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LTC1514IS8-5#TRPBF

Description
IC REG SWTCHD CAP 5V 50MA 8SOIC
CategoryPower/power management    The power supply circuit   
File Size208KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC1514IS8-5#TRPBF Overview

IC REG SWTCHD CAP 5V 50MA 8SOIC

LTC1514IS8-5#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP,
Contacts8
Manufacturer packaging codeS8
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR REGULATOR
Maximum input voltage10 V
Minimum input voltage2.7 V
Nominal input voltage3 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9025 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.05 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.752 mm
surface mountYES
Switch configurationDOUBLER INVERTER
Maximum switching frequency800 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.899 mm
Base Number Matches1
LTC1514-3.3/LTC1514-5
Step-Up/Step-Down Switched
Capacitor DC/DC Converters
with Low-Battery Comparator
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTION
The LTC
®
1514-3.3/LTC1514-5 are micropower switched
capacitor DC/DC converters that produce a regulated
output voltage by either stepping up or stepping down
the input voltage. Output voltage is fixed at either 3.3V
(LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor
divider.
A unique architecture allows the parts to accommodate
a wide input voltage range (2V to 10V) while maintaining
±4%
regulation. Additional circuitry prevents excessive
inrush current and output voltage ripple when large V
IN
to V
OUT
differentials are present.
An internal uncommitted comparator is kept active in
shutdown. The comparator has an open-drain output for
flexible interfacing.
The parts are short-circuit and overtemperature pro-
tected. Battery life is maximized by very low operating
currents (I
CC
= 60µA typ, 10µA in shutdown). Both parts
are available in an SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
3.3V or 5V Output Voltages
2V to 10V Input Voltage Range
Up to 50mA Output Current
Only Three External Capacitors Required
Soft Start Limits Inrush Current at Turn-On
Low Operating Current: 60µA
Low Shutdown Current: 10µA
Shutdown Disconnects Load from V
IN
Short-Circuit and Overtemperature Protected
650kHz Switching Frequency
Low-Battery Comparator Active in Shutdown
Available in SO-8 Package
APPLICATIONS
s
s
s
s
s
Battery-Operated Equipment
Smart Card Readers
Local Power Supplies
Handheld Instruments
Battery Backup Supplies
TYPICAL APPLICATION
5V Step-Up/Step-Down Power Supply with Low-Battery Detect
5.2
100k
1.33M
1%
ON OFF
LOW BAT
1
2
3
499k
1%
4
LTC1514-5
SHDN
LBO
LBI
GND
V
OUT
V
IN
C1
+
C1
OUTPUT VOLTAGE (V)
8
7
6
5
0.22µF
V
OUT
= 5V
I
OUT
= 50mA
5.1
I
OUT
= 10mA
+
10µF
+
10µF
1514 TA01
V
IN
4-CELL
NiCd
5.0
4.9
4.8
U
2
U
U
LTC1514-5 Output Voltage
vs Input Voltage
3
4
5
8
6
7
INPUT VOLTAGE (V)
9
10
LT1514 • TA02
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