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LTC3212EDDB#TRPBF

Description
LED Driver 3 Segment 2000uA Supply Current 12-Pin DFN EP T/R
File Size557KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3212EDDB#TRPBF Overview

LED Driver 3 Segment 2000uA Supply Current 12-Pin DFN EP T/R

LTC3212EDDB#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Number of Segments3
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)5.5
Typical Operating Supply Voltage (V)3.3|5
Maximum Supply Current (uA)2000(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTape and Reel
Standard Package NameDFN
Pin Count12
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed12
Lead ShapeNo Lead
LTC3212
RGB LED Driver and
Charge Pump
FeaTures
DescripTion
The LTC
®
3212 is a low noise charge pump RGB LED
driver capable of driving three LEDs up to 25mA each
from a 2.7V to 5.5V input. Low external part count (one
flying capacitor, two bypass capacitors and one to three
programming resistors) makes the LTC3212 ideally suited
for small, battery-powered applications.
Built-in soft-start circuitry prevents excessive inrush cur-
rent during start-up and mode switching. High switching
frequency enables the use of small external capacitors.
The charge pump shuts down to a high impedance mode
to prevent LED leakage while the LTC3212 is off.
Each LED may be individually turned on or off via a single
pin interface. The current through the LEDs may be indi-
vidually programmed with resistors or may share a single
programming resistor. White mode adjusts the red, green
and blue LED current ratios for a white light when all three
LEDs are programmed to be on.
LED currents are regulated using internal low dropout
current sources. Automatic mode switching optimizes
efficiency by monitoring the LED current drivers and
switches mode only when dropout is detected. The part
is available in a 3mm
×
2mm 12-lead DFN package.
Power and Current Control for Driving RGB LEDs
Individually Programmable Current Sources
1x or 2x Mode, Low Noise, Constant Frequency
Charge Pump
Single Wire Enable Control for All LEDs
White Mode Adjusts R, G, B Currents for White Light
25mA Maximum LED Current
V
IN
Range: 2.7V to 5.5V
Automatic Soft-Start, Mode Switching and Output
Disconnect in Shutdown Mode
Available in 12-Lead (3mm
×
2mm) DFN Package
applicaTions
Cellular Phones
Media Players
RGB Back Lights
, LT, LTC and LTM 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
RGB Power Supply and Current Control
1µF
V
IN
2.7V TO 5.5V
CM
V
IN
1µF
LEDEN
I
SETB
I
SETR
I
SETG
11.8k
CP
CPO
R
G
B
1µF
LTC3212
LEDR
LEDG
LEDB
INDIVIDUAL WHITE
SETTINGS MODE
LEDR
LEDG
LEDB
15mA
15mA
15mA
13.5mA
15mA
11.2mA
3212 TA01a
3212fb


LTC3212EDDB#TRPBF Related Products

LTC3212EDDB#TRPBF LTC3212EDDB#PBF LTC3212EDDB#TRMPBF
Description LED Driver 3 Segment 2000uA Supply Current 12-Pin DFN EP T/R LED Driver 3 Segment 2000uA Supply Current 12-Pin DFN EP T/R LED Driver 3 Segment 2000uA Supply Current 12-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant
ECCN (US) EAR99 - EAR99
Part Status Active Unconfirmed Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01
Number of Segments 3 3 3
Minimum Operating Supply Voltage (V) 2.7 2.7 2.7
Maximum Operating Supply Voltage (V) 5.5 5.5 5.5
Typical Operating Supply Voltage (V) 3.3|5 3.3|5 3.3|5
Maximum Supply Current (uA) 2000(Typ) 2000(Typ) 2000(Typ)
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85
Packaging Tape and Reel Tape and Reel Tape and Reel
Standard Package Name DFN DFN DFN
Pin Count 12 12 12
Supplier Package DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 3 3 3
Package Width 2 2 2
PCB changed 12 12 12
Lead Shape No Lead No Lead No Lead
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