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LTC3127EMSE#TRPBF

Description
Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 12-Pin MSOP EP T/R
CategoryPower/power management    The power supply circuit   
File Size319KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC3127EMSE#TRPBF Overview

Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 12-Pin MSOP EP T/R

LTC3127EMSE#TRPBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionHTSSOP,
Contacts12
Manufacturer packaging code05-08-1666
Reach Compliance Codecompliant
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 1.8 TO 5.25V
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage1.8 V
Nominal input voltage3.6 V
JESD-30 codeR-PDSO-G12
JESD-609 codee3
length4.039 mm
Humidity sensitivity level1
Number of functions1
Number of terminals12
Maximum operating temperature85 °C
Minimum operating temperature
Nominal output voltage3.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeHTSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.1 mm
surface mountYES
Switch configurationBUCK-BOOST
Maximum switching frequency1700 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
Base Number Matches1
FEATURES
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LTC3127
1A Buck-Boost DC/DC
Converter with Programmable
Input Current Limit
DESCRIPTION
The
LTC
®
3127
is a wide V
IN
range, highly efficient, 1.35MHz
fixed frequency buck-boost DC/DC converter that operates
from input voltages above, below or equal to the output
voltage. The LTC3127 features programmable average
input current limit, making it ideal for power-limited input
sources. The input current limit is programmed with a
single resistor and is accurate from 0.2A to 1A of average
input current.
The topology incorporated provides a continuous
transfer function through all operating modes. Other
features include <1μA shutdown current, pin-selectable
Burst Mode operation and thermal overload protection.
The LTC3127 is housed in thermally enhanced 10-lead
(3mm
×
3mm
×
0.75mm) DFN packages and 12-lead
MSOP packages.
L,
LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
n
n
n
n
n
n
n
n
n
Programmable (0.2A to 1A) ±4% Accurate Average
Input Current Limit
Regulated Output with Input Voltages Above,
Below or Equal to the Output
1.8V to 5.5V (Input) and 1.8V to 5.25V (Output)
Voltage Range
0.6A Continuous Output Current: V
IN
> 1.8V
1A Continuous Output Current: V
IN
> 3V
Single Inductor
Synchronous Rectification: Up to 96% Efficiency
Burst Mode
®
Operation: I
Q
= 35μA (Pin Selectable)
Output Disconnect in Shutdown
<1μA Shutdown Current
Small, Thermally Enhanced 10-Lead (3mm
×
3mm
×
0.75mm) DFN and 12-Lead MSOP Packages
APPLICATIONS
n
n
n
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USB Powered GSM Modems
Supercap Charger
Handheld Test Instruments
PC Card Modems
Wireless Terminals
TYPICAL APPLICATION
USB or Li-Ion (500mA Maximum Input Current) to 3.3V
L1
4.7µH
SW1
V
IN
MODE
SHDN
FB
V
C
PROG
SGND PGND
32.4k
100pF
499k
3127 TA01
Efficiency vs V
IN
100
300mA LOAD
320k
EFFICIENCY (%)
USB OR Li-Ion
2.9V to 5.5V
SW2
V
OUT
V
OUT
3.3V
90
80
OFF ON
10µF
2.2mF
182k
70
60
50
V
OUT
= 3.3V
L = 4.7µH
F = 1.35MHz
3
3.5
4.5
4
V
IN
(V)
5
5.5
3127 TA01a
L1: COILCRAFT XPL4020-472ML
3127fa
For more information
www.linear.com/LTC3127
1

LTC3127EMSE#TRPBF Related Products

LTC3127EMSE#TRPBF LTC3127EDD#PBF LTC3127EDD#TRPBF LTC3127EMSE#PBF
Description Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 12-Pin MSOP EP T/R Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 10-Pin DFN EP Tube Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 10-Pin DFN EP T/R Conv DC-DC 1.8V to 5.5V Non-Inv/Inv/Step Up/Step Down Single-Out 1.8V to 5.25V 1A 12-Pin MSOP EP Tube
EU restricts the use of certain hazardous substances - Compliant Compliant Compliant
ECCN (US) - EAR99 EAR99 EAR99
Part Status - Active Active Active
HTS - 8542.39.00.01 8542.39.00.01 8542.39.00.01
Type - Step Up|Inverting|Non-Inverting|Step Down Step Up|Step Down|Non-Inverting|Inverting Step Down|Non-Inverting|Inverting|Step Up
Output Type - Adjustable Adjustable Adjustable
Switching Frequency (kHz) - 1700 1700 1700
Switching Regulator - Yes Yes Yes
Number of Outputs - 1 1 1
Output Voltage (V) - 1.8 to 5.25 1.8 to 5.25 1.8 to 5.25
Maximum Output Current (A) - 1 1 1
Minimum Input Voltage (V) - 1.8 1.8 1.8
Maximum Input Voltage (V) - 5.5 5.5 5.5
Operating Supply Voltage (V) - 1.8 to 5.5 1.8 to 5.5 1.8 to 5.5
Typical Switch Current (A) - 2.5 2.5 2.5
Typical Quiescent Current (uA) - 400 400 400
Efficiency (%) - 96 96 96
Minimum Operating Temperature (°C) - -40 -40 -40
Maximum Operating Temperature (°C) - 85 85 85
Supplier Temperature Grade - Extended Extended Extended
Packaging - Tube Tape and Reel Tube
Pin Count - 10 10 12
Standard Package Name - DFN DFN SOP
Supplier Package - DFN EP DFN EP MSOP EP
Mounting - Surface Mount Surface Mount Surface Mount
Package Height - 0.75(Max) 0.75(Max) 0.86
Package Length - 3 3 4.04
Package Width - 3 3 3
PCB changed - 10 10 12
Lead Shape - No Lead No Lead Gull-wing
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