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ST1S40 Datasheet(PDF) 4 Page - STMicroelectronics

Part # ST1S40
Description  3 A DC step-down switching regulator
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S40 Datasheet(HTML) 4 Page - STMicroelectronics

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Maximum ratings
ST1S40
4/29
DocID17928 Rev 5
2
Maximum ratings
3
Thermal data
Table 2. Absolute maximum ratings
Symbol
Parameter
Value
Unit
VINSW Power input voltage
-0.3 to 20
V
VINA
Input voltage
-0.3 to 20
VEN
Enable voltage
-0.3 to VINA
VSW
Output switching voltage
-1 to VIN
-2 V to -1 V for 50 nsec
VFB
Feedback voltage
-0.3 to 2.5
IFB
FB current
-1 to +1
mA
PTOT
Power dissipation at TA < 60 °C
2.25 (HSOP-8/DFN4x4);
1.6 SO8-BW
W
TOP
Operating junction temperature range
-40 to 150
°C
Tstg
Storage temperature range
-55 to 150
°C
Table 3. Thermal data
Symbol
Parameter
Value
Unit
RthJA
Maximum thermal resistance junction-ambient(1)
1. Package mounted on the demonstration board.
VFQFPN
40
°C/W
HSOP-8
40
SO8-BW
55



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