1
Getting started
1.1
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)
1.2
Electrical performance specification
Table 1.
Electrical performance specification (Ta = 25°C)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VIN
Input supply voltage
1.8
3.6
5.5
V
VIN_AUX
Auxiliary input supply voltage
0
V
IN
V
VOUT range
Programmable by D0, D1 and D2 (see
)
1.6
3.3
V
IOUT
Output current
400
mA
IOUT_AUX
Auxiliary output current
100
mA
Table 2.
Output voltage settings
Device
D2
D1
D0
V
OUT
0
0
0
1.8 V
0
0
1
3.3 V
0
1
0
2.8 V
0
1
1
2.7 V
1
0
0
3.0 V
1
0
1
2.1 V
1
1
0
1.6 V
1
1
1
2.5 V
UM2944
Getting started
UM2944
-
Rev 1
page 2/13
