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参数资料
| 型号： | LTC3496EUFD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2300 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封装： | 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-28 |
| 文件页数： | 1/16页 |
| 文件大小： | 296K |
| 代理商： | LTC3496EUFD#TRPBF |
LT3496
1
3496f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Triple Output LED Driver
The LT
3496 is a triple output DC/DC converter designed
to operate as a constant-current source and is ideal for
driving LEDs. The LT3496 works in buck, boost or buck-
boost mode. The LT3496 uses a xed frequency, current
mode architecture resulting in stable operation over a
wide range of supply and output voltages. A frequency
adjust pin allows the user to program switching frequency
between 330kHz and 2.1MHz to optimize efciency and
external component size.
The LT3496 supports 3000:1 dimming control on each
channel. Each of the three regulators is independently
operated by that channel’s PWM signal. The PWM feature
allows precise adjustment of the color mixing or dimming
ratio of the LED source. Each of the three channels has
a built-in gate driver to drive an external LED-disconnect
P-channel MOSFET, allowing high dimming range. The
output current range of each channel of the LT3496 is
programmed with an external sense resistor.
The CTRL pin is used to adjust the LED current either for
analog dimming or overtemperature protection.
■ True Color PWM
TM Dimming Delivers Up to 3000:1
Dimming Ratio
■ Built-In Gate Driver for PMOS LED Disconnect
■ Three Independent Driver Channels with 750mA,
45V Internal Switches
■ Operates in Buck, Boost, Buck-Boost Modes
■ CTRL Pin Accurately Sets LED Current Sense
Threshold Over a Range of 10mV to 100mV
■ Adjustable Frequency: 330kHz to 2.1MHz
■ Open LED Protection
■ Wide Input Voltage Range:
Operation from 3V to 30V
Transient Protection to 40V
■ Surface Mount Components
■ 28-Lead (4mm
× 5mm) QFN Package
■ RGB Lighting
■ Billboards and Large Displays
■ Automotive and Avionic Lighting
■ Constant-Current Sources
High Dimming Ratio Triple Output LED Power Supply
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Patent Pending.
3000:1 PWM Dimming at 120Hz
0.5A
0.47
F
0.47
F
LED1
200m
200m
TG1
PVIN
42V
7 LEDs
10
H
CAP1
0.5A
LED2
TG2
10
H
CAP2
0.5A
0.47
F
LED3
1
F
×3
200m
0.1
F
3496 TA01a
TG3
10
H
CAP3
SW1
SW2
LT3496
GND
SW3
TG1-3
VC1-3
VREF
CTRL1-3
FADJ
OVP1-3
CAP1-3
LED1-3
VIN
PWM1-3
SHDN
PWM1-3
SHDN
VIN
3V TO 24V
1
F
PWM
5V/DIV
0.5
s/DIV
3496 TA01b
ILED
0.5A/DIV
IL
0.5A/DIV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3499 | 制造商:LINER 制造商全称:Linear Technology 功能描述:750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection |
| LTC3499B | 制造商:LINER 制造商全称:Linear Technology 功能描述:750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection |
| LTC3499BEDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection |
| LTC3499BEDD#PBF | 功能描述:IC REG BOOST SYNC ADJ 0.75A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3499BEDD#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.8V to 5.5V 8-Pin DFN EP T/R |
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