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LM3671 Folha de dados(PDF) 1 Page - Texas Instruments

Nome de Peças LM3671
Descrição Electrónicos  LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter6
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

LM3671 Folha de dados(HTML) 1 Page - Texas Instruments

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1
2
5
4
3
VIN
SW
FB
EN
GND
L1: 2.2 2H
VOUT
COUT
10 2F
CIN
4.7 2F
LM3671
VIN
2.7V to 5.5V
1
2
5
4
3
VIN
SW
FB
EN
GND
L1: 2.2 2H
VOUT
COUT
10 2F
CIN
4.7 2F
LM3671-
ADJ
VIN
2.7V to 5.5V
R1
R2
C1
C2
Product
Folder
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Buy
Technical
Documents
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LM3671, LM3671-Q1
SNVS294R – NOVEMBER 2004 – REVISED NOVEMBER 2014
LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter
1 Features
3 Description
The
LM3671
step-down
DC-DC
converter
is
1
16-µA Typical Quiescent Current
optimized for powering low voltage circuits from a
600-mA Maximum Load Capability
single Li-Ion cell battery and input voltage rails from
2-MHz PWM Fixed Switching Frequency (Typ.)
2.7 V to 5.5 V. It provides up to 600-mA load current,
over the entire input voltage range. There are several
Automatic PFM/PWM Mode Switching
different fixed voltage output options available as well
Internal Synchronous Rectification for High
as an adjustable output voltage version range from
Efficiency
1.1 V to 3.3 V.
Internal Soft Start
The device offers superior features and performance
0.01-µA Typical Shutdown Current
for mobile phones and similar portable systems.
Operates from a Single Li-Ion Cell Battery
Automatic intelligent switching between PWM low-
noise and PFM low-current mode offers improved
Only Three Tiny Surface-Mount External
system control. During PWM mode, the device
Components Required (One Inductor, Two
operates at a fixed-frequency of 2 MHz (typ.).
Ceramic Capacitors)
Hysteretic PFM mode extends the battery life by
Current Overload and Thermal Shutdown
reducing the quiescent current to 16 µA (typ.) during
Protection
light
load
and
standby
operation.
Internal
synchronous rectification provides high efficiency
Available in Fixed Output Voltages and Adjustable
during PWM mode operation. In shutdown mode, the
Version
device turns off and reduces battery consumption to
LM3671-Q1 is an AEC-Q100 Grade 1 Qualified
0.01 µA (typ.).
Automotive Grade Product
A high-switching frequency of 2 MHz (typ.) allows use
of
tiny
surface-mount
components.
Only
three
2 Applications
external surface-mount components, an inductor, and
Mobile Phones
two ceramic capacitors, are required.
PDAs
Device Information(1)
MP3 Players
PART NUMBER PACKAGE
BODY SIZE
W-LAN
LM3671
USON (6)
2.00 mm x 2.00 mm (NOM)
Portable Instruments
SOT-23 (5)
2.90 mm x 1.60 mm (NOM)
LM3671
Digital Still Cameras
LM3671-Q1
DSBGA (5)
1.413 mm x 1.083 mm (MAX)
Portable Hard Disk Drives
(1) For all available packages, see the orderable addendum at
Automotive
the end of the datasheet.
Typical Application Circuit: Fixed-Voltage
Typical Application Circuit: ADJ
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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