Datasheet Linear Technology LTC3207 — 数据表

制造商	Linear Technology
系列	LTC3207

600mA通用多输出LED / CAM驱动器

数据表

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PDF, 249 Kb, 修订版: C, 文件上传: Sep 27, 2017

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价格

打包

	LTC3207EUF#PBF	LTC3207EUF#TRPBF	LTC3207EUF-1#PBF	LTC3207EUF-1#TRPBF
N	1	2	3	4
Package	4x4 QFN-24 包装外形图	4x4 QFN-24 包装外形图	4x4 QFN-24 包装外形图	4x4 QFN-24 包装外形图
Package Code	UF	UF	UF	UF
Package Index	05-08-1697	05-08-1697	05-08-1697	05-08-1697
Pin Count	24	24	24	24

参数化

Parameters / Models	LTC3207EUF#PBF	LTC3207EUF#TRPBF	LTC3207EUF-1#PBF	LTC3207EUF-1#TRPBF
Demo Boards	DC1039A-A,DC1039A-B	DC1039A-A,DC1039A-B	DC1039A-A,DC1039A-B	DC1039A-A,DC1039A-B
Export Control	no	no	no	no
Features	I2C Control	I2C Control	I2C Control	I2C Control
Frequency, kHz	850	850	850	850
Ishutdown, µA	1	1	1	1
Isupply, mA	.5	.5	.5	.5
Max Number of LEDs	12 + 1 LED/CAM	12 + 1 LED/CAM	12 + 1 LED/CAM	12 + 1 LED/CAM
Monolithic	yes	yes	yes	yes
Number of Outputs	13	13	13	13
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Output Current, A	0.6	0.6	0.6	0.6
Synchronous	no	no	no	no
Topology	Charge Pump, LED Driver	Charge Pump, LED Driver	Charge Pump, LED Driver	Charge Pump, LED Driver
Vin Max, V	5.5	5.5	5.5	5.5
Vin Min, V	2.9	2.9	2.9	2.9
Vout Max, V	4.5	4.5	4.5	4.5

生态计划

	LTC3207EUF#PBF	LTC3207EUF#TRPBF	LTC3207EUF-1#PBF	LTC3207EUF-1#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

应用须知

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LTC3207/LTC3207-1 Users Guide &mdash AN108
PDF, 88 Kb, 档案已发布: Jul 6, 2007
The LTC3207/LTC3207-1 is a 600mA LED/Camera driver which illuminates 12 Universal LEDs (ULEDs) and one camera flash LED. The (ULEDs) are considered universal because they may be individually turned on or off, set in general purpose output (GPO) mode, set to blink at a selected on-time and period, or gradate on and off at a selected gradation rate. This device also has an external enable (ENU) pin that may be used to blink, gradate, or turn on/off the LEDs without using the I2C bus. This may be useful if the microprocessor is in sleep or standby mode. If used properly, these features may save valuable memory space, programming time, and reduce the I2C traffic.
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Application Note 108
July 2007
LTC3207/LTC3207-1 UserвЂ™s Guide
by Marty Merchant
INTRODUCTION
The LTCВ®3207/LTC3207-1 is a 600mA LED/Camera driver
which illuminates 12 Universal LEDs (ULEDs) and one
camera п¬‚ash LED. The ULEDs are considered universal
because they may be individually turned on or off, set
in general purpose output (GPO) mode, set to blink at a
selected on-time and period, or gradate on and off at a
selected gradation rate. This device also has an external
enable (ENU) pin that may be used to blink, gradate, or
turn on/off the LEDs without using the I2C bus. This may be
useful if the microprocessor is in sleep or standby mode. If
used properly, these features may save valuable memory
space, programming time, and reduce the I2C trafп¬Ѓc.
I2C Control
The LTC3207/LTC3207-1 has 16 data registers, each
with its own sub-address as shown in Table 2. The data
is loaded into the registers when the device receives a
Stop bit. This device is written using the standard I2C
protocol. A 7-bit slave address and write bit is followed …

文章

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Universal 12-Output LED Driver Controls 4-RGB LEDs &mdash LT Journal
PDF, 99 Kb, 档案已发布: Jun 14, 2007
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DESIGN IDEASвЂ‰L Universal 12-Output LED Driver
By Ted Henderson
Controls 4-RGB LEDs
Introduction
RGB LEDs produce a wide range
of colors, including white, making
them highly versatile. Each RGB LED
requires three drivers, one for each
color LED. Using a multiple output
LED driver for RGB applications can
save solution size and cost versus
single LED drivers. The LTC3207 and
LTC3207-1 each provide 12 individually programmable current sources
(universal drivers). This allows them
to drive up to 12 white LEDs or four
RGB LEDs, as shown in FigureВ 1. Each
universal LED driver is controlled
by a dedicated 6-bit linear DAC that
covers an LED output current range
of 400ВµA to 28mA. Any unused universal or camera outputs can simply
be connected to ground and left unprogrammed by the I2C port.
The LTC3207 and LTC3207-1 include all of the functions required to
drive 12 LEDs and one camera LED, …

模型线

系列: LTC3207 (4)

LTC3207EUF#PBF LTC3207EUF#TRPBF LTC3207EUF-1#PBF LTC3207EUF-1#TRPBF

制造商分类

Power Management > Inductorless (Charge Pump) DC/DC Converters > Inductorless (Charge Pump) LED Drivers