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LTC3210EUD#PBF

Description
LED Driver 5 Segment 4500uA Supply Current 16-Pin QFN EP Tube
File Size246KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3210EUD#PBF Overview

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

LTC3210EUD#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
MAIN/CAM LED Controller
in 3mm
×
3mm QFN
Description
The LTC
®
3210 is a low noise charge pump DC/DC converter
designed to drive four MAIN LEDs and one high current
CAM LED for camera lighting. The LTC3210 requires only
four small ceramic capacitors and two current set resis-
tors 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.
The full-scale current through the LEDs is programmed
via external resistors. ENM and ENC are toggled to adjust
the LED currents via internal counters and DACs. The
part is shut down when both ENM and ENC are low for
150µs (typ).
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 en-
ter dropout. The LTC3210 is 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 (8 Brightness Steps)
64:1 Brightness Control Range for MAIN Display
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
4-LED MAIN Display
Efficiency vs V
BAT
Voltage
100
90
EFFICIENCY (P
LED
/P
IN
) (%)
C1P
V
BAT
C1
2.2µF
V
BAT
C1M
C2P
C2M
CPO
C4
2.2µF
MLED1
MLED2
MLED3
MAIN
CAM
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)
LTC3210
ENM
ENC
ENM
ENC
RM
30.1k
1%
RC
24.3k
1%
MLED4
CLED
GND
3210 TA01
4.4
3210 TA01b
3210fb


LTC3210EUD#PBF Related Products

LTC3210EUD#PBF LTC3210EUD#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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