Power Filter. TPS7A3501 Datasheet

TPS7A3501 Filter. Datasheet pdf. Equivalent

Part TPS7A3501
Description 1-A Power Filter
Feature Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS7A3501 .
Manufacture etcTI
Total Page 30 Pages
Datasheet
Download TPS7A3501 Datasheet



TPS7A3501
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS7A3501
SBVS228B – JULY 2013 – REVISED MARCH 2015
TPS7A3501 High PSRR, Low-Noise, 1-A Power Filter
1 Features
1 Regulates Input-to-Output Voltage:
– User-Programmable Input-to-Output Voltage
Regulation Range:
200 mV to 500 mV
• Power-Supply Rejection Ratio:
– 42 dB at 1 MHz
32 dB (360 kHz to 3.9 MHz)
• Low-Noise Output:
– 3.8 µVRMS (10 Hz to 100 kHz)
• Output Current: Up to 1 A
• Output Voltage Range: 1.21 V to 4.5 V
• Excellent Load Transient Response
• Stable With Ceramic Capacitors as Low as
10 µF
• Current Limit and Thermal Shutdown for
Fault Protection
• Available in a Low Thermal Resistance Package:
2-mm × 2-mm WSON-6
• Operating Temperature Range:
–40°C to 125°C
2 Applications
• Post DC-DC Converter Ripple Filtering
• Base Stations and Telecom Infrastructure
• Professional Audio
• Communications
• Imaging
• Test and Measurement
• Passive Filter Replacement
3 Description
The TPS7A3501 is a positive voltage, low-noise
(3.8-µVRMS) power filter capable of sourcing a 1-A
load suitable for quiet supply solutions. Power filters,
such as the TPS7A3501, provide voltage regulation
across the input and output terminals with high
efficiency (low insertion loss), and power-supply
rejection. The device is ideally suited as a noise filter
for 3.3-V, 2.5-V, and 1.8-V supplies at up to 1 A.
The input-to-output voltage regulation is also user-
programmable, from 200 mV to 500 mV, with a single
external resistor. If no resistor is used, the
TPS7A3501 provides 330 mV of input-to-output
voltage regulation. The device is stable with 10-µF
input and output ceramic capacitors and a 10-nF
noise-reduction ceramic capacitor.
The TPS7A3501 is fully specified over a wide
temperature of –40°C to 125°C. The device is offered
in a low thermal resistance, 2-mm × 2-mm, WSON-6
package. Unlike passive filters, the TPS7A3501
provides thermal and current protection for itself and
surrounding circuitry.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A3501
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN = 3.6 V
CIN = 10 µF
RNR
Typical Application Circuit
(VIN – VOUT) = 300 mV
+
IN
OUT
VOUT = 3.3 V
TPS7A3501
COUT = 10 µF
EN SENSE
NR GND
CNR = 1 µF
Load
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



TPS7A3501
TPS7A3501
SBVS228B – JULY 2013 – REVISED MARCH 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application ................................................. 15
8.3 Do's and Don'ts ....................................................... 18
9 Power Supply Recommendations...................... 18
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 19
10.3 Power Dissipation ................................................. 19
10.4 Estimating Junction Temperature ......................... 20
11 Device and Documentation Support ................. 21
11.1 Device Support...................................................... 21
11.2 Documentation Support ....................................... 21
11.3 Trademarks ........................................................... 21
11.4 Electrostatic Discharge Caution ............................ 21
11.5 Glossary ................................................................ 21
12 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
Changes from Revision A (October 2013) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Changed "free-air temperature" to "junction temperature" in Absolute Maximum Ratings condition statement ................... 5
• Changed Figure 14 to Figure 18: collected new data ............................................................................................................ 8
Changes from Original (July 2013) to Revision A
Page
• Changed document status to Production Data....................................................................................................................... 1
• Changed document title.......................................................................................................................................................... 1
• Deleted second sub-bullet from first Features bullet .............................................................................................................. 1
• Changed sub-bullets in Power-Supply Rejection Ratio and Low-Noise Output Features bullets .......................................... 1
• Changed Output Current, Transient Response, Ceramic Capacitors, and Package Features bullets .................................. 1
• Deleted Input Voltage Range Features bullet ........................................................................................................................ 1
• Added Output Voltage Range Features bullet........................................................................................................................ 1
• Added 4th to 7th Applications bullets ..................................................................................................................................... 1
• Changed 1st and 3rd paragraphs of Description section ....................................................................................................... 1
• Changed voltage regulation value in second Description paragraph ..................................................................................... 1
• Added changes to Typical Application Circuit ........................................................................................................................ 1
• Changed descriptions of IN, NR, OUT, and PowerPAD pins in Pin Functions table ............................................................. 4
• Added PowerPAD row to Pin Functions table ........................................................................................................................ 4
• Changed associated pins of Voltage parameter in Absolute Maximum Ratings table........................................................... 5
• Changed TJ Temperature range parameter minimum specification in Absolute Maximum Ratings table ............................. 5
• Changed conditions of Electrical Characteristics table .......................................................................................................... 6
• Changed VIN and VOUT parameter maximum specifications in Electrical Characteristics table.............................................. 6
• Added VUVLO(in) parameter to Electrical Characteristics table ................................................................................................. 6
• Changed VIN – VOUT voltage range, Vn, and Tsd parameters in Electrical Characteristics table............................................. 6
2 Submit Documentation Feedback
Copyright © 2013–2015, Texas Instruments Incorporated
Product Folder Links: TPS7A3501





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)