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LA59700MC Datasheet(PDF) 4 Page - ON Semiconductor

No. de pieza LA59700MC
Descripción Electrónicos  Adjustable Voltage Type Regulator
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
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LA59700MC Datasheet(HTML) 4 Page - ON Semiconductor

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LA59700MC
No.A2169-4/9
Formula of Output Voltage Adjustment
VOUT = VADJ (≈1.25V) × (R1+R2)/R1
Note: Set the resistance of R1 and R2 so that a large enough current flows through the two resistors, making the effect
on the source current from the ADJ pin negligible.
Startup Method
This IC can be started in one of the following two ways:
(1) Start the IC by turning on and off the EN pin after applying power to VCC1 and VCC2.
(2) Short circuit the VCC1, VCC2, and EN pins.
When using method (1), apply power to VCC1 and VCC2 simultaneously, or in the order of VCC1 to VCC2, then to
the EN pin.
To shutdown the IC, follow the start-up procedure in reverse order.
Pin Function
Pin No.
Pin name
Function
Equivalent circuit
1
OUT
Output.
VCC1
VCC2
OUT
GND
30k
Ω
2
ADJ
Adjustable input.
VCC1
GND
1.3k
Ω
2k
Ω
ADJ
3
NC
No connection.
4
GND
Ground. Connect to Pin 5 internally.
5
GND
Ground. Connect to Pin 4 internally.
6
EN
Chip Enable.
(High Enable)
VCC1
GND
EN
20k
Ω
55k
Ω
105k
Ω
7
VCC1
Analog power supply.
8
VCC2
Output power supply.
*4 When you use this IC, Please short-circuit Exposed-Pad and GND-pin on the IC mounting side.


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