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LTC1515CS8

Description
Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset
CategoryPower/power management    The power supply circuit   
File Size195KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1515CS8 Overview

Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset

LTC1515CS8 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Manufacturer packaging codeS8
Reach Compliance Code_compli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR REGULATOR
Maximum input voltage10 V
Minimum input voltage2 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.05 A
Maximum output voltage12 V
Minimum output voltage1.232 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationDOUBLER INVERTER
Maximum switching frequency650 kHz
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.9 mm
LTC1515 Series
Step-Up/Step-Down
Switched Capacitor DC/DC
Converters with Reset
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTION
The LTC
®
1515, LTC1515-3/5 and LTC1515-3.3/5 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
adjustable using an external resistor divider (LTC1515) or
programmable to either 3V/5V (LTC1515-3/5) or 3.3V/5V
(LTC1515-3.3/5) using a logic pin.
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 power-on reset circuit forces the POR pin low
on initial power-up. The POR output remains low until
200ms (typ) after V
OUT
is in regulation.
The parts are short-circuit and overtemperature protected.
Battery life is maximized by very low operating currents
(I
CC
= 60µA typ, I
CC
< 1µA in shutdown). All three parts are
available in an SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Adjustable/Selectable 3V, 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
Very Low Shutdown Current: < 1µA
Shutdown Disconnects Load from V
IN
V
OUT
Programmable to 3V/5V or 3.3V/5V
Short-Circuit and Overtemperature Protected
650kHz Switching Frequency
Open-Drain Power-On Reset Output
Daisy-Chained Control Outputs
Available in SO-8 Package
APPLICATIONS
s
s
s
s
SIM Interface in GSM Cellular Telephones
Smart Card Readers
Local Power Supplies
Portable Equipment
TYPICAL APPLICATION
Programmable 3.3V/5V Power Supply with Power-On Reset
100k
LTC1515-X 5V Output vs Input Voltage
5.2
I
OUT
= 10mA
5/3 = 3V
OUTPUT VOLTAGE (V)
ON OFF
RESET
5V 3.3V
1
2
SHDN
V
OUT
8
V
OUT
= 3.3V OR 5V
I
OUT
= 50mA
5.1
7
POR
V
IN
LTC1515-3.3/5
3
6
5/3
C1
+
4
GND
C1
5
0.22µF
+
10µF
+
10µF
V
IN
4-CELL
NiCd
5.0
4.9
LTC1515 • TA01
4.8
2
U
U
U
3
4
5
8
6
7
INPUT VOLTAGE (V)
9
10
LT1515 • TA02
1

LTC1515CS8 Related Products

LTC1515CS8 LTC1515CS8-3/5 LTC1515IS8-3.3/5 LTC1515IS8-3/5 LTC1515CS8-3.3/5
Description Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible
Parts packaging code SOIC SOIC SOIC SOIC SOIC
package instruction SOP, SOP8,.25 0.150 INCH, PLASTIC, SO-8 0.150 INCH, PLASTIC, SO-8 0.150 INCH, PLASTIC, SO-8 0.150 INCH, PLASTIC, SO-8
Contacts 8 8 8 8 8
Manufacturer packaging code S8 S8 S8 S8 S8
Reach Compliance Code _compli _compli _compli _compli _compli
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR SWITCHED CAPACITOR REGULATOR
Maximum input voltage 10 V 8 V 8 V 8 V 8 V
Minimum input voltage 2 V 2 V 2 V 2 V 2 V
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e0 e0 e0 e0 e0
length 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm
Humidity sensitivity level 1 1 1 1 1
Number of functions 1 1 1 1 1
Number of terminals 8 8 8 8 8
Maximum operating temperature 70 °C 70 °C 85 °C 85 °C 70 °C
Maximum output current 0.05 A 0.05 A 0.05 A 0.05 A 0.05 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP
Encapsulate equivalent code SOP8,.25 SOP8,.25 SOP8,.25 SOP8,.25 SOP8,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 235 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm
surface mount YES YES YES YES YES
Switch configuration DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER DOUBLER INVERTER
Maximum switching frequency 650 kHz 800 kHz 800 kHz 800 kHz 800 kHz
technology CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 20 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm
Nominal output voltage - 5 V 5 V 5 V 5 V
Base Number Matches - 1 - 1 1
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