Datasheet > MAX16840

MAX16840

更新时间： 2024-11-11 11:18:23

品牌	Logo	应用领域
美信 - MAXIM		驱动器
页数	文件大小	规格书
1页	754K
描述
LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MAX16840 数据手册

19-5671; Rev 1; 2/11

LED Driver with Integrated MOSFET

for MR16 and Other 12V AC Input Lamps

General Description

Features

S Control of the Average Input Current to Achieve

Operation with Electronic Transformers and

Dimmability

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).

S Buck, Boost, SEPIC, and Buck-Boost Topologies

S Integrated 0.2I (max) 48V Switching MOSFET

S Analog Dimming and Thermal Foldback

S Output Overvoltage Protection

The IC can be used in buck, boost, and buck-boost

topologies and features. It has an integrated 0.2I (max),

48V switching MOSFET.

S Internal Overtemperature Protection

S -40°C to +125°C Operating Temperature Range

S 3mm x 3mm, 10-Pin TDFN Package

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.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX16840ATB+

-40NC to +125NC

10 TDFN-EP*

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

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.

Typical Operating Circuit

LED-

LED+

The IC has a separate EXT pin that can be used to guar-

antee that there is a kick-start of current at turn-on for

low-input voltages for proper operation with electronic

transformers. EXT drives an external npn transistor.

Once the UVLO threshold of 5.5V is crossed on IN, EXT

is pulled to ground and the external npn transistor is

turned off.

DRAIN

12V AC

BD1

REFI

EXT

MAX16840

COMP

SOURCE

GND

The IC is available in a 3mm x 3mm, 10-pin TDFN power

package, and is rated over the -40NC to +125NC operat-

ing temperature range.

Applications

MR16 and Other 12V AC or DC Input LED

Lighting Applications

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

中文翻译

下载PDF

与MAX16840相关器件

型号	品牌	获取价格	描述	数据表
MAX16840_1108	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB+	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB+T	MAXIM	获取价格	LED Driver,
MAX16840ATE+	MAXIM	获取价格	LED Driver
MAX16841	MAXIM	获取价格	Controller IC for Dimmable Offline LED Lamps
MAX16841_13	MAXIM	获取价格	Controller IC for Dimmable Offline LED Lamps
MAX16841ASA+	MAXIM	获取价格	LED Driver, 1-Segment, BICMOS, PDSO8, ROHS COMPLIANT, SOP-8
MAX1684EEE	MAXIM	获取价格	Low-Noise, 14V Input, 1A, PWM Step-Down Converters
MAX1684EEE+	MAXIM	获取价格	Switching Regulator, Current-mode, 2.3A, 340kHz Switching Freq-Max, BICMOS, PDSO16, 0.150

与MAX16840相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX16840

MAX16840 数据手册

与MAX16840相关器件

与MAX16840相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX16840

MAX16840 数据手册

与MAX16840相关器件

与MAX16840相关文章

您还可以找

您在本页遇到什么问题？