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TPS72301 Datasheet Preview

TPS72301 Datasheet

200mA Low-Noise High-PSRR Negative Output Low-Dropout Linear Regulators

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TPS72301, TPS72325
SLVS346C – SEPTEMBER 2003 – REVISED SEPTEMBER 2014
TPS723xx 200mA Low-Noise, High-PSRR
Negative Output Low-Dropout Linear Regulators
1 Features
1 Ultralow Noise: 60 μVRMS Typical
• High PSRR: 65 dB Typical at 1 kHz
• Low Dropout Voltage: 280 mV Typical at 200 mA,
2.5 V
• Available in –2.5-V and Adjustable (–1.2 V to
–10 V) Versions
• Stable With a 2.2-μF Ceramic Output Capacitor
• Less Than 2-μA Typical Quiescent Current in
Shutdown Mode
• 2% Overall Accuracy
(Line, Load, Temperature)
• Thermal and Over-Current Protection
• SOT23-5 (DBV) Package
• SOT-5 (DDC) Package
• Operating Junction Temperature Range: –40°C to
125°C
2 Applications
• Optical Drives
• Optical Networking
• Noise Sensitive Circuitry
• GaAs FET Gate Bias
• Video Amplifiers
3 Description
The TPS723xx family of low-dropout (LDO) negative
voltage regulators offers an ideal combination of
features to support low noise applications. These
devices are capable of operating with input voltages
from –10 V to –2.7 V, and support outputs from –10 V
to –1.2 V. These regulators are stable with small, low-
cost ceramic capacitors, and include enable (EN) and
noise reduction (NR) functions. Thermal short-circuit
and over-current protections are provided by internal
detection and shutdown logic. High PSRR (65 dB at
1 kHz) and low noise (60 μVRMS) make the TPS723xx
ideal for low-noise applications.
The TPS723xx uses a precision voltage reference to
achieve 2% overall accuracy over load, line, and
temperature variations. Available in a small SOT23-5
package, the TPS723xx family is fully specified over
a temperature range of –40°C to 125°C.
Device Information(1)
PART NUMBER
PACKAGE(2)
BODY SIZE (NOM)
TPS723xx
SOT-23 (5)
SOT (5)
2.90 mm x 1.60 mm
2.90 mm x 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
(2) The two SOT23 packages are identical in size, but the SOT
package is thinner.
Typical Application Circuit
2.2 µF
2 IN
OUT 5
2.2 µF
3
EN
NR 4
GND
1
10 nF
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.




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TPS72301 Datasheet Preview

TPS72301 Datasheet

200mA Low-Noise High-PSRR Negative Output Low-Dropout Linear Regulators

No Preview Available !

TPS72301, TPS72325
SLVS346C – SEPTEMBER 2003 – REVISED SEPTEMBER 2014
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......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 Handling Ratings....................................................... 4
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........................................ 12
8 Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Application .................................................. 13
8.3 Do's and Don'ts ....................................................... 14
9 Power-Supply Recommendations...................... 15
10 Layout................................................................... 15
10.1 Layout Guidelines ................................................. 15
10.2 Layout Example .................................................... 15
10.3 Power Dissipation ................................................. 15
10.4 Thermal Protection................................................ 15
11 Device and Documentation Support ................. 16
11.1 Device Support...................................................... 16
11.2 Related Links ........................................................ 16
11.3 Trademarks ........................................................... 16
11.4 Electrostatic Discharge Caution ............................ 16
11.5 Glossary ................................................................ 16
12 Mechanical, Packaging, and Orderable
Information ........................................................... 16
4 Revision History
Changes from Revision B (July 2007) to Revision C
Page
• Changed format to meet latest data sheet standards; added new sections, and moved existing sections .......................... 1
• Added bullet item for DDC package to Features list ............................................................................................................. 1
• Revised Device Information table to include SOT-5 package ................................................................................................ 1
• Updated Typical Application Circuit to show SOT-5 (DDC) package pin configuration ......................................................... 1
• Added pin configuration drawings ......................................................................................................................................... 3
• Deleted Dissipation Ratings table; see Thermal Information ................................................................................................ 4
• Changed y-axis title in Figure 11 to Feedback Current from Supply Current ....................................................................... 6
• Reworded second paragraph in Current Limit subsection. .................................................................................................. 12
Changes from Revision A (June 2007) to Revision B
Page
• Added second paragraph in Current Limit subsection ........................................................................................................ 12
• Changed equation shown in Figure 27 ................................................................................................................................ 13
Changes from Original (September 2003) to Revision A
Page
• Changed document format to correspond to current product line standards ......................................................................... 1
• Removed Output Voltage vs Output Current graph (original Fig 2) ...................................................................................... 6
2 Submit Documentation Feedback
Copyright © 2003–2014, Texas Instruments Incorporated
Product Folder Links: TPS72301 TPS72325


Part Number TPS72301
Description 200mA Low-Noise High-PSRR Negative Output Low-Dropout Linear Regulators
Maker etcTI
Total Page 25 Pages
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