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ST1S12GR bảng dữ liệu(PDF) 7 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L
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ST1S12xx
Electrical characteristics
7/20
Note:
1
Guaranteed by design, but not tested in production.
Table 7.
Electrical characteristics for ST1S12G12
VIN =VEN = 3 V, CIN = 4.7 µF, CO =10 µF, L = 2.2 µH, TJ = -40 to 125 °C (unless otherwise
specified. Typical values are referred to 25 °C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
OUT
Output feedback pin
TJ =-40 to 125°C
1.164
1.2
1.236
V
IO
VO pin bias current
15
20
µA
VIN
Minimum input voltage
IO= 10mA to 0.7A
2.5
V
IQ
Quiescent current
VIN =VEN, VFB=1.5V
500
600
µA
VEN = 0, T = -40°C to 85°C
1
µA
IO
Output current
VIN = 2.5 to 5.5V Note 1
0.7
A
VEN
Enable threshold
Device ON, VIN = 2.5 to 5.5V
1.5
V
Device OFF
0.5
IEN
Enable pin current
1
µA
%VO/ΔVIN Reference line regulation
VIN = 2.5V to 5.5V Note 1
0.05
0.1
%VO/ΔVIN
%VO/ΔIO Reference load regulation
IO = 10mA to 700mA Note 1
0.0025 0.005
%VO/mA
PWMfS
PWM switching frequency
1.16
1.7
2.08
MHz
RDSON-N NMOS switch on resistance
ISW = 100 mA
0.25
0.4
Ω
RDSON-P PMOS switch on resistance
ISW = 100 mA
0.25
0.45
Ω
ISWL
Switching current limitation
Note 1
1.6
A
ν
Efficiency Note 1
IO = 10mA to 100mA
80
%
IO = 100mA to 0.7A
85
TSHDN
Thermal shutdown
130
150
°C
THYS
Thermal shutdown hysteresis
15
°C
%VO/ΔIO Load transient response
IO = 100mA to 700mA, TA = 25°C
tR = tF ≥ 200ns, CO=22µF Note 1
-5
+5
%VO
%VO/ΔIO
Short circuit removal
response
IO = 10mA to IO=short, TA = 25°C
Note 1
-10
+10
%VO


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