Linear Regulator. TPS79933-Q1 Datasheet

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TPS79933-Q1 Datasheet
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Part TPS79933-Q1
Description Linear Regulator
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TPS799-Q1
SBVS097F – MARCH 2008 – REVISED JUNE 2015
TPS799-Q1 200 mA, Low Quiescent Current, Ultralow Noise,
High PSRR, Low Dropout, Linear Regulators
1 Features
1 Qualified for Automotive Applications
• 200-mA Low-Dropout (LDO) Regulator
With Enable (EN)
• Low IQ: 40 μA
• Multiple Output Voltage Versions Available:
– Fixed Outputs of 1.2 V to 4.5 V
– Adjustable Outputs from 1.2 V to 6.5 V
• High PSRR: 66 dB at 1 kHz, 51 db at 10 kHz
• Ultralow Noise: 29.5 μVRMS
• Fast Start-Up Time: 45 μs
• Stable With a Low ESR, 2-μF (Typical) Output
Capacitance
• Excellent Load and Line Transient Response
• 2% Overall Accuracy (Load, Line, and
Temperature)
• Very Low Dropout: 100 mV
• Thin SOT-23 and 2-mm × 2-mm SON-6 Packages
2 Applications
• Infotainment
• Cluster
• Advanced Driver Assistance Systems
SPACE
Typical Application Circuit
Fixed Voltage Versions
Optional input capacitor.
May improve source
impedance, noise, or PSRR.
VIN
IN
OUT
VOUT
TPS799xx-Q1
EN GND NR
2.2mF
Ceramic
VEN
Optional bypass capacitor
to reduce output noise
and increase PSRR.
3 Description
The TPS799xx-Q1 family of low-dropout (LDO) low-
power linear regulators offers excellent AC
performance with very low ground current. High
power-supply rejection ratio (PSRR), low noise, fast
start-up, and excellent line and load transient
response are provided while consuming a very low
40-μA (typical) ground current. The TPS799xx-Q1 is
stable with ceramic capacitors and uses an advanced
BiCMOS fabrication process to yield a dropout
voltage of 100 mV (typical) at 200-mA output. The
TPS799xx-Q1 uses a precision voltage reference and
feedback loop to achieve overall accuracy of 2% over
all load, line, process, and temperature variations. It
is fully specified from TJ = –40°C to 125°C and is
offered in low profile thin SOT-23 and 2-mm × 2-mm
SON packages, ideal for wireless handsets and
WLAN cards.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS799-Q1
SON (6)
SOT (5)
2.00 mm × 2.00 mm
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
Adjustable Voltage Version
Optional input capacitor.
May improve source
impedance, noise, or PSRR.
VOUT =
(R1 + R2) ´
R2
1.193
VIN
IN
OUT
VOUT
TPS79901-Q1
EN GND FB
R1
CFB
2.2mF
Ceramic
R2
VEN
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.



etcTI TPS79933-Q1
TPS799-Q1
SBVS097F – MARCH 2008 – REVISED JUNE 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 .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagrams ....................................... 8
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application .................................................. 11
9 Power Supply Recommendations...................... 13
10 Layout................................................................... 13
10.1 Layout Guidelines ................................................. 13
10.2 Layout Example .................................................... 14
10.3 Thermal Consideration.......................................... 14
10.4 Power Dissipation ................................................. 14
10.5 Package Mounting ................................................ 14
11 Device and Documentation Support ................. 15
11.1 Documentation Support ........................................ 15
11.2 Related Links ........................................................ 15
11.3 Trademarks ........................................................... 15
11.4 Electrostatic Discharge Caution ............................ 15
11.5 Glossary ................................................................ 15
12 Mechanical, Packaging, and Orderable
Information ........................................................... 15
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (January 2012) to Revision F
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
• Added High PSRR: 51 db at 10 kHz ..................................................................................................................................... 1
Changes from Revision D (June 2011) to Revision E
Page
• Changed CDM ESD rating from 500 V to 1000 V. ................................................................................................................ 4
2
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5 Pin Configuration and Functions
DDC Package
5-Pin SOT-23
Top View
IN
1
GND
2
EN
3
5 OUT
4 NR
TPS799-Q1
SBVS097F – MARCH 2008 – REVISED JUNE 2015
NAME
IN
GND
EN
NR
FB
OUT
N/C
Pin Functions
PIN
NO. (SOT) NO. (SON)
DESCRIPTION
1
6
Input supply
2
3, Pad Ground. The pad must be tied to GND.
3
4
Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into
shutdown mode. EN can be connected to IN if not used.
4
2
Fixed-voltage versions only; connecting an external capacitor to this pin bypasses noise generated by
the internal bandgap. This capacitor allows output noise to be reduced to very low levels.
4
2
Adjustable version only; this pin is the input to the control loop error amplifier, and is used to set the
output voltage of the device.
5
1
Output of the regulator. A small capacitor (total typical capacitance 2 μF ceramic) is needed from
this pin to ground to ensure stability.
5
Not internally connected. This pin must either be left open or tied to GND.
Copyright © 2008–2015, Texas Instruments Incorporated
Product Folder Links: TPS799-Q1
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