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7404 데이터시트(PDF) 3 Page - STMicroelectronics

부품명 7404
상세설명  TRIPLE VOLTAGE REGULATOR
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제조업체  STMICROELECTRONICS [STMicroelectronics]
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ST3M01
3/11
CONNECTION DIAGRAM (top view)
PIN DESCRIPTION
Pin N°
Symbol
Name and Function
1
GND SW
Switching Ground. Must be low impedance; solder directly to GND plane
2
GND SW
Switching Ground. Must be low impedance; solder directly to GND plane
3
Virtual GND
Virtual GND. Open Drain N-Cnannel MOSFET: must be high impedance when the
Low Battery condition is detected.
4
LBO
Low Battery Output. Open Drain N-Cnannel MOSFET: sinks current when the
input voltage drops below 2V typically.
5VREF
Reference Voltage Output. Bypass with 0.1
µF to improve the linears V
REF
thermal noise performance
.
6
IN Linear
Linear Input. Must be connected togheter with IN SW to the input supply.
7OUT LB
Linear B Output port. 1.9V typically.
8
SHDN
Shutdown Input. Disables the SMPS and LA output, but the LB, the
referencevoltage and the low batery comparator remain active.
9
GND Signal
Signal GND. Must be connected togheter with the Switching Ground.
10
OUT LA
Linear A Output port. 3V typically.
11
OUT DC/DC
DC/DC Output Port: 3.3V typically.
12
IN SW
SMPS Input. Must be connected togheter with IN_Linear to the input supply.
13
LX
1.5A N-Channel Power MOSFET Drain.
14
LX
1.5A N-Channel Power MOSFET Drain.


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