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LT3465AES6

Description
LED Driver 6 Segment 5uA Supply Current 6-Pin TSOT-23
File Size319KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LT3465AES6 Overview

LED Driver 6 Segment 5uA Supply Current 6-Pin TSOT-23

LT3465AES6 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
Number of Segments6
Number of LED Outputs1
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)16
Typical Operating Supply Voltage (V)15|12|9|5|3.3
Maximum Supply Current (uA)5
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
Standard Package NameSOT-23
Pin Count6
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed6
Lead ShapeGull-wing
LT3465/LT3465A
1.2MHz/2.4MHz White
LED Drivers with Built-in
Schottky in ThinSOT
FEATURES
DESCRIPTIO
Inherently Matched LED Current
Drives Up to Six LEDs from a 3.6V Supply
No External Schottky Diode Required
1.2MHz Switching Frequency (LT3465)
2.4MHz Switching Frequency Above AM Broadcast
Band (LT3465A)
V
IN
Range: 2.7V to 16V
V
OUT(MAX)
= 30V
Automatic Soft-Start (LT3465)
Open LED Protection
High Efficiency: 81% (LT3465) 79% (LT3465A)
Typical
Requires Only 0.22µF Output Capacitor
Low Profile (1mm) SOT-23
The LT
®
3465/LT3465A are step-up DC/DC converters
designed to drive up to six LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED
currents and eliminates the need for ballast resistors.
These devices integrate the Schottky diode required exter-
nally on competing devices. Additional features include
output voltage limiting when LEDs are disconnected, one-
pin shutdown and dimming control. The LT3465 has
internal soft-start.
The LT3465 switches at 1.2MHz, allowing the use of tiny
external components. The faster LT3465A switches at
2.4MHz. Constant frequency switching results in low input
noise and a small output capacitor. Just 0.22µF is required
for 3-, 4- or 5-LED applications.
The LT3465 and LT3465A are available in the low profile
(1mm) 6-lead SOT-23 (ThinSOT
TM
) package.
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a
trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
APPLICATIO S
Cellular Phones
PDAs, Handheld Computers
Digital Cameras
MP3 Players
GPS Receivers
TYPICAL APPLICATIO
L1
22µH
3V TO 5V
Conversion Efficiency
V
IN
= 3.6V
80 4 LEDs
78
EFFICIENCY (%)
SW
V
IN
SHUTDOWN
AND DIMMING
CONTROL
C1
1µF
LT3465/
LT3465A
FB
CTRL
GND
C2
0.22µF
10Ω
3465A F01a
82
V
OUT
76
74
72
70
68
66
64
62
60
0
5
10
LED CURRENT (mA)
3465A F01b
C1, C2: X5R OR X7R DIELECTRIC
L1: MURATA LQH32CN220
Figure 1. Li-Ion Powered Driver for Four White LEDs
U
LT3465
LT3465A
15
20
3465afa
U
U
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