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LTC3490EDD#PBF

Description
LED Driver 1 Segment 30000uA Supply Current 8-Pin DFN EP Tube
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size143KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC3490EDD#PBF Overview

LED Driver 1 Segment 30000uA Supply Current 8-Pin DFN EP Tube

LTC3490EDD#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionHVSON,
Contacts8
Manufacturer packaging code05-08-1698
Reach Compliance Codecompliant
Interface integrated circuit typeLED DISPLAY DRIVER
JESD-30 codeS-PDSO-N8
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Multiplex display functionNO
Number of functions1
Number of segments1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum supply voltage3.2 V
Minimum supply voltage1 V
Nominal supply voltage2.5 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceMATTE TIN
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3 mm
Base Number Matches1
LTC3490
Single Cell 350mA
LED Driver
FEATURES
DESCRIPTIO
350mA Constant Current Output
2.8V to 4V Output Compliance
1- or 2-Cell NiMH or Alkaline Input
Synchronous Rectification: Up to 90% Efficiency
Fixed Frequency Operation: 1.3MHz
Low Quiescent Current: <1mA
Very Low Shutdown Current: <50µA
Open LED Output Limited to 4.7V
V
IN
Range: 1V to 3.2V
Dimming Control
Undervoltage Lockout to Protect Batteries
Low Profile (0.75mm) 3mm
×
3mm Thermally
Enhanced 8-Lead DD and S8 Packages
The LTC
®
3490 provides a constant current drive for 1W
LED applications. It is a high efficiency boost converter
that operates from 1 or 2 NiMH or alkaline cells and
generates 350mA of constant current with up to 4V of
compliance. It contains a 100mΩ NFET switch and a
130mΩ PFET synchronous rectifier. The fixed switching
frequency is internally set to 1.3MHz.
The LTC3490 limits the output voltage to 4.7V if the output
load is disconnected. It also features an analog dimming
capability that reduces the drive current proportional to
the CTRL/SHDN pin voltage. A low-battery logic output
signals when the battery has dropped below 1V/cell. An
undervoltage lockout circuit shuts down the LTC3490
when the battery voltage drops below 0.85V/cell. The
feedback loop is internally compensated to minimize com-
ponent count.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
Portable Lighting
Rechargeable Flashlights
TYPICAL APPLICATIO
3.3µH
Single Cell Minimum Component LED Driver
100
90
80
V
IN
ON/OFF
1 NiMH OR
ALKALINE
CELL
SW
CAP
LTC3490
CTRL/SHDN LED
CELLS
1M
GND
LOBAT
350mA
4.7µF
HIGH
CURRENT
LED
Efficiency vs V
IN
at V
LED
= 3.5V
I
OUT
= 350mA
70
EFFICIENCY (%)
60
50
40
30
20
10
+
3490 TA01
0
1
1.5
2
V
IN
(V)
2.5
3
3490 TA02
U
3490fa
U
U
1

LTC3490EDD#PBF Related Products

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Description LED Driver 1 Segment 30000uA Supply Current 8-Pin DFN EP Tube LED Driver 1 Segment 30000uA Supply Current 8-Pin DFN EP T/R LED Driver 1 Segment 30000uA Supply Current 8-Pin SOIC N Tube LED Driver 1 Segment 30000uA Supply Current 8-Pin SOIC N T/R LED Driver 30000uA Supply Current 8-Pin SOIC N
Is it Rohs certified? conform to conform to conform to conform to incompatible
Maker ADI ADI ADI ADI ADI
package instruction HVSON, HVSON, SOP, SOP, SOP,
Reach Compliance Code compliant compliant compliant compliant not_compliant
Interface integrated circuit type LED DISPLAY DRIVER LED DISPLAY DRIVER LED DISPLAY DRIVER LED DISPLAY DRIVER LED DISPLAY DRIVER
JESD-30 code S-PDSO-N8 S-PDSO-N8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e3 e3 e3 e0
length 3 mm 3 mm 4.9025 mm 4.9025 mm 4.9025 mm
Humidity sensitivity level 1 1 1 1 1
Number of functions 1 1 1 1 1
Number of segments 1 1 1 1 1
Number of terminals 8 8 8 8 8
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON SOP SOP SOP
Package shape SQUARE SQUARE RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 260 260 260 235
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm 1.752 mm 1.752 mm 1.752 mm
Maximum supply voltage 3.2 V 3.2 V 3.2 V 3.2 V 3.2 V
Minimum supply voltage 1 V 1 V 1 V 1 V 1 V
Nominal supply voltage 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V
surface mount YES YES YES YES YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface MATTE TIN Matte Tin (Sn) MATTE TIN Matte Tin (Sn) Tin/Lead (Sn/Pb)
Terminal form NO LEAD NO LEAD GULL WING GULL WING GULL WING
Terminal pitch 0.5 mm 0.5 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 30 30 30 20
width 3 mm 3 mm 3.9 mm 3.9 mm 3.9 mm
Base Number Matches 1 1 1 1 1
Brand Name Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc -
Is it lead-free? Contains lead Contains lead Contains lead Contains lead -
Contacts 8 8 8 8 -
Manufacturer packaging code 05-08-1698 05-08-1698 05-08-1610 (S8) 05-08-1610 (S8) -
Multiplex display function NO - NO - NO
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