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TPS74901KTWRG3 Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce TPS74901KTWRG3
Description  3-A Low Dropout Linear Regulator With Programmable Soft-Start
Download  36 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS74901KTWRG3 Fiches technique(HTML) 3 Page - Texas Instruments

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OUT
OUT
FB
SS
GND
10
9
8
7
6
IN
IN
PG
BIAS
EN
1
2
3
4
5
Thermal
Pad
IN
IN
IN
PG
BIAS
OUT
OUT
OUT
NC
FB
6
7
8
9
10
20
19
18
17
16
1
2
3
4
5
6
7
3
TPS74901
www.ti.com
SBVS082I – JUNE 2007 – REVISED MAY 2016
Product Folder Links: TPS74901
Submit Documentation Feedback
Copyright © 2007–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
RGW Package
20-Pin VQFN
Top View
KTW Package
7-Pin DDPAK/TO-263
Top View
DRC Package
10-Pin VSON with Thermal Pad
Top View
Pin Functions
PIN
I/O
DESCRIPTION
NAME
DDPAK/TO-263
VQFN
VSON
BIAS
6
10
4
I
Bias input voltage for error amplifier, reference, and internal control
circuits.
EN
7
11
5
I
Enable pin. Driving this pin high enables the regulator. Driving this pin
low puts the regulator into shutdown mode. This pin must not be left
floating.
FB
2
16
8
I
This pin is the feedback connection to the center tap of an external
resistor divider network that sets the output voltage. This pin must not
be left floating.
GND
4
12
6
Ground
IN
5
5, 6, 7, 8
1, 2
I
Unregulated input to the device.
NC
2, 3, 4, 13,
14, 17
No connection. This pin can be left floating or connected to GND to
allow better thermal contact to the top-side plane.
OUT
3
1, 18, 19,
20
9, 10
O
Regulated output voltage. A small capacitor (total typical capacitance
≥ 2.2 µF, ceramic) is needed from this pin to ground to assure stability.
PG
9
3
O
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 low-impedance state. A pullup resistor
from 10 k
Ω to 1 MΩ must be connected from this pin to a supply up to
5.5 V. The supply can be higher than the input voltage. Alternatively,
the PG pin can be left floating if output monitoring is not necessary.
SS
1
15
7
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.
Thermal Pad
Solder to the ground plane for increased thermal performance.


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