ST1S03 STMicroelectronics, ST1S03 Datasheet - Page 6

• Manufacturer Part Number: ST1S03
• Description: 1.5 A, 1.5 MHz adjustable, step-down switching regulator
• Manufacturer: STMicroelectronics

Specifications of ST1S03

• Typical Efficiency: > 70% over all operating conditions
• Not Switching Quiescent Current: max 2.5mA over temperature range
• Switch Vds: max 350mV @ ISW=750mA

4
Table 5.
1. Guaranteed by design, but not tested in production.
6/16
ΔV
%V
%V
I
Symbol
PWM f
ΔV
O
T
D
T
O
I
=short
I
V
SHDN
SWL
O
FB
I
O
MIN
MAX
HYS
/ΔI
I
I
O
FB
E
Q
O
DS
/ΔV
/ΔI
/ΔI
O
O
S
@
O
IN
Feedback voltage
V
Quiescent current
Output current
Minimum output current
Reference line regulation
Reference load regulation
PWM switching frequency
Maximum duty cycle
Switching current limitation
Switch V
Efficiency
Thermal shut down
Thermal shut down hysteresis
Load transient response
Short circuit removal response
Electrical characteristics (V
T
Electrical characteristics
FB
J
= 0 to 125 °C, unless otherwise specified. Typical values are referred to 25 °C)
pin bias current
DS
Parameter
(1)
(1)
(1)
(1)
(1)
IN_SW
I
No Switching
V
V
I
V
I
I
I
t
I
O
O
SW
O
O
R
O
IN
IN
FB
= 100mA to 700mA
= t
= 100mA
= 10mA to 1.2A
=10mA to 1.2A
= 10mA to short, T
= 3V to 16V
= 3V to 16V
= 750 mA
= 0.8V, T
F
= V
≥ 100ns, T
Test conditions
IN_A
A
= 5 V, C
=25°C
A
= 25°C
A
= 25°C
I
= 4.7 µF, C
Min.
1.65
784
130
1.5
1.2
70
O
-5
1
= 22 µF, L1 = 3.3 µH,
0.0014
0.032
Typ.
200
800
150
1.5
87
15
0.003
Max.
0.06
816
600
350
2.5
1.8
+5
+5
%V
%V
%V
%V
ΔV
MHz
Unit
mV
mA
mA
mV
mA
nA
°C
°C
%
%
A
A
IN
O
O
O
O
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