Texas Instruments LM3671 Evaluation Board LM3671LC-1.8EV/NOPB LM3671LC-1.8EV/NOPB Scheda Tecnica
Codici prodotto
LM3671LC-1.8EV/NOPB
1
2
5
4
3
V
IN
SW
FB
EN
GND
L1: 2.2
P
H
V
OUT
C
OUT
10
P
F
C
IN
4.7
P
F
LM3671
V
IN
2.7V to 5.5V
SNVS294Q – NOVEMBER 2004 – REVISED NOVEMBER 2013
LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter
Check for Samples:
1
FEATURES
APPLICATIONS
2
•
16 µA Typical Quiescent Current
•
Mobile Phones
•
600 mA Maximum Load Capability
•
PDAs
•
2 MHz PWM Fixed Switching Frequency (typ.)
•
MP3 Players
•
Automatic PFM/PWM Mode Switching
•
W-LAN
•
Internal Synchronous Rectification for High
•
Portable Instruments
Efficiency
•
Digital Still Cameras
•
Internal Soft Start
•
Portable Hard Disk Drives
•
0.01 µA Typical Shutdown Current
•
Automotive
•
Operates from a Single Li-Ion Cell Battery
DESCRIPTION
•
Only Three Tiny Surface-Mount External
The
LM3671
step-down
DC-DC
converter
is
Components Required (One Inductor, Two
optimized for powering low voltage circuits from a
Ceramic Capacitors)
single Li-Ion cell battery and input voltage rails from
•
Current Overload and Thermal Shutdown
2.7V to 5.5V. It provides up to 600 mA load current,
Protection
over the entire input voltage range. There are several
•
Available in Fixed Output Voltages and
different fixed voltage output options available as well
Adjustable Version
as an adjustable output voltage version range from
1.1V to 3.3V.
1.1V to 3.3V.
•
LM3671Q is an Automotive Grade Product that
is AEC-Q100 Grade 1 Qualified
is AEC-Q100 Grade 1 Qualified
The device offers superior features and performance
for mobile phones and similar portable systems.
for mobile phones and similar portable systems.
•
SOT-23, 5-Bump DSBGA and 6-Pin USON
Automatic intelligent switching between PWM low-
Packages
noise and PFM low-current mode offers improved
system control. During PWM mode, the device
operates at a fixed-frequency of 2 MHz (typ.).
Hysteretic PFM mode extends the battery life by
reducing the quiescent current to 16 µA (typ.) during
light
system control. During PWM mode, the device
operates at a fixed-frequency of 2 MHz (typ.).
Hysteretic PFM mode extends the battery life by
reducing the quiescent current to 16 µA (typ.) during
light
load
and
standby
operation.
Internal
synchronous rectification provides high efficiency
during PWM mode operation. In shutdown mode, the
device turns off and reduces battery consumption to
0.01 µA (typ.).
during PWM mode operation. In shutdown mode, the
device turns off and reduces battery consumption to
0.01 µA (typ.).
TYPICAL APPLICATION CIRCUITS
Figure 1. Typical Application Circuit
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
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PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.