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TPS40304 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS40304
Descripción Electrónicos  TPS4030x 3-V to 20-V Input Synchronous Buck Controller
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS40304 Datasheet(HTML) 1 Page - Texas Instruments

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BOOT
HDRV
SW
LDRV/OC
FB
COMP
PGOOD
EN/SS
TPS4030x
1
10
BP
VDD
PAD
V
IN
SD
V
OUT
V
IN
UDG-09158
V
OUT
GND
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TPS40303, TPS40304, TPS40305
SLUS964B – NOVEMBER 2009 – REVISED MAY 2015
TPS4030x 3-V to 20-V Input Synchronous Buck Controller
1 Features
3 Description
The
TPS4030x
is
a
family
of
cost-optimized
1
Input Voltage Range From 3 V to 20 V
synchronous buck controllers that operate from 3-V to
300-kHz (TPS40303), 600-kHz (TPS40304), and
20-V input. The controller implements a voltage-mode
1.2-MHz (TPS40305) Switching Frequencies
control architecture with input-voltage feed-forward
High- and Low-Side FET RDS(on) Current Sensing
compensation that responds instantly to a change in
input voltage. The switching frequency is fixed at 300
Programmable Thermally Compensated OCP
kHz, 600 kHz, or 1.2 MHz.
Levels
The Frequency Spread Spectrum (FSS) feature adds
Programmable Soft-Start
to the switching frequency, significantly reducing the
600-mV, 1% Reference Voltage
peak EMI noise and making it much easier to comply
Voltage Feed-Forward Compensation
with EMI standards.
Supports Prebiased Output
The TPS4030x offers design with a variety of user-
Frequency Spread Spectrum
programmable
functions,
including
soft-start,
Thermal Shutdown Protection at 145°C
overcurrent
protection
(OCP)
levels,
and
loop
compensation.
10-Pin 3-mm × 3-mm SON Package With Ground
Connection to Thermal Pad
OCP level may be programmed by a single external
resistor connected from the LDRV pin to circuit
ground. During initial power on, the TPS4030x enters
2 Applications
a calibration cycle, measures the voltage at the LDRV
POL Modules
pin, and sets an internal OCP voltage level. During
Printers
operation, the programmed OCP voltage level is
compared to the voltage drop across the low-side
Digital TVs
FET when it is on to determine whether there is an
Telecom
overcurrent condition. The TPS4030x then enters a
shutdown and restart cycle until the fault is removed.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS40303
TPS40304
VSON (10)
3.00 mm × 3.00 mm
TPS40305
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application Diagram
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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