EEWORLDEEWORLDEEWORLD

Part Number

Search

1503I2

Description
FIXED POSITIVE REGULATOR, PSFM5
Categorysemiconductor    Power management   
File Size191KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

1503I2 Overview

FIXED POSITIVE REGULATOR, PSFM5

1503I2 Parametric

Parameter NameAttribute value
Number of terminals5
stateCONSULT MFR
packaging shapeRECTANGULAR
Package SizeFLANGE MOUNT
Terminal formTHROUGH-HOLE
Terminal locationSINGLE
Packaging MaterialsPLASTIC/EPOXY
Adjustment typeFIXED POSITIVE REGULATOR
LTC1503-1.8/LTC1503-2
High Efficiency Inductorless
Step-Down DC/DC Converters
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Input Voltage Range: 2.4V to 6V
Fixed Output Voltages: 1.8V
±4%,
2V
±4%
Output Current: Up to 100mA
No Inductors
Typical Efficiency 25% Higher than LDOs
Low Operating Current: 25
µ
A
Low Shutdown Current: 5
µ
A
600kHz Switching Frequency
Shutdown Disconnects Load from V
IN
Soft-Start Limits Inrush Current at Turn-On
Short-Circuit and Overtemperature Protected
Available in 8-Pin MSOP and SO Packages
The LTC
®
1503-1.8/LTC1503-2 are switched capacitor
step-down DC/DC converters that produce a regulated
output from a 2.4V to 6V input. The parts use switched
capacitor fractional conversion to achieve high efficiency
over the entire input range. No inductors are required.
Internal circuitry controls the step-down conversion ratio
to optimize efficiency as the input voltage and load condi-
tions vary. Typical efficiency is 25% higher than that of a
low dropout (LDO) linear regulator.
Regulation is achieved by sensing the output voltage and
enabling the internal switching network as needed to
maintain a fixed output voltage. This method of regulation
enables the parts to achieve high efficiency at extremely
light loads. Low operating current (25µA with no load, 5µA
in shutdown) and low external parts count (two 1µF flying
capacitors and two 10µF bypass capacitors) make the
LTC1503-1.8/LTC1503-2 ideally suited for space con-
strained battery-powered applications. The parts are fully
short-circuit and overtemperature protected.
The LTC1503-1.8/LTC1503-2 are available in 8-pin MSOP
and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
Cellular Phones
Handheld Computers
Smart Card Readers
Low Power DSP Supplies
Portable Electronic Equipment
Handheld Medical Instruments
TYPICAL APPLICATIO
Single Li-Ion to 2V DC/DC Converter
80
4
1-CELL Li-Ion OR
3-CELL NiMH
10µF
1µF
2
3
5
V
IN
C1
C1
+
V
OUT
C2
C2
+
1
8
6
7
1µF
10µF
V
OUT
= 2V
I
OUT
= 100mA
EFFICIENCY (%)
LTC1503-2
SHDN/SS GND
1503-1.8/2 TA01
U
Efficiency vs Input Voltage
100
I
OUT
= 100mA
I
OUT
= 1mA
60
“IDEAL” LDO
40
LTC1503-2
V
OUT
= 2V
20
2
3
4
INPUT VOLTAGE (V)
1503-1.8/2 TA02
U
U
5
6
1

1503I2 Related Products

1503I2 LTC1503CMS8-1.8 LTC1503-1.8 LTC1503CMS8-2 LTFX 503I18 15032 150318
Description FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5 FIXED POSITIVE REGULATOR, PSFM5
Number of terminals 5 8 5 8 5 5 5 5
Terminal form THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal location SINGLE DUAL SINGLE DUAL SINGLE SINGLE SINGLE SINGLE
state CONSULT MFR - CONSULT MFR - CONSULT MFR CONSULT MFR CONSULT MFR CONSULT MFR
packaging shape RECTANGULAR - RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package Size FLANGE MOUNT - FLANGE MOUNT - FLANGE MOUNT FLANGE MOUNT FLANGE MOUNT FLANGE MOUNT
Packaging Materials PLASTIC/EPOXY - PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Adjustment type FIXED POSITIVE REGULATOR - FIXED POSITIVE REGULATOR - FIXED POSITIVE REGULATOR FIXED POSITIVE REGULATOR FIXED POSITIVE REGULATOR FIXED POSITIVE REGULATOR
I would like to ask, has it ever happened to you when WinCE starts up? How can I avoid it?
When WinCE starts, it starts with the startup LOGO, then the startup screen, and then a colorful block flashes before the WinCE desktop appears. Is this caused by some code? I'm very annoyed by this a...
17584681 Embedded System
PWM Basic Principle
PWM (Pulse Width Modulation) control - Pulse width modulation technology, by modulating the width of a series of pulses, to equivalently obtain the required waveform (including shape and amplitude). P...
totopper Industrial Control Electronics
Understand relay contact protection and contact matters
I saw a picture on the Internet that describes the process analysis of the contact connection time. It is very good, so I will put it here first.We know that the contact protection of relays is actual...
qwqwqw2088 Analogue and Mixed Signal
Bluetooth Headset Design Considerations
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 19:50[/i] [i]I found a good resource and would like to share it with you[/i]...
牛默默 Mobile and portable
China Telecom and Netcom obtain 3G number segments; four major operators share 3G cake
After China Mobile and China Unicom used the 159 and 153 number segments respectively, the other two fixed network operators (operating fixed networks such as fixed lines and broadband), China Telecom...
JasonYoo RF/Wirelessly
CC1310 LaunchPad Copy Board Sharing
No more nonsense, just send the torrent directly.[float=right]Uploaded on 2018-2-11 14:30[/float] Click the file name to download the attachment. Reading permission: 20The TI official CC1310 LanchPad ...
通宵敲代码 Wireless Connectivity

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1986  805  1020  1912  973  40  17  21  39  20 
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