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TS2580 датащи(PDF) 3 Page - Taiwan Semiconductor Company, Ltd

номер детали TS2580
подробное описание детали  2A / 52KHz Buck Switching Regulator
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производитель  TSC [Taiwan Semiconductor Company, Ltd]
домашняя страница  http://www.taiwansemi.com
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TS2580 датащи(HTML) 3 Page - Taiwan Semiconductor Company, Ltd

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TS2580
2A / 52KHz Buck Switching Regulator
3/5
Version: B11
Pin Function Description
VIN
This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be presented
at this pin to minimize voltage transients and to supply the switching currents needed by the regulator.
Ground
Circuit ground
SW Output
Internal switch. The voltage at this pin switches between (+Vcc – Vsat) and approximately – 0.5V, with a duty cycle
of approximately Vout / Vcc. To minimize coupling to sensitive circuitry, the PC board copper area connected to this
pin should be minimized.
Adjustable
Adjustment Input
Enable
Allows the switching regulator circuit to be shutdown using logic level signals thus dropping the total input supply
current to approximately 100uA. Pulling this pin below a threshold voltage of approximately 1.3V turns the regulator
on, and pulling this pin above 1.3V (up to a maximum of Vcc) shuts the regulator down. If this shutdown feature is
not needed, the EN pin can be wired to the ground pin.
Typical Application Circuit
1. Adjustable output voltage version
Resistor select for output voltage setting
Vout
R1
R2
5V
4.7K
1.5K
5.6K
1.8K
3.3V
2.5K
1.5K
3.0K
1.8K
2.5V
1.8K
1.8K
1.8V
0.82K
1.8K
L1 recommend value (IOUT=2A)
Vout
2.5V
3.3V
5V
12V
VIN=12V
120uH
120uH
120uH
NA
VIN=24V
120uH
120uH
120uH
150uH


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