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LTC1504CS8

Description
500mA Low Voltage Step-Down Synchronous Switching Regulator
CategoryPower/power management    The power supply circuit   
File Size250KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1504CS8 Overview

500mA Low Voltage Step-Down Synchronous Switching Regulator

LTC1504CS8 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 TypesSWITCHING REGULATOR
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage10 V
Minimum input voltage4 V
Nominal input voltage5 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 current1 A
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 configurationBUCK
Maximum switching frequency250 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
Final Electrical Specifications
LTC1504
500mA Low Voltage
Step-Down Synchronous
Switching Regulator
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTION
The LTC
®
1504 is a self-contained, high efficiency syn-
chronous buck switching regulator. It includes a pair of
on-chip 1.5Ω power switches, enabling it to supply up to
500mA of load current. Efficiency peaks at 92%, minimiz-
ing heat and wasted power. The synchronous buck archi-
tecture allows the output to source or sink current as
required to keep the output voltage in regulation.
The LTC1504 is available in adjustable and fixed 3.3V
output versions. An adjustable current limit circuit pro-
vides protection from overloads. The internal 1% refer-
ence combined with a sophisticated voltage feedback loop
provides optimum output voltage accuracy and fast load
transient response. The LTC1504 is specified to operate
with input voltages between 4V and 10V. Contact the LTC
factory for guaranteed specifications at 2.7V supply.
The LTC1504 is available in a plastic SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
500mA Output Current at 3.3V Output
Up to 92% Peak Efficiency
Internal Reference Trimmed to 1%
Output Can Source or Sink Current
Requires as Few as Four External Components
Input Voltage Range: 4V to 10V
Adjustable Current Limit
Small SO-8 Package
200kHz Switching Frequency Can be
Synchronized Up to 500kHz
APPLICATIONS
s
s
s
s
Small Portable Digital Systems
Control Outputs
Daisy-Chained
Active Termination
Auxiliary Output Voltage Supplies
Minimum Part Count/Size Switchers
TYPICAL APPLICATION
Minimum Part Count 5V to 3.3V Regulator
NC
I
MAX
5V
SHUTDOWN
SHDN
SW
L
EXT
3.3V AT 500mA
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
1504 • TA01
5V to 3.3V Efficiency
+
C
IN
V
CC
LTC1504-3.3
GND
SS
SENSE
COMP
1000pF
+
C
OUT
C
IN
: AVX TPSC226M016R0375
C
OUT
: AVX TAJC476M010
L
EXT
: COILTRONICS CTX50-1P
NC
10
0
10
100
LOAD CURRENT (mA)
500
1504 • TA02
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
U
U
1

LTC1504CS8 Related Products

LTC1504CS8 LTC1504CS8-3.3 LTC1504
Description 500mA Low Voltage Step-Down Synchronous Switching Regulator 500mA Low Voltage Step-Down Synchronous Switching Regulator 500mA Low Voltage Step-Down Synchronous Switching Regulator
Brand Name Linear Technology Linear Technology -
Is it Rohs certified? incompatible incompatible -
Maker Linear ( ADI ) Linear ( ADI ) -
Parts packaging code SOIC SOIC -
package instruction SOP, SOP8,.25 0.150 INCH, PLASTIC, SO-8 -
Contacts 8 8 -
Manufacturer packaging code S8 S8 -
Reach Compliance Code _compli _compli -
ECCN code EAR99 EAR99 -
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR -
control mode VOLTAGE-MODE VOLTAGE-MODE -
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION -
Maximum input voltage 10 V 10 V -
Minimum input voltage 4 V 4 V -
Nominal input voltage 5 V 5 V -
JESD-30 code R-PDSO-G8 R-PDSO-G8 -
JESD-609 code e0 e0 -
length 4.9 mm 4.9 mm -
Humidity sensitivity level 1 1 -
Number of functions 1 1 -
Number of terminals 8 8 -
Maximum operating temperature 70 °C 70 °C -
Maximum output current 1 A 1 A -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code SOP SOP -
Encapsulate equivalent code SOP8,.25 SOP8,.25 -
Package shape RECTANGULAR RECTANGULAR -
Package form SMALL OUTLINE SMALL OUTLINE -
Peak Reflow Temperature (Celsius) 235 235 -
Certification status Not Qualified Not Qualified -
Maximum seat height 1.75 mm 1.75 mm -
surface mount YES YES -
Switch configuration BUCK BUCK -
Maximum switching frequency 250 kHz 250 kHz -
technology CMOS CMOS -
Temperature level COMMERCIAL COMMERCIAL -
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) -
Terminal form GULL WING GULL WING -
Terminal pitch 1.27 mm 1.27 mm -
Terminal location DUAL DUAL -
Maximum time at peak reflow temperature 20 20 -
width 3.9 mm 3.9 mm -
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