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| 型号： | MAX16822AASA/V+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER HIGH BRIGHT 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 2MHz |
| 电源电压： | 6.5 V ~ 65 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
ATION
ILABLE
19-4141; Rev 3; 1/10
KIT
EVALU
AVA
2MHz, High-Brightness LED Drivers with
Integrated MOSFET and High-Side Current Sense
General Description
The MAX16822A/MAX16822B step-down constant-cur-
rent high-brightness LED (HB LED) drivers provide a
cost-effective design solution for automotive
interior/exterior lighting, architectural and ambient light-
ing, LED bulbs, and other LED illumination applications.
The MAX16822A/MAX16822B operate from a +6.5V to
+65V input-voltage range and can provide an output
current up to 350mA, if operated up to a temperature of
+125°C, or up to 500mA, if operated up to a tempera-
ture of +105°C. A high-side current-sense resistor
adjusts the output current and a dedicated pulse-width
modulation (PWM) input enables pulsed LED dimming
over a wide range of brightness levels.
These devices are well suited for applications requiring
a wide input-voltage range. The high-side current sens-
ing and an integrated current-setting circuitry minimize
the number of external components while delivering an
average output current with ±3% accuracy. A hysteretic
control method ensures excellent input supply rejection
and fast response during load transients and PWM dim-
ming. The MAX16822A allows 10% current ripple and
the MAX16822B allows 30% current ripple. Both
Features
? High-Efficiency Solution
? 6.5V to 65V Input-Voltage Range
? Output Current Up to 500mA
? On-Board 65V, 0.85 Ω Power MOSFET
? Hysteretic Control: Up to 2MHz Switching
Frequency
? ±3% LED Current Accuracy
? 200mV Current-Sense Reference
? Resistor-Programmable Constant LED Current
? Integrated High-Side Current Sense
? Thermal-Foldback Protection/Linear Dimming
? Thermal-Shutdown Protection
? Available in an 8-Pin SO Package
? -40°C to +125°C Operating Temperature Range
Ordering Information
devices operate up to a switching frequency of 2MHz,
thus allowing the use of small-sized components.
The MAX16822A/MAX16822B offer an analog dimming
PART
MAX16822A ASA+
MAX16822AASA/V+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
8 SO
8 SO
feature that reduces the output current by applying an
external DC voltage below the internal 2V threshold volt-
age from TEMP_I to GND. TEMP_I also sources 25μA to
a negative temperature coefficient (NTC) thermistor con-
nected between TEMP_I and GND, thus providing an
analog thermal-foldback feature that reduces the LED
current when the temperature of the LED string exceeds
a specified temperature point.
An additional feature includes thermal-shutdown pro-
MAX16822B ASA+ -40°C to +125°C 8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Typical Application Circuit
D1
tection that turns off the LX driver when the junction
temperature exceeds +165°C.
V IN
R SENSE
HB LEDs
L1
The MAX16822A/MAX16822B operate over the -40°C to
+125°C automotive temperature range and are available
in an 8-pin SO package.
Applications
C2
Architectural, Industrial, and Ambient Lighting
Automotive RCL, DRL, and Fog Lights
Heads-Up Displays
Indicator and Emergency Lighting
C1
1
2
3
CS
IN
GND
TEMP_I
DIM
MAX16822A
MAX16822B
LX
8
7
6
NTC*
ON
OFF
4
PGND
LX
5
Pin Configuration appears at end of data sheet.
*OPTIONAL
________________________________________________________________ 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.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16822BASA+ | 功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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 |
| MAX16822BASA+T | 功能描述:LED照明驱动器 2MHz HB w/MOSFET & HSide Crnt Sense 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 |
| MAX16822BEVKIT+ | 功能描述:LED 照明开发工具 MAX16822B 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: |
| MAX16823ATE/V+ | 功能描述:LED照明驱动器 3Ch Linear HB w/Open LED Detection 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 |
| MAX16823ATE/V+T | 功能描述:LED照明驱动器 3Ch Linear HB w/Open LED Detection 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 |
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