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TPS74401RGWTG4 Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TPS74401RGWTG4
Description  3.0A Ultra-Low Dropout Linear Regulator
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS74401RGWTG4 Fiches technique(HTML) 5 Page - Texas Instruments

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5
5QFN(RGW)
´
Package
TopView
¾
IN
IN
IN
PG
BIAS
OUT
OUT
OUT
NC
FB
TPS74401
6
7
8
9
10
20
19
18
17
16
GND
7-Lead
DDPAK(KTW)
Surface-Mount
OUT
GND BIAS
IN
FB
SS
1 2 3 4 5 6
EN
7
PIN DESCRIPTIONS
TPS74401
SBVS066D – DECEMBER 2005 – REVISED AUGUST 2006
NAME
KTW (DDPAK)
RGW (QFN)
DESCRIPTION
IN
5
5–8
Unregulated input to the device.
Enable pin. Driving this pin high enables the regulator. Driving this pin low puts
EN
7
11
the regulator into shutdown mode. This pin must not be left floating.
SS
1
15
Soft-Start pin. A capacitor connected on this pin to ground sets the start-up
time. If this pin is left floating, the regulator output soft-start ramp time is
typically 100
µs.
BIAS
6
10
Bias input voltage for error amplifier, reference, and internal control circuits.
Power-Good (PG) is an open-drain, active-high output that indicates the status
of VOUT. When VOUT exceeds the PG trip threshold, the PG pin goes into a
high-impedance state. When VOUT is below this threshold the pin is driven to a
PG
N/A
9
low-impedance state. A pull-up resistor from 10k
Ω to 1MΩ should be
connected from this pin to a supply up to 5.5V. The supply can be higher than
the input voltage. Alternatively, the PG pin can be left floating if output
monitoring is not necessary.
This pin is the feedback connection to the center tap of an external resistor
FB
2
16
divider network that sets the output voltage. This pin must not be left floating.
OUT
3
1, 18–20
Regulated output voltage. No capacitor is required on this pin for stability.
No connection. This pin can be left floating or connected to GND to allow better
NC
N/A
2–4, 13, 14, 17
thermal contact to the top-side plane.
GND
4
12
Ground
PAD/TAB
Should be soldered to the ground plane for increased thermal performance.
5
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