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LTC3127EDD#TRPBF

Description
IC DCDC CONV BUCK BOOST 10DFN
Categorysemiconductor    Power management   
File Size340KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC3127EDD#TRPBF Overview

IC DCDC CONV BUCK BOOST 10DFN

LTC3127EDD#TRPBF Parametric

Parameter NameAttribute value
applicationenergy harvesting
Current - Power400µA
Voltage - Power1.8 V ~ 5.5 V
Operating temperature-40°C ~ 85°C
Installation typesurface mount
Package/casing10-WFDFN exposed pad
Supplier device packaging10-DFN(3x3)
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.
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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
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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

LTC3127EDD#TRPBF Related Products

LTC3127EDD#TRPBF LTC3127EMSE#PBF LTC3127EMSE#TRPBF
Description IC DCDC CONV BUCK BOOST 10DFN IC BUCK BOOST SYNC ADJ 12MSOP IC DCDC CONV BUCK BOOST 12MSOP
Brand Name - Linear Technology Linear Technology
Is it Rohs certified? - conform to conform to
Maker - Linear ( ADI ) Linear ( ADI )
Parts packaging code - MSOP MSOP
package instruction - HTSSOP, TSSOP12,.19 HTSSOP, TSSOP12,.19
Contacts - 12 12
Manufacturer packaging code - MSE MSE
Reach Compliance Code - compliant compliant
ECCN code - EAR99 EAR99
Other features - ALSO OPERATES IN ADJUSTABLE MODE FROM 1.8 TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.8 TO 5.25V
Analog Integrated Circuits - Other Types - SWITCHING REGULATOR SWITCHING REGULATOR
control mode - CURRENT-MODE CURRENT-MODE
Control Technology - PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage - 5.5 V 5.5 V
Minimum input voltage - 1.8 V 1.8 V
Nominal input voltage - 3.6 V 3.6 V
JESD-30 code - R-PDSO-G12 R-PDSO-G12
JESD-609 code - e3 e3
length - 4.039 mm 4.039 mm
Humidity sensitivity level - 1 1
Number of functions - 1 1
Number of terminals - 12 12
Maximum operating temperature - 85 °C 85 °C
Nominal output voltage - 3.3 V 3.3 V
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - HTSSOP HTSSOP
Encapsulate equivalent code - TSSOP12,.19 TSSOP12,.19
Package shape - RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - 260 260
Certification status - Not Qualified Not Qualified
Maximum seat height - 1.1 mm 1.1 mm
surface mount - YES YES
Switch configuration - BUCK-BOOST BUCK-BOOST
Maximum switching frequency - 1700 kHz 1700 kHz
technology - CMOS CMOS
Temperature level - OTHER OTHER
Terminal surface - Matte Tin (Sn) Matte Tin (Sn)
Terminal form - GULL WING GULL WING
Terminal pitch - 0.65 mm 0.65 mm
Terminal location - DUAL DUAL
Maximum time at peak reflow temperature - NOT SPECIFIED NOT SPECIFIED
width - 3 mm 3 mm
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