TPS786 Regulators Datasheet

TPS786 Datasheet, PDF, Equivalent


Part Number

TPS786

Description

Low-Dropout Linear Regulators

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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TPS786
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TPS786
SLVS389M – SEPTEMBER 2002 – REVISED SEPTEMBER 2015
TPS786 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A
Low-Dropout Linear Regulators
1 Features
1 1.5-A Low-Dropout Regulator With Enable
• Available in Fixed and Adjustable (1.2 V to 5.5 V)
Output Versions
• High PSRR (49 dB at 10 kHz)
• Ultralow Noise (48 μVRMS, TPS78630)
• Fast Start-Up Time (50 μs)
• Stable With a 1-μF Ceramic Capacitor
• Excellent Load and Line Transient Response
• Very Low Dropout Voltage (390 mV at Full Load,
TPS78630)
• 3 × 3 SON PowerPAD™, 6-Pin SOT223 and 5-Pin
DDPAK Package
2 Applications
• RF: VCOs, Receivers, ADCs
• Audio
• Bluetooth®, Wireless LAN
• Cellular and Cordless Telephones
• Handheld Organizers, PDAs
Ripple Rejection vs Frequency
80
70
IOUT = 1 mA
60
VIN = 4 V
COUT = 10 µF
CNR = 0.01 µF
50
IOUT = 1.5 A
40
30
20
10
0
1 10 100 1k 10k 100k 1M 10M
f (Hz)
3 Description
The TPS786 family of low-dropout (LDO) low-power
linear voltage regulators features high power-supply
rejection ratio (PSRR), ultralow noise, fast start-up,
and excellent line and load transient responses in
small outline, SOT223-6 and DDPAK-5 packages.
Each device in the family is stable, with a small 1-μF
ceramic capacitor on the output. The family uses an
advanced, proprietary BiCMOS fabrication process to
yield extremely low dropout voltages (for example,
390 mV at 1.5 A). Each device achieves fast start-up
times (approximately 50 μs with a 0.001-μF bypass
capacitor) while consuming very low quiescent
current (265 μA, typical). Moreover, when the device
is placed in standby mode, the supply current is
reduced to less than 1 μA. The TPS78630 exhibits
approximately 48 μVRMS of output voltage at 3-V
output noise with a 0.1-μF bypass capacitor.
Applications with analog components that are noise
sensitive, such as portable RF electronics, benefit
from the high PSRR, low noise features, and the fast
response time.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TO-263 (5)
10.16 mm × 8.42 mm
TPS786
SOT-223 (6) 6.50 mm × 3.50 mm
SON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Output Spectral Noise Density vs
Frequency
0.80
0.70
0.60
VIN = 5.5 V
COUT = 2.2 µF
CNR = 0.1 µF
0.50
0.40
0.30
IOUT = 1 mA
0.20
0.10
IOUT = 1.5 A
0.00
100
1k 10k
Frequency (Hz)
100k
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.

TPS786
TPS786
SLVS389M – SEPTEMBER 2002 – REVISED SEPTEMBER 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......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
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 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 .................................................. 14
9 Power Supply Recommendations...................... 16
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Examples................................................... 16
10.3 Regulator Mounting............................................... 17
10.4 Power Dissipation ................................................. 17
11 Device and Documentation Support ................. 21
11.1 Device Support...................................................... 21
11.2 Documentation Support ........................................ 21
11.3 Community Resources.......................................... 21
11.4 Trademarks ........................................................... 21
11.5 Electrostatic Discharge Caution ............................ 21
11.6 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision L (October 2010) to Revision M
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
• Updated Thermal Information................................................................................................................................................. 5
Changes from Revision K (August, 2010) to Revision L
Page
• Corrected typo in Figure 34 .................................................................................................................................................. 20
Changes from Revision J (May, 2009) to Revision K
Page
• Replaced the Dissipation Ratings table with the Thermal Information Table......................................................................... 5
• Revised section .................................................................................................................................................................... 17
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Product Folder Links: TPS786
Copyright © 2002–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS786 SLVS389M – SEPTEMBE R 2002 – REVISED SEPTEMBER 2015 TPS78 6 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators Ri pple Rejection − (dB) Output Spectral Noise Density (µVÖHz) 1 Features 1 1.5-A Low-Dropout Regulator With Ena ble • Available in Fixed and Adjustab le (1.2 V to 5.5 V) Output Versions • High PSRR (49 dB at 10 kHz) • Ultral ow Noise (48 μVRMS, TPS78630) • Fast Start-Up Time (50 μs) • Stable With a 1-μF Ceramic Capacitor • Excellen t Load and Line Transient Response • Very Low Dropout Voltage (390 mV at Ful l Load, TPS78630) • 3 × 3 SON PowerP AD™, 6-Pin SOT223 and 5-Pin DDPAK Pac kage 2 Applications • RF: VCOs, Recei vers, ADCs • Audio • Bluetooth®, W ireless LAN • Cellular and Cordless T elephones • Handheld Organizers, PDAs Ripple Rejection vs Frequency 80 70 IOUT = 1 mA 60 VIN = 4 V COUT = 10 µF CNR = 0.01 µF 50 IOUT = 1.5 A 40 30 20 10 0 1 10 100 1k 10k 10.
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