Datasheet

Typical performance characteristics ST1S15
8/28 DocID023280 Rev 3
5 Typical performance characteristics
Figure 3. Efficiency vs. output current
(V
OUT
= 1.82 V)
Figure 4. Efficiency vs. output current
(V
OUT
= 2.8 V)
V
EN
= V
IN
, I
OUT
= 1 mA to 500 mA
V
EN
= V
IN
, I
OUT
= 1 mA to 500 mA
Figure 5. Output voltage vs. input voltage Figure 6. Supply current vs. input voltage in
auto mode
V
IN
= 0 to 5.5 V (step 0.1 V), I
OUT
= 500 mA, Mode = GND,
V
EN
= V
IN
V
IN
= 2.5 V to 5.5 V, Mode = GND, V
OUT
= 1.82 V, V
EN
= V
IN
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Efficiency [%]
I
OUT
[mA]
Vin= 2.5V PWM Mode
Vin= 2.5V PFM Mode
Vin= 3.6V PWM Mode
Vin= 3.6V PFM Mode
Vin= 4.5V PWM Mode
Vin= 4.5V PFM Mode
Vin= 5.5V PWM Mode
Vin= 5.5V PFM Mode
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Vin= 3.2V PWM Mode
Vin= 3.2V PFM Mode
Vin= 3.6V PWM Mode
Vin= 3.6V PFM Mode
Vin= 4.2V PWM Mode
Vin= 4.2V PFM Mode
Vin= 5.0V PWM Mode
Vin= 5.0V PFM Mode
I
OUT
[mA]
Efficiency [%]
T=85 °C
T=55 °C
T=25 °C
T=0°C
T= -25°C
T= -40°C
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Output Voltage [V]
Input Voltage [V]
35
40
45
50
55
60
65
2 2.5 3 3.5 4 4.5 5 5.5 6
ISupply [µA]
Input Voltage [V]
T= 85°C
T= 25°C
T= 0°C
T= -40°C