.6 V, Vout2 = 1.8 V, no load ............................................... 14

Figure 24.

Disable, VIN = 3.6 V, Vout2 = 1.8 V, no load ............................................... 14

Figure 25.

Start-up, VIN = 3.6, Vout2 = 1.8 V, IOUT = 100 mA ........................................... 14

Figure 26.

Disable, VIN = 3.6 V, Vout2 = 1.8 V, IOUT = 100 mA .......................................... 15

Figure 27.

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

Figure 28.

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

ST1PS02

List of figures

DS13206 - Rev 1

page 22/23