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LTC3216EDE#TRPBF

Description
LED Driver 1 Segment 9200uA Supply Current 12-Pin DFN EP T/R
File Size166KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3216EDE#TRPBF Overview

LED Driver 1 Segment 9200uA Supply Current 12-Pin DFN EP T/R

LTC3216EDE#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Number of Segments1
Minimum Operating Supply Voltage (V)2.9
Maximum Operating Supply Voltage (V)4.4
Typical Operating Supply Voltage (V)3.3
Maximum Supply Current (uA)9200
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Standard Package NameDFN
Pin Count12
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length4
Package Width3
PCB changed12
Lead ShapeNo Lead
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
LTC3216
1A Low Noise High Current
LED Charge Pump with
Independent Torch/Flash Current Control
DESCRIPTION
The LTC
®
3216 is a low noise, high current charge pump
DC/DC converter designed to power high current LEDs.
The part includes an accurate programmable current
source capable of driving loads up to 1A from a 2.9V to
4.4V input. Low external parts count (two flying capacitors,
two programming resistors and two bypass capacitors at
V
IN
and CPO) make the LTC3216 ideally suited for small,
battery-powered applications.
Built-in soft-start circuitry prevents excessive inrush cur-
rent during start-up. High switching frequency enables
the use of small external capacitors. Independent high
and low current settings are programmed by two external
resistors. Shutdown mode and current output levels are
selected via two logic inputs.
An ultralow dropout current source maintains accurate
LED current at very low I
LED
voltages. Automatic mode
switching optimizes efficiency by monitoring the voltage
across the LED current source and switching modes only
when I
LED
dropout is detected. The LTC3216 is available
in a small 3mm
×
4mm 12-Lead DFN package.
L,
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.
High Efficiency Operation: 1x, 1.5x or 2x Boost
Modes with Automatic Mode Switching
Ultralow Dropout I
LED
Current Control
Output Current up to 1A
Low Noise Constant Frequency Operation
Independent Low Current/High Current
Programming and Enable Pins
Wide V
IN
Range: 2.9V to 4.4V
Open/Shorted LED Protection
LED Disconnect in Shutdown
Low Shutdown Current: 2.5μA
4% LED Current Programming Accuracy
Automatic Soft-Start Limits Inrush Current
No Inductors
Tiny Application Circuit (All Components <1mm
Profile)
3mm
×
4mm 12-Lead DFN Package
APPLICATIONS
n
n
LED Torch/Camera Light Supply for Cell Phones,
PDAs and Digital Cameras
Generic Lighting and/or Flash/Strobe Applications
TYPICAL APPLICATION
C1
2.2μF
C2
2.2μF
Torch Mode Efficiency vs V
IN
100
90
EFFICIENCY (P
LED
/PIN) (%)
I
LED
= 200mA
C1
2.9V TO 4.4V
C
IN
2.2μF
+
C1
C2
+
C2
CPO
C
CPO
4.7μF
LED1
80
70
60
50
40
30
20
10
0
2.8 3.0
3.2
3.4 3.6 3.8
V
IN
(V)
4.0
P
LED
/PIN
LUMILEDS LXCL-PWF1
V
F
= 3V TYP AT 200mA
4.2
4.4
V
IN
LTC3216
I
LED
EN1 (TORCH)
EN2 (FLASH)
EN1
EN2
I
SET1
20k
1%
I
SET2
6.65k
1%
EN1
0
1
0
1
EN2
0
0
1
1
I
LED
0 (SHUTDOWN)
200mA (TORCH)
600mA
800mA (FLASH)
3216 TA01a
LED1: LUMILEDS LXCL-PWF1 LUXEON FLASH
3216 TA01b
3216fc
1

LTC3216EDE#TRPBF Related Products

LTC3216EDE#TRPBF LTC3216EDE#PBF
Description LED Driver 1 Segment 9200uA Supply Current 12-Pin DFN EP T/R LED Driver 1 Segment 9200uA Supply Current 12-Pin DFN EP Tube
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 1 1
Minimum Operating Supply Voltage (V) 2.9 2.9
Maximum Operating Supply Voltage (V) 4.4 4.4
Typical Operating Supply Voltage (V) 3.3 3.3
Maximum Supply Current (uA) 9200 9200
Minimum Operating Temperature (°C) -40 -40
Maximum Operating Temperature (°C) 85 85
Supplier Temperature Grade Extended Extended
Packaging Tape and Reel Tube
Standard Package Name DFN DFN
Pin Count 12 12
Supplier Package DFN EP DFN EP
Mounting Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max)
Package Length 4 4
Package Width 3 3
PCB changed 12 12
Lead Shape No Lead No Lead
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