EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC3125EDCB#TRPBF

Description
Conv DC-DC 1.8V to 5.5V Synchronous Step Up Single-Out 2V to 5.25V 1.2A 8-Pin DFN EP T/R
File Size311KB,18 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3125EDCB#TRPBF Overview

Conv DC-DC 1.8V to 5.5V Synchronous Step Up Single-Out 2V to 5.25V 1.2A 8-Pin DFN EP T/R

LTC3125EDCB#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSynchronous Step Up
Output TypeAdjustable
Switching Frequency (kHz)1900
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)2 to 5.25
Maximum Output Current (A)1.2
Minimum Input Voltage (V)1.8
Maximum Input Voltage (V)5.5
Typical Quiescent Current (uA)300
Efficiency (%)93
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count8
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width3
PCB changed8
Lead ShapeNo Lead
LTC3125
1.2A Synchronous Step-Up
DC/DC Converter with
Input Current Limit
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LTC
®
3125 is a high efficiency, synchronous step-up
DC/DC converter with an accurate programmable average
input current limit. The resistor programmable average
input current limit is 5% accurate at 500mA and is suitable
for a wide variety of applications. In mobile computing,
GSM and GPRS cards demand high current pulses well
beyond the capability of the PC Card and CompactFlash
slots. The LTC3125 in concert with a reservoir capacitor,
keeps the slot power safely within its capabilities providing
a high performance and simple solution.
Synchronous rectification produces high efficiency while
the 1.6MHz switching frequency minimizes the solution
footprint. The current mode PWM design is internally com-
pensated. Output disconnect allows the load to discharge in
shutdown, while also providing inrush current limiting.
Other features include a <1μA shutdown current, short-
circuit and thermal overload protection. The LTC3125 is
offered in a low profile 0.75mm
×
2mm
×
3mm package.
L,
LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Programmable Average Input Current Limit
5% Input Current Accuracy
200mA to 1000mA Program Range
V
IN
: 1.8V to 5.5V, V
OUT
: 2V to 5.25V
Supports High Current GSM/GPRS Load Burst
V
IN
> V
OUT
Operation
1.6MHz Fixed Frequency Operation
Internal Current Sense Resistor
1.2A Peak Current Limit
Up to 93% Efficiency
Output Disconnect in Shutdown
Soft-Start
Low Quiescent Current Burst Mode
®
Operation
Available in 2mm
×
3mm
×
0.75mm DFN Package
APPLICATIONS
n
n
n
n
GSM/GPRS PCMCIA/CompactFlash PC Card Modems
Wireless Emergency Locators
Portable Radios
Supercap Chargers
TYPICAL APPLICATION
PCMCIA/CompactFlash (3.3V/500mA Max),
4V GSM Pulsed Load
2.2μH
V
IN
3.3V
500mA
CS
V
IN
10μF
CER
OFF ON
SHDN
SW
V
OUT
LTC3125
1.24M
V
OUT
4V
2A PULSED LOAD
2200μF
2
TANT
3125 TA01a
Efficiency vs Load Current
100
90
80
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0.001
0.01
0.1
LOAD CURRENT (A)
V
OUT
= 4V
V
IN
= 3.3V
V
IN
= 2.4V
1
3125 TA01b
1
POWER LOSS (W)
0.1
PROG
44.2k
GND
FB
536k
0.01
0.001
3125fa
1

LTC3125EDCB#TRPBF Related Products

LTC3125EDCB#TRPBF LTC3125EDCB#PBF LTC3125EDCB#TRMPBF
Description Conv DC-DC 1.8V to 5.5V Synchronous Step Up Single-Out 2V to 5.25V 1.2A 8-Pin DFN EP T/R Conv DC-DC 1.8V to 5.5V Synchronous Step Up Single-Out 2V to 5.25V 1.2A 8-Pin DFN EP T/R Conv DC-DC 1.8V to 5.5V Synchronous Step Up Single-Out 2V to 5.25V 1.2A 8-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99
Part Status Active Unconfirmed Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01
Type Synchronous Step Up Synchronous Step Up Synchronous Step Up
Output Type Adjustable Adjustable Adjustable
Switching Frequency (kHz) 1900 1900 1900
Switching Regulator Yes Yes Yes
Number of Outputs 1 1 1
Output Voltage (V) 2 to 5.25 2 to 5.25 2 to 5.25
Maximum Output Current (A) 1.2 1.2 1.2
Minimum Input Voltage (V) 1.8 1.8 1.8
Maximum Input Voltage (V) 5.5 5.5 5.5
Typical Quiescent Current (uA) 300 300 300
Efficiency (%) 93 93 93
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125
Supplier Temperature Grade Extended Extended Extended
Packaging Tape and Reel Tape and Reel Tape and Reel
Pin Count 8 8 8
Standard Package Name DFN DFN DFN
Supplier Package DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 2 2 2
Package Width 3 3 3
PCB changed 8 8 8
Lead Shape No Lead No Lead No Lead
Which great god has the STM32 Rubik's Cube restoration program
Which great god has the STM32 Rubik's Cube restoration program? I need it urgently...
一瓶矿泉水 stm32/stm8
An error occurred during compilation. I don't know why. Please help.
Linking with DDK linker... Sample1Device.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall KDriverManagedQueueEx::Cancel(class KIrp)" (?Cancel@KDriverManagedQueueEx@@UAE...
ywlgjy Embedded System
Who has made security electronic products? Please send me an email.
zhuzhou601@126.com30303560 JTY-HF-GST102 Linear Beam Smoke Detector Installation and Operation Manual F3.780.194AS V4.01 This direction...
硬制合金 MCU
Recruiting part-time personnel for driver development
Our company is now recruiting authors of books on driver development. The salary is generous. If you are interested, you can contact me for details. QQ878298915. Please indicate the driver. Email pyq_...
cashkan Embedded System
AD conversion problem
Moderator, I have a question!I use the internal AD of 149, and the collected data is unstable. It is the same when the input is directly pulled down. The jump is about 15, and occasionally it will rea...
iwtxk_tq Microcontroller MCU
proteus Download Vista System
Proteus Vista Download...
zzqbruce Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1954  285  715  568  1468  40  6  15  12  30 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号