Low-Dropout Regulator. TPS7A37 Datasheet

TPS7A37 Regulator. Datasheet pdf. Equivalent

Part TPS7A37
Description Low-Dropout Regulator
Feature Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS7A37 SB.
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Total Page 30 Pages
Datasheet
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TPS7A37
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS7A37
SBVS220B – MARCH 2013 – REVISED AUGUST 2015
TPS7A37 1% High-Accuracy, 1-A, Low-Dropout Regulator With Reverse Current
Protection
1 Features
1 Stable with 1-μF or Larger Ceramic Output
Capacitor
• Input Voltage Range: 2.2 V to 5.5 V
• Ultralow Dropout Voltage:
– 200-mV Maximum at 1 A
• Excellent Load Transient Response—Even With
Only 1-μF Output Capacitor
• NMOS Topology Delivers Low Reverse Leakage
Current
• Excellent Accuracy:
– 0.23% Nominal Accuracy
– 1% Overall Accuracy Over Line, Over Load,
and Over Temperature
• Less Than 20-nA typical IQ in Shutdown Mode
• Thermal Shutdown and Current Limit for Fault
Protection
2 Applications
• Point of Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
• Post-Regulation for Switching Supplies
• Portable and Battery-Powered Equipment
SPACE
Typical Application Circuit (Adjustable Version)
Optional
VIN IN OUT
VOUT
TPS7A3701
1.0 mF
EN GND FB
OFF
ON
3 Description
The TPS7A37 family of linear low-dropout (LDO)
voltage regulators uses an NMOS pass element in a
voltage-follower configuration. This topology is
relatively insensitive to output capacitor value and
ESR, allowing a wide variety of load configurations.
Load transient response is excellent, even with a
small 1-μF ceramic output capacitor. The NMOS
topology also allows very low dropout.
The TPS7A37 family uses an advanced BiCMOS
process to yield high precision while delivering very
low dropout voltages and low ground pin current.
Current consumption, when not enabled, is under 20
nA and ideal for portable applications. These devices
are protected by thermal shutdown and foldback
current limit.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A37
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit (Fixed Version)
VIN IN OUT VOUT
TPS7A37xx
EN GND
OFF
ON
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.



TPS7A37
TPS7A37
SBVS220B – MARCH 2013 – REVISED AUGUST 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 ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ...................................... 3
6.2 ESD Ratings.............................................................. 3
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagrams ..................................... 11
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Applications ................................................ 16
9 Power Supply Recommendations...................... 19
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 19
10.3 Thermal Considerations ........................................ 20
10.4 Power Dissipation ................................................. 20
10.5 Estimating Junction Temperature ........................ 21
11 Device and Documentation Support ................. 23
11.1 Documentation Support ........................................ 23
11.2 Trademarks ........................................................... 23
11.3 Electrostatic Discharge Caution ............................ 23
11.4 Glossary ................................................................ 23
12 Mechanical, Packaging, and Orderable
Information ........................................................... 23
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (July 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 Internal Reference (VFB) parameter typ value ....................................................................................................... 5
Changes from Original (March 2013) to Revision A
Page
• Changed device status to Production Data ............................................................................................................................ 1
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