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LTC1504IS8-3.3#PBF

Description
IC REG BUCK 3.3V 0.5A SYNC 8SOIC
Categorysemiconductor    Power management   
File Size250KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC1504IS8-3.3#PBF Overview

IC REG BUCK 3.3V 0.5A SYNC 8SOIC

LTC1504IS8-3.3#PBF Parametric

Parameter NameAttribute value
Functionstep down
Output configurationjust
Topologystep down
Output typefixed
Number of outputs1
Voltage - Input (minimum)4V
Voltage - input (maximum)10V
Voltage - Output (minimum/fixed)3.3V
Voltage - Output (maximum)-
Current - Output500mA
Frequency - Switch200kHz
Synchronous rectifieryes
Operating temperature0°C ~ 70°C(TA)
Installation typesurface mount
Package/casing8-SOIC (0.154", 3.90mm wide)
Supplier device packaging8-SOIC
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
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