Datasheet

Electrical characteristics ST1S03
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4 Electrical characteristics
Table 5. Electrical characteristics (V
IN_SW
= V
IN_A
= 5 V, C
I
= 4.7 µF, C
O
= 22 µF, L1 = 3.3 µH,
T
J
= 0 to 125 °C, unless otherwise specified. Typical values are referred to 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
FB Feedback voltage I
O
= 100mA 784 800 816 mV
I
FB
V
FB
pin bias current 600 nA
I
Q
Quiescent current No Switching 2.5 mA
I
O
Output current V
IN
= 3V to 16V 1.5 A
I
MIN
Minimum output current 1 mA
%V
O
/ΔV
IN
Reference line regulation V
IN
= 3V to 16V 0.032 0.06
%V
O
/
ΔV
IN
%V
O
/ΔI
O
Reference load regulation I
O
= 10mA to 1.2A 0.0014 0.003
%V
O
/
mA
PWM f
S
PWM switching frequency
(1)
1. Guaranteed by design, but not tested in production.
V
FB
= 0.8V, T
A
=25°C 1.2 1.5 1.8 MHz
D
MAX
Maximum duty cycle 87 %
I
SWL
Switching current limitation 1.65 A
V
DS
Switch V
DS
I
SW
= 750 mA 200 350 mV
E Efficiency I
O
=10mA to 1.2A 70 %
T
SHDN
Thermal shut down
(1)
130 150 °C
T
HYS
Thermal shut down hysteresis
(1)
15 °C
ΔV
O
/ΔI
O
Load transient response
(1)
I
O
= 100mA to 700mA
t
R
= t
F
≥ 100ns, T
A
= 25°C
-5 +5 %V
O
ΔV
O
/ΔI
O
@
I
O
=short
Short circuit removal response
(1)
I
O
= 10mA to short, T
A
= 25°C +5 %V
O