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LTC1473LCGN#PBF

Description
IC OR CTRLR SRC SELECT 16SSOP
CategoryPower/power management    The power supply circuit   
File Size156KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC1473LCGN#PBF Overview

IC OR CTRLR SRC SELECT 16SSOP

LTC1473LCGN#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP,
Contacts16
Manufacturer packaging codeGN
Reach Compliance Codecompliant
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length4.9 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply voltage (Vsup)9 V
Minimum supply voltage (Vsup)2.8 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9116 mm
Base Number Matches1
LTC1473L
Dual Low Voltage
PowerPath
TM
Switch Driver
FEATURES
s
s
s
DESCRIPTIO
s
s
s
s
s
Power Path Management for Systems
with Multiple DC Sources
Switches and Isolates Sources from 3.3V to 10V
All N-Channel Switching to Reduce Power Losses
and System Cost
Built-In Step-Up Regulator for N-Channel Gate Drive
Capacitor Inrush and Short-Circuit Current Limited
User-Programmable Timer Prevents Overdissipation
During Current Limiting
Undervoltage Lockout Prevents Operation with Low
Inputs
Small Footprint: 16-Pin Narrow SSOP
The LTC
®
1473L provides reliable and efficient switching
between two DC power sources. This device drives two
external sets of back-to-back N-channel MOSFET switches
to route power to the input of a low voltage system. An
internal boost regulator provides the voltage to fully en-
hance the logic-level N-channel MOSFET switches while
an internal undervoltage lock-out circuit keeps the system
alive down to 2.8V.
The LTC1473L senses current to limit inrush between the
batteries and the system supply capacitor during switch-
over transitions or during fault conditions. A user-pro-
grammable timer monitors the time the MOSFET switches
are in current limit and latches them off when the pro-
grammed time is exceeded.
A unique “2-diode” logic mode ensures system start-up
regardless of which input receives power first.
, LTC and LT are registered trademarks of Linear Technology Corporation.
PowerPath is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Portable Computers
Portable Instruments
Fault Tolerant Computers
Battery-Backup Systems
3.3V/5V Power Management
TYPICAL APPLICATIO
DCIN
3.3V
3.3V to 4-Cell NiMH Backup Switch
Si9926DY
BAT54C
LOGIC
DRIVEN
V
BAT1
4× NiMH
1
2
3
4
5
6
LTC1473L
IN1
IN2
DIODE
TIMER
V
+
V
GG
SW
GND
GA1
SAB1
GB1
SENSE
+
SENSE
GA2
SAB2
GB2
16
15
14
13
12
11
10
9
R
SENSE
0.04Ω
C
TIMER
2000pF
1mH*
1µF
1µF
7
8
* COILCRAFT 1812LS-105XKBC
Si9926DY
U
+
C
OUT
3.3V OR
V
BAT1
1473 TA01
U
U
1

LTC1473LCGN#PBF Related Products

LTC1473LCGN#PBF LTC1473LCGN#TR LTC1473LCGN#TRPBF
Description IC OR CTRLR SRC SELECT 16SSOP IC OR ctrlr src select 16ssop IC OR CTRLR SRC SELECT 16SSOP
Brand Name Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to incompatible conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code SSOP SSOP SSOP
package instruction SSOP, SSOP, SSOP,
Contacts 16 16 16
Manufacturer packaging code GN GN GN
Reach Compliance Code compliant compliant compliant
ECCN code EAR99 EAR99 EAR99
Adjustable threshold NO NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16
JESD-609 code e3 e0 e3
length 4.9 mm 4.9 mm 4.9 mm
Humidity sensitivity level 1 1 1
Number of channels 2 2 2
Number of functions 1 1 1
Number of terminals 16 16 16
Maximum operating temperature 70 °C 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 235 260
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.75 mm
Maximum supply voltage (Vsup) 9 V 9 V 9 V
Minimum supply voltage (Vsup) 2.8 V 2.8 V 2.8 V
Nominal supply voltage (Vsup) 5 V 5 V 5 V
surface mount YES YES YES
technology CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 0.635 mm 0.635 mm 0.635 mm
Terminal location DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 30
width 3.9116 mm 3.9116 mm 3.9116 mm
Base Number Matches 1 1 1
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