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TPS79401 Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce TPS79401
Description  ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 250-mA LOW-DROPOUT LINEAR REGULATORS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS79401 Fiches technique(HTML) 4 Page - Texas Instruments

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Thermal
Shutdown
Bandgap
Reference
1.225 V
VIN
Current
Sense
R2
IN
GND
EN
OUT
SHUTDOWN
Vref
UVLO
ILIM
External to
the Device
FB
R1
UVLO
250 k
NR(1)
(1) Not Available on DCQ (SOT223) options.
Quickstart
_
+
Thermal
Shutdown
VIN
Current
Sense
R1
R2
IN
GND
EN
OUT
SHUTDOWN
Vref
UVLO
ILIM
Bandgap
Reference
1.225 V
UVLO
250 k
NR
Quickstart
R2 = 40k
TPS794xx
SLVS349E – NOVEMBER 2001 – REVISED DECEMBER 2005
FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION
FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION
Terminal Functions
TERMINAL
DESCRIPTION
DGN
DCQ
NAME
(MSOP)
(SOT223)
Connecting an external capacitor to this pin bypasses noise generated by the internal bandgap, which
NR
4
5
improves power-supply rejection and reduces output noise.
The EN terminal is an input that enables or shuts down the device. When EN is a logic high, the device
EN
6
1
is enabled. When the device is a logic low, the device is in shutdown mode.
FB
3
5
Feedback input voltage for the adjustable device.
GND
5, PAD
3, 6
Regulator ground
IN
8
2
Unregulated input to the device.
NC
2, 7
No internal connection.
OUT
1
4
Regulator output
4
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