參數(shù)資料
型號： LTC3127EMSE#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, PDSO12
封裝： LEAD FREE, PLASTIC, MSOP-12
文件頁數(shù)： 1/20頁
文件大小： 366K
代理商： LTC3127EMSE#PBF
LTC3127
3127f
Typical applicaTion
DescripTion
1A Buck-Boost DC/DC
Converter with Programmable
Input Current Limit
TheLTC3127isawideVINrange,highlyefficient,1.35MHz
fixedfrequencybuck-boostDC/DCconverterthatoperates
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.
Efficiency vs VIN
FeaTures
applicaTions
n
Programmable (0.2A to 1A) ±4% Accurate Average
Input Current Limit
n
Regulated Output with Input Voltages Above,
Below or Equal to the Output
n
1.8V to 5.5V (Input) and 1.8V to 5.25V (Output)
Voltage Range
n
0.6A Continuous Output Current: VIN > 1.8V
n
1A Continuous Output Current: VIN > 3V
n
Single Inductor
n
Synchronous Rectification: Up to 96% Efficiency
n
Burst Mode Operation: IQ = 35μA (Pin Selectable)
n
Output Disconnect in Shutdown
n
<1μA Shutdown Current
n
Small, Thermally Enhanced 10-Lead (3mm
× 3mm ×
0.75mm) DFN and 12-Lead MSOP Packages
n
USB Powered GSM Modems
n
Supercap Charger
n
Handheld Test Instruments
n
PC Card Modems
n
Wireless Terminals
ON
OFF
USB OR Li-Ion
2.9V to 5.5V
10F
L1: COILCRAFT XPL4020-472ML
32.4k
L1
4.7H
182k
320k
2.2mF
VOUT
3.3V
499k
SW1
MODE
VIN
SHDN
PROG
SGND PGND
FB
SW2
VOUT
VC
3127 TA01
100pF
VIN(V)
2.5
EFFICIENCY
(%)
100
90
70
60
80
50
4
3127 TA01a
5
5.5
4.5
3.5
3
300mA LOAD
VOUT = 3.3V
L = 4.7H
F = 1.35MHz
1A LOAD
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.
USB or Li-Ion (500mA Maximum Input Current) to 3.3V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3127EMSETRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A Buck-Boost DC/DC Converter with Programmable Input Current Limit
LTC3129 制造商:LINER 制造商全稱:Linear Technology 功能描述:15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3??A Quiescent Current
LTC3129-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3??A Quiescent Current
LTC3129EMSE#PBF 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down/Step Up 1.92V to 15V 16-Pin MSOP EP 制造商:Linear Technology 功能描述:IC REG BUCK BST ADJ 0.2A 16MSOP 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, ADJ, 1.2MHZ, MSOP-16; Primary Input Voltage:15V; No. of Outputs:1; Output Current:200mA; No. of Pins:16; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:16-MSOP ;RoHS Compliant: Yes
LTC3129EMSE#TRPBF 制造商:Linear Technology 功能描述:IC REG BUCK BST ADJ 0.2A 16MSOP 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, ADJ, 1.2MHZ, MSOP-16; Primary Input Voltage:15V; No. of Outputs:1; Output Current:200mA; No. of Pins:16; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:16-MSOP ;RoHS Compliant: Yes
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