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LM3671TL-1.5/NOPB

Description
2MHz, 600mA Step-Down DC-DC Converter 5-DSBGA -40 to 85
CategoryPower/power management    The power supply circuit   
File Size7MB,38 Pages
ManufacturerCarling Technologies
Environmental Compliance
Download Datasheet Parametric View All

LM3671TL-1.5/NOPB Overview

2MHz, 600mA Step-Down DC-DC Converter 5-DSBGA -40 to 85

LM3671TL-1.5/NOPB Parametric

Parameter NameAttribute value
Brand NameTexas Instruments
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeBGA
package instructionVFBGA,
Contacts5
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Other featuresPULSE FREQUENCY MODULATION TECHNIQUE IS ALSO POSSIBLE
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage2.7 V
Nominal input voltage3.6 V
JESD-30 codeR-PBGA-B5
JESD-609 codee1
length1.387 mm
Humidity sensitivity level1
Number of functions1
Number of terminals5
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current1.15 A
Maximum output voltage3.3 V
Minimum output voltage1.1 V
Package body materialPLASTIC/EPOXY
encapsulated codeVFBGA
Package shapeRECTANGULAR
Package formGRID ARRAY, VERY THIN PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.675 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency2600 kHz
Temperature levelINDUSTRIAL
Terminal surfaceTin/Silver/Copper (Sn/Ag/Cu)
Terminal formBALL
Terminal pitch0.5 mm
Terminal locationBOTTOM
Maximum time at peak reflow temperatureNOT SPECIFIED
width1.057 mm
Base Number Matches1
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Reference
Design
LM3671, LM3671-Q1
SNVS294S – NOVEMBER 2004 – REVISED MAY 2016
LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter
1 Features
1
3 Description
The LM3671 step-down DC-DC converter is
optimized for powering low voltage circuits from a
single Li-Ion cell battery and input voltage rails from
2.7 V to 5.5 V. It provides up to 600-mA load current,
over the entire input voltage range. There are several
different fixed voltage output options available as well
as an adjustable output voltage version range from
1.1 V to 3.3 V.
The device offers superior features and performance
for mobile phones and similar portable systems.
Automatic intelligent switching between PWM low-
noise and PFM low-current mode offers improved
system control. During PWM mode, the device
operates at a fixed-frequency of 2 MHz (typical).
Hysteretic PFM mode extends the battery life by
reducing the quiescent current to 16 µA (typical)
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 (typical).
A high-switching frequency of 2 MHz (typical) allows
use of tiny surface-mount components. Only three
external surface-mount components, an inductor, and
two ceramic capacitors, are required.
Device Information
(1)
PART NUMBER
LM3671
LM3671
LM3671-Q1
PACKAGE
USON (6)
SOT-23 (5)
DSBGA (5)
BODY SIZE
2.00 mm × 2.00 mm (NOM)
2.90 mm × 1.60 mm (NOM)
1.413 mm × 1.083 mm (MAX)
LM3671-Q1 is Qualified for Automotive
Applications
AEC Q100-Qualified With the Following Results
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
16-µA Typical Quiescent Current
600-mA Maximum Load Capability
2-MHz PWM Fixed Switching Frequency (Typical)
Automatic PFM-PWM Mode Switching
Internal Synchronous Rectification for High
Efficiency
Internal Soft Start
0.01-µA Typical Shutdown Current
Operates from a Single Li-Ion Cell Battery
Only Three Tiny Surface-Mount External
Components Required (One Inductor, Two
Ceramic Capacitors)
Current Overload and Thermal Shutdown
Protection
Available in Fixed Output Voltages and Adjustable
Version
2 Applications
Mobile Phones
PDAs
MP3 Players
W-LAN
Portable Instruments
Digital Still Cameras
Portable Hard Disk Drives
Automotive
Portable Medical Equipment
Handheld Transaction Terminals
Wireless Home-Automation Equipment
Typical Application Circuit: Fixed-Voltage
V
IN
2.7V to 5.5V
C
IN
4.7
PF
V
IN
1
GND
2
5
L1: 2.2
PH
SW
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Circuit: ADJ
V
IN
2.7V to 5.5V
C
IN
4.7
PF
GND
V
IN
1
5
L1: 2.2
PH
SW
V
OUT
C
OUT
C1
R1
10
PF
V
OUT
C
OUT
10
PF
LM3671
LM3671-
ADJ
2
C2
R2
EN
FB
3
4
EN
FB
3
4
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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