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LTC3210EUD-2#PBF

Description
LED Driver 5 Segment 4500uA Supply Current 16-Pin QFN EP Tube
File Size261KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3210EUD-2#PBF Overview

LED Driver 5 Segment 4500uA Supply Current 16-Pin QFN EP Tube

LTC3210EUD-2#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Number of Segments5
Minimum Operating Supply Voltage (V)2.9
Maximum Operating Supply Voltage (V)4.5
Typical Operating Supply Voltage (V)3.3
Maximum Supply Current (uA)4500(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTube
Standard Package NameQFN
Pin Count16
Supplier PackageQFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width3
PCB changed16
Lead ShapeNo Lead
LTC3210-2/LTC3210-3
MAIN/CAM LED Controllers
with 32-Step Brightness Control
in 3mm
×
3mm QFN
DescripTion
The LTC
®
3210-2/LTC3210-3 are low noise charge pump
DC/DC converters designed to drive three or four MAIN
LEDs and one high current CAM LED for camera lighting.
The LTC3210-2/LTC3210-3 require only four small ceramic
capacitors and two current set resistors to form a complete
LED power supply and current controller.
Built-in soft-start circuitry prevents excessive inrush cur-
rent during start-up and mode changes. High switching
frequency enables the use of small external capacitors.
Independent MAIN and CAM full-scale current settings
are programmed by two external resistors.
Shutdown mode and current output levels are selected
via two logic inputs. ENM and ENC are toggled to adjust
the LED currents via internal counters and DACs. A 5-bit
linear DAC (32 steps) provides high resolution brightness
control for the MAIN display.
The charge pump optimizes efficiency based on the volt-
age across the LED current sources. The part powers up
in 1x mode and will automatically switch to boost mode
whenever any enabled LED current source begins to
enter dropout. The LTC3210-2/LTC3210-3 are available
in a 3mm × 3mm 16-lead QFN package.
FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Low Noise Charge Pump Provides High Efficiency
with Automatic Mode Switching
Multimode Operation: 1x, 1.5x, 2x
Individual Full-Scale Current Set Resistors
Up to 500mA Total Output Current
Single Wire EN/Brightness Control for MAIN and
CAM LEDs
32:1 Linear Brightness Control Range for
MAIN Display
Three or Four 25mA Low Dropout MAIN LED Outputs
One 400mA Low Dropout CAM LED Output
Low Noise Constant Frequency Operation*
Low Shutdown Current: 3µA
Internal Soft-Start Limits Inrush Current During
Startup and Mode Switching
Open/Short LED Protection
No Inductors
3mm × 3mm 16-Lead Plastic QFN Package
applicaTions
n
Multi-LED Light Supply for Cellphones/DSCs/PDAs
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6411531.
Typical applicaTion
C2
2.2µF
C3
2.2µF
100
C1P
V
BAT
C1
2.2µF
V
BAT
LTC3210-2
MLED1
MLED2
MLED3
ENM
ENC
ENM
ENC
RM
30.1k
1%
RC
24.3k
1%
MLED4
CLED
GND
321023 TA01
4-LED MAIN Display
Efficiency vs V
BAT
Voltage
MAIN
C4
2.2µF
CAM
EFFICIENCY (P
LED
/P
IN
) (%)
90
80
70
60
50
40
30
20 4 LEDs AT 9mA/LED
10 (TYP V
F
AT 9mA = 3V, NICHIA NSCW100)
T
A
= 25°C
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
V
BAT
(V)
C1M
C2P
C2M
CPO
4.4
321023 TA01b
321023fb


LTC3210EUD-2#PBF Related Products

LTC3210EUD-2#PBF LTC3210EUD-2#TRPBF
Description LED Driver 5 Segment 4500uA Supply Current 16-Pin QFN EP Tube LED Driver 5 Segment 4500uA Supply Current 16-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant
ECCN (US) EAR99 EAR99
Part Status Active Active
HTS 8542.39.00.01 8542.39.00.01
Number of Segments 5 5
Minimum Operating Supply Voltage (V) 2.9 2.9
Maximum Operating Supply Voltage (V) 4.5 4.5
Typical Operating Supply Voltage (V) 3.3 3.3
Maximum Supply Current (uA) 4500(Typ) 4500(Typ)
Minimum Operating Temperature (°C) -40 -40
Maximum Operating Temperature (°C) 85 85
Supplier Temperature Grade Extended Extended
Packaging Tube Tape and Reel
Standard Package Name QFN QFN
Pin Count 16 16
Supplier Package QFN EP QFN EP
Mounting Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max)
Package Length 3 3
Package Width 3 3
PCB changed 16 16
Lead Shape No Lead No Lead
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