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ST1S12XX データシート(PDF) 6 Page - STMicroelectronics

部品番号 ST1S12XX
部品情報  Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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Electrical characteristics
ST1S12xx
6/20
4
Electrical characteristics
Note:
1
Guaranteed by design, but not tested in production.
Table 6.
Electrical characteristics for ST1S12G
VIN =VEN = 3.6 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
FB
Feedback voltage
TJ =-40 to 125°C
582
600
618
V
IFB
VFB pin bias current
-50
50
nA
VIN
Minimum input voltage
IO= 10mA to 0.7A
2.5
V
IQ
Quiescent current
VIN =VEN, VFB=0.65V
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
DMAX
Maximum duty cycle
100
%
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, VO = 1.8V
80
%
IO = 100mA to 0.7A, VO = 1.8V
90
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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