Getting started. STMicroelectronics UM2944 Steval-1PS03A Evaluation Board Based on 1PS03AQTR, UM2944, STEVAL-1PS03A

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1.2

UM2944

Getting started

Getting started

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Features

1.8 to 5.5 V input operating range

Up to 400 mA output current capability

Tiny external components: L = 2.2 µH typ

Dynamically selectable output voltages from 1.6 to 3.3 V

Output voltage Power Good

Independent load switch (AUX control input)

WEEE and RoHS compliant (hardware only)

Electrical performance specification

Symbol

VIN

VIN_AUX

VOUT range

IOUT

IOUT_AUX

Table 1. Electrical performance specification (Ta = 25°C)

Input supply voltage

Auxiliary input supply voltage

Parameter

Programmable by D0, D1 and D2 (see

Table 2

)

Output current

Auxiliary output current

Min.

1.8

0

1.6

Typ.

3.6

Max.

5.5

V

IN

3.3

400

100

V mA mA

V

Unit

V

ST1PS03

Device

Table 2. Output voltage settings

D2 D1

0

0

0

0

1

1

1

1

1

1

0

0

0

0

1

1

0

1

0

1

0

1

0

1

D0

1.8 V

3.3 V

2.8 V

2.7 V

3.0 V

2.1 V

1.6 V

2.5 V

V

OUT

UM2944 - Rev 1 page 2/13