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Datasheet> All Categories > Power/power management> The power supply circuit> LTC1522IS8#TR
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LTC1522IS8#TR

Description
IC reg switched cap 5V 8soic
CategoryPower/power management    The power supply circuit   
File Size197KB，8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC1522IS8#TR Overview

IC reg switched cap 5V 8soic

LTC1522IS8#TR 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 Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR CONVERTER
Maximum input voltage5 V
Minimum input voltage2.7 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.02 A
Nominal output voltage5 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)255
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3.9 mm

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Download Datasheet
LTC1522
Micropower, Regulated
5V Charge Pump
DC/DC Converter
FEATURES
s
s
s
s
s
s
s
DESCRIPTION
The LTC
®
1522 is a micropower charge pump DC/DC
converter that produces a regulated 5V output from a 2.7V
to 5V input supply. Extremely low supply current (6µA
typical with no load, < 1µA in shutdown) and low external
parts count (one 0.22µF flying capacitor and two 10µF
capacitors at V
IN
and V
OUT
) make the LTC1522 ideally
suited for small, light load battery-powered applications.
Typical efficiency (V
IN
= 3V) exceeds 75% with load
currents between 50µA and 20mA. Modulating the SHDN
pin keeps the typical efficiency above 75% with load
currents all the way down to 10µA.
The LTC1522 has thermal shutdown and can survive a
continuous short from V
OUT
to GND. In shutdown the
load is disconnected from V
IN
. The part is available in
8-pin MSOP and SO packages. The LTC1522 is pin
compatible with the LTC1516 in applications where
V
IN
≥
2.7V and I
OUT
≤
20mA.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
s
s
Ultralow Power: Typical Operating I
CC
= 6µA
Short-Circuit/Thermal Protected
Regulated 5V
±4%
Output Voltage
2.7V to 5V Input Range
No Inductors
Very Low I
CC
in Shutdown: < 1µA
Output Current: 10mA (V
IN
≥
2.7V)
20mA (V
IN
≥
3V)
Shutdown Disconnects Load from V
IN
Internal Oscillator: 700kHz
Compact Application Circuit (< 0.1 in
2
)
8-Pin MSOP and SO Packages
APPLICATIONS
s
s
s
s
s
SIM Interface Supplies for GSM Cellular Telephones
Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
TYPICAL APPLICATION
Regulated 5V Output from a 2.7V to 5V Input
V
IN
2.7V TO 5V
1
Efficiency vs Output Current
90
V
IN
= 3V
+
10µF
2
3
NC
V
IN
V
OUT
C
+
0.22µF
NC
SHDN
LTC1522
GND
C
–
8
7
6
5
ON/OFF
80
EFFICIENCY (%)
+
10µF 4
70
SHDN = 0V
60
V
OUT
= 5V
±4%
I
OUT
= 0mA TO 10mA, V
IN
≥
2.7V
I
OUT
= 0mA TO 20mA, V
IN
≥
3V
1522 TA01
50
0.01
U
U
U
LOW I
Q
MODE
(SEE FIGURE 2)
0.1
1
10
OUTPUT CURRENT (mA)
100
1522 TA02
1

LTC1522IS8#TR Related Products

LTC1522IS8#TR LTC1522CS8#TR LTC1522IS8 LTC1522CMS8#TR LTC1522CS8#TRPBF LTC1522IS8#PBF LTC1522IS8#TRPBF LTC1522CMS8#PBF LTC1522CMS8#TRPBF LTC1522CS8#PBF
Description IC reg switched cap 5V 8soic IC reg switched cap 5V 8soic IC reg switched cap 5V 8soic IC reg switched cap 5V 8msop IC REG SWTCHD CAP 5V 20MA 8SOIC IC REG SWTCHD CAP 5V 20MA 8SOIC IC REG SWTCHD CAP 5V 20MA 8SOIC IC REG SWTCHD CAP 5V 20MA 8MSOP IC REG SWTCHD CAP 5V 20MA 8MSOP Output current: 20mA Switching operating frequency: 700kHz Output type: Fixed Number of output voltage channels: 1 Function type: Step-Up Output configuration: Positive high power, constant current, constant voltage, step-down controller
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible incompatible incompatible conform to conform to conform to conform to conform to conform to
Parts packaging code SOIC SOIC SOIC MSOP SOIC SOIC SOIC MSOP MSOP SOIC
package instruction SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 TSSOP, TSSOP8,.19 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 TSSOP, TSSOP8,.19 TSSOP, TSSOP8,.19 SOP, SOP8,.25
Contacts 8 8 8 8 8 8 8 8 8 8
Manufacturer packaging code S8 S8 S8 MS8 S8 S8 S8 MS8 MS8 S8
Reach Compliance Code compli _compli _compli not_compliant compliant compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHED CAPACITOR CONVERTER SWITCHING REGULATOR SWITCHED CAPACITOR CONVERTER SWITCHING REGULATOR SWITCHING REGULATOR SWITCHED CAPACITOR CONVERTER SWITCHED CAPACITOR CONVERTER SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
Maximum input voltage 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
Minimum input voltage 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 S-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 S-PDSO-G8 S-PDSO-G8 R-PDSO-G8
JESD-609 code e0 e0 e0 e0 e3 e3 e3 e3 e3 e3
length 4.9 mm 4.9 mm 4.9 mm 3 mm 4.9025 mm 4.9 mm 4.9 mm 3 mm 3 mm 4.9 mm
Humidity sensitivity level 1 1 1 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8 8 8 8
Maximum operating temperature 85 °C 70 °C 85 °C 70 °C 70 °C 85 °C 85 °C 70 °C 70 °C 70 °C
Maximum output current 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A 0.02 A
Nominal output voltage 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP TSSOP SOP SOP SOP TSSOP TSSOP SOP
Encapsulate equivalent code SOP8,.25 SOP8,.25 SOP8,.25 TSSOP8,.19 SOP8,.25 SOP8,.25 SOP8,.25 TSSOP8,.19 TSSOP8,.19 SOP8,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR SQUARE RECTANGULAR RECTANGULAR RECTANGULAR SQUARE SQUARE RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE
Peak Reflow Temperature (Celsius) 255 235 235 235 260 260 260 260 260 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.752 mm 1.75 mm 1.1 mm 1.752 mm 1.75 mm 1.75 mm 1.1 mm 1.17 mm 1.75 mm
surface mount YES YES YES YES YES YES YES YES YES YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 0.65 mm 1.27 mm 1.27 mm 1.27 mm 0.65 mm 0.65 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 40 20 20 20 30 30 30 30 30 30
width 3.9 mm 3.9 mm 3.9 mm 3 mm 3.899 mm 3.9 mm 3.9 mm 3 mm 3 mm 3.9 mm
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - Linear ( ADI ) Linear ( ADI )

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