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FAN1581M25X データシート(PDF) 2 Page - Fairchild Semiconductor

部品番号 FAN1581M25X
部品情報  5A Adjustable/Fixed Ultra Low Dropout Linear Regulator
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メーカー  FAIRCHILD [Fairchild Semiconductor]
ホームページ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN1581M25X データシート(HTML) 2 Page - Fairchild Semiconductor

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FAN1581
PRODUCT SPECIFICATION
2
REV. 1.2.0 11/6/03
Pin Assignments
Pin Definitions
Internal Block Diagram
Pin
Number
Pin Name
Pin Function Descrition
1
VSense
Remote Voltage Sense. Connect this pin to the load to permit true remote sensing and
avoid trace drops.
2
ADJ/GND
Adjust or Ground. On the FAN1581, this pin forms the feedback to determine the output
voltage. On the FAN1581-1.2, -1.5 and -2.5, connect this pin to ground.
3
VOUT
Output Voltage. This pin and the tab are output.
4
VCNTL
Control Voltage. This pin draws small-signal power to control the FAN1581 circuitry.
Connect to a voltage higher than VIN, as shown in the applications circuits.
5
VIN
Input Voltage.
FRONT VIEW
12 3 4 5
FRONT VIEW
12 3 4 5
FAN1581M-1.2,
-1.5, -2.5
FAN1581M
FRONT VIEW
FAN1581D
FRONT VIEW
FAN1581D-1.2,
-1.5, -2.5
FRONT VIEW
FAN1581T
5-Lead Plastic TO-263
Θ
JC=3°C/W*
Tab is out.
5-Lead TO-220
Θ
JC=3°C/W* Tab is VOUT.
5-Lead Plastic TO-252 DPAK
Θ
JC=3°C/W*
Tab is out.
12
3
4
5
1
2
3
4
5
12
3
4 5
*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane,
θ
JA can vary from
30
°C/W to more than 40 °C/W. Other mounting techniques can provide a thermal resistance lower than 30 °C/W.
Current
Limit
Thermal
Shutdown
Vref
Vin, Power
Output
Sense
Adj
VCNTL, Control
2
1
3
5
4
Voltage Loop
Amplifier


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