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LTC3215EDD#TRPBF

Description
LED Driver 1 Segment 9200uA Supply Current 10-Pin DFN EP T/R
File Size639KB,14 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3215EDD#TRPBF Overview

LED Driver 1 Segment 9200uA Supply Current 10-Pin DFN EP T/R

LTC3215EDD#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(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Standard Package NameDFN
Pin Count10
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width3
PCB changed10
Lead ShapeNo Lead
LTC3215
700mA Low Noise High
Current LED Charge Pump
FEATURES
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DESCRIPTION
The LTC
®
3215 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 700mA from a 2.9V to 4.4V
input. Low external parts count (two flying capacitors, one
programming resistor and two bypass capacitors) makes
the LTC3215 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. LED current is pro-
grammed with an external resistor. The LED is disconnected
from V
IN
during shutdown.
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 LTC3215 is available
in a low profile 3mm
×
3mm 10-Lead DFN package.
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.
n
High Efficiency Operation: 1x, 1.5x or 2x Boost
Modes with Automatic Mode Switching
Ultralow Dropout I
LED
Current Control
Output Current up to 700mA
Low Noise Constant Frequency Operation*
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
×
3mm 10-Lead DFN Package
APPLICATIONS
n
n
LED Torch/Camera Light Supply for Cell Phones,
PDAs and Digital Cameras
General Lighting and/or Flash/Strobe Applications
TYPICAL APPLICATION
C1
2.2µF
C2
2.2µF
Efficiency vs V
IN
100
90
EFFICIENCY (P
LED
/P
IN
) (%)
I
LED
= 200mA
C1
+
2.9V TO 4.4V
C
IN
2.2µF
V
IN
C1
C2
+
C2
CPO
LED1
I
LED
200mA
C
CPO
4.7µF
80
70
60
50
40
30
20
10
0
LED = AOT2015
V
F
= 3V TYP AT 200mA
2.8 3.0
3.2
LTC3215
I
LED
DISABLE ENABLE
EN
I
SET
20k
1%
3215 TA01a
LED1: AOT2015
3.4 3.6 3.8
V
IN
(V)
4.0
4.2
4.4
3215 TA01b
3215fc
1

LTC3215EDD#TRPBF Related Products

LTC3215EDD#TRPBF LTC3215EDD#PBF
Description LED Driver 1 Segment 9200uA Supply Current 10-Pin DFN EP T/R LED Driver 1 Segment 9200uA Supply Current 10-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(Typ) 9200(Typ)
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 10 10
Supplier Package DFN EP DFN EP
Mounting Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max)
Package Length 3 3
Package Width 3 3
PCB changed 10 10
Lead Shape No Lead No Lead
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