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TPS54334 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS54334
Description  TPS54334 4.2-V to 28-V Input Voltage, 3-A Output Current Synchronous SWIFT??Step-Down Voltage Converter
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS54334 Datasheet(HTML) 1 Page - Texas Instruments

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VIN
PGOOD
SW
BOOT
VIN
VOUT
L1 6.8 H
µ
1
8
9
2
10
TPS54334DRC
VOUT= 3.3 V
C6
22 F
µ
C1
10µF
VIN=4.2 V to 24 V
U1
C2
0.1µF
C8
200 pF
R1
221 k
R2
84.5 k
R4
51.1
R5
31.6 k
R6
10 k
VDD
C7
22
F
µ
C5
150 pF
C4
0.015 F
µ
R3
2.05 k
R7 100 k
GND
COMP
6
7
C3
0.1 F
µ
VSENSE
EN
3,4,5
Product
Folder
Sample &
Buy
Technical
Documents
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Software
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Community
TPS54334
SLUSC26 – MAY 2015
TPS54334 4.2-V to 28-V Input Voltage, 3-A Output Current Synchronous SWIFT™
Step-Down Voltage Converter
1 Features
3 Description
The TPS54334 is a 28-V, 3-A, low quiescent supply
1
Two 128m
Ω/84mΩ MOSFETs for 3A Continuous
current (IQ), synchronous monolithic buck converter
Output Current
with integrated MOSFETs.
Power Good
The TPS54334 enables small designs by integrating
Low 2 µA Shutdown Quiescent Current
the
MOSFETs
and
implementing
current
mode
0.8 V Internal Voltage Reference with ±1.5%
control to reduce external component count.
Accuracy Over Temperature
Efficiency
is
maximized
through
the
integrated
Fixed-Frequency Current Mode Control
128m
Ω/84mΩ
MOSFETs,
low
quiescent
supply
Pulse Skipping Boosts Efficiency at Light Loads
current and pulse skipping at light loads. Using the
enable pin, shutdown supply current is reduced to
Overcurrent Protection for Both MOSFETs with
2 µA by entering a shutdown mode.
Hiccup Mode for Severe Fault Conditions
Thermal and Overvoltage Transient Protection
The TPS54334 provides accurate regulation for a
variety of loads with an accurate 1.5% voltage
Available in Easy-to-Use 8-Pin SOIC
reference over temperature.
PowerPAD™ and 10-Pin SON
Cycle by cycle current limiting on the high-side fet
Monotonic Start-Up into Pre-biased Outputs
protects the TPS54334 in overload situations and is
enhanced by a low-side sourcing current limit which
2 Applications
prevents current runaway. There is also a low-side
Consumer Applications such as a Digital TV
sinking current limit which turns off the low-side
(DTV), Set Top Box (STB, DVD/Blu-ray Player),
MOSFET to prevent excessive reverse current.
LCD Display, CPE (Cable Modem, WiFi Router),
Hiccup protection will be triggered if the overcurrent
condition has persisted for longer than the preset
DLP Projectors, Smart Meters
time. Thermal hiccup protection disables the part
Battery Chargers
when die temperature exceeds thermal shutdown
Industrial and Car Audio Power Supplies
temperature and enables the part again after the
5V,12 and 24V Distributed Power Bus Supply
built-in thermal hiccup time
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SO (8 Pin)
4.89 mm × 3.90 mm
TPS54334
VSON (10 Pin)
3.0 mm × 3.0 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
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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