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| 型号： | MAX16840EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR MAX16840 LED DVR |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 5 |
| 输出及类型： | 1，非隔离 |
| 特点： | 可调光 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16840 |
AVAILAB
MAX16840
EVALUATION KIT AVAILABLE
LE
LED Driver with Integrated MOSFET
for MR16 and Other 12V AC Input Lamps
General Description
The MAX16840 is an LED driver IC for lighting applica-
tions. It includes all the necessary features to design
low-component-count LED drivers for 12V AC and 24V
AC input (e.g., MR16) light bulbs. A proprietary input-
current control scheme allows LED lamps based on this
device to be compatible with electronic transformers,
and dimmable with standard trailing-edge dimmers
(where electronic transformers are present).
The IC can be used in buck, boost, and buck-boost
topologies and features. It has an integrated 0.2 I (max),
48V switching MOSFET.
The IC uses constant-frequency average current-mode
control. It senses the input current through the voltage
at the FB pin, and regulates its average. An input pin
(REFI) allows the setting of the input-current level. When
the voltage at this pin is set below a certain threshold, the
input current is proportional to this voltage, while when
that voltage is beyond the threshold, the input current is
set at a fixed, predefined level. This nonlinear behavior
of REFI allows its use to achieve thermal foldback, by
connecting it to an NTC resistor.
The IC also features an internal overvoltage protection on
the IN pin to protect the internal switching MOSFET from
damage if the LED string is open or if the voltage on the
LED string is too high.
Features
S Control of the Average Input Current to Achieve
Operation with Electronic Transformers and
Dimmability
S Buck, Boost, SEPIC, and Buck-Boost Topologies
S Integrated 0.2 I (max) 48V Switching MOSFET
S Analog Dimming and Thermal Foldback
S Output Overvoltage Protection
S Internal Overtemperature Protection
S -40°C to +125°C Operating Temperature Range
S 3mm x 3mm, 10-Pin TDFN Package
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX16840ATB+ -40 N C to +125 N C 10 TDFN-EP*
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Typical Operating Circuit
LED-
The IC has a separate EXT pin that can be used to guar-
L2
D1
C2
LED+
antee that there is a Functional Diagrams
kick-start of current at turn-on for
low-input voltages for proper operation with electronic
transformers. EXT drives an external npn transistor.
L1
BD1
R3
REFI
DRAIN
IN
Once the UVLO threshold of 5.5V is crossed on IN, EXT
is pulled to ground and the external npn transistor is
turned off.
The IC is available in a 3mm x 3mm, 10-pin TDFN power
package, and is rated over the -40 N C to +125 N C operat-
12V AC
C1
C4
R2
EXT
COMP
MAX16840
SOURCE
FB
GND
R1
ing temperature range.
Applications
MR16 and Other 12V AC or DC Input LED
Lighting Applications
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-5671; Rev 3; 8/11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16840EVKIT# | 功能描述:LED 照明开发工具 MAX16840 Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX16840EVKIT+ | 功能描述:LED 照明开发工具 MAX16840 Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX16841ASA+ | 功能描述:LED照明驱动器 Wide Input Offline w/Dimming RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX16841ASA+T | 功能描述:LED照明驱动器 Wide Input Offline w/Dimming RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX16841BEVKIT# | 功能描述:LED 照明开发工具 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
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