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| 型号： | MAX16816ATJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/33页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR HIGH BRIGHT 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | PWM，SEPIC，降压（降压），升压（升压） |
| 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： | 125kHz ~ 500kHz |
| 电源电压： | 5.5 V ~ 76 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
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ATION
EVALU
AVAILA
19-1054; Rev 0; 1/08
KIT
B LE
Programmable Switch-Mode LED Driver
with Analog-Controlled PWM Dimming
General Description
The MAX16816 is a current-mode, high-brightness LED
(HB LED) driver designed to control two external
n-channel MOSFETs for single-string LED current regu-
lation. The MAX16816 integrates all the building blocks
necessary to implement fixed-frequency HB LED dri-
vers with wide-range dimming control and EEPROM-
programmable LED current binning with a factor of up
to 1.6. This device is configurable to operate as a step-
down (buck), step-up (boost), or step-up/step-down
(buck-boost) current regulator.
Current-mode control with adjustable leading-edge
blanking simplifies control-loop design. Adjustable slope
compensation stabilizes the current loop when operating
at duty cycles above 50%. The MAX16816 operates over
a wide input voltage range and is capable of withstand-
ing automotive load-dump events. Multiple MAX16816
devices can be synchronized to each other or to an
external clock. The MAX16816 includes a floating
dimming driver for brightness control with an external
n-channel MOSFET in series with the LED string.
HB LEDs using the MAX16816 can achieve efficiencies
of over 90% in automotive applications. The MAX16816
Features
o EEPROM-Programmable LED Current Binning
o Wide Input Range: 5.9V to 76V with Cold Start
Operation to 5.4V
o Integrated Floating Differential LED Current-
Sense Amplifier
o Floating Dimming Driver Capable of Driving an
n-Channel MOSFET
o 5% or Better LED Current Accuracy
o Multiple Topologies: Buck, Boost, Buck-Boost,
SEPIC
o Resistor-Programmable Switching Frequency
(125kHz to 500kHz) and Synchronization
Capability
o 200Hz On-Board Ramp Allows Analog-Controlled
PWM Dimming and External PWM Dimming
o Output Overvoltage, Overcurrent, and LED Short
Protection
o Enable/Shutdown Input with Shutdown Current
Below 45 μ A
Ordering Information
also includes a 1.4A source and 2A sink gate driver for
driving switching MOSFETs in high-power LED driver
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
applications, such as front light assemblies. Dimming
control allows for wide PWM dimming range at frequen-
cies up to 5kHz. Higher dimming ratios (up to 1000:1)
MAX16816ATJ+ -40°C to +125°C
+Denotes a lead-free package.
32 TQFN-EP*
T3255M-4
are achievable at lower dimming frequencies.
The MAX16816 provides user-programmable features
through on-chip nonvolatile EEPROM registers.
Adjustable features include a programmable soft-start,
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
LED current (binning), external MOSFET gate driver sup-
ply voltage, slope compensation, leading-edge blanking
V IN
BUCK-BOOST CONFIGURATION
time, and disabling/enabling of the RT oscillator.
The MAX16816 is available in a 32-pin TQFN package
R UV2
C CLMP
R CS
with exposed pad and operates over the -40°C to
R UV1
V CC
LO
CLMP
CS-
CS+
DGT
+125°C automotive temperature range.
Applications
Automotive Exterior: Rear Combination Lights
(RCL), Daytime Running Lights (DRL), Fog and
Front Lighting, High-Beam/Low-Beam/Turn Lights
C REG1
C UVEN
DIM
R T
UVEN
DIM
REG1
RTSYNC
MAX16816
DRV
SNS+
SNS-
QGND
HI
R D
R SENSE
Q S
R OV1
LEDs
C F
General Illumination
FAULT
OV
Navigation and Marine Indicators
COMP
CS
FB
AGND
SGND
REG2
DRI
R OV2
Neon Replacement, Emergency Lighting
Signage and Beacons
R1
C1
C2
R2
C REG2
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16816EVKIT+ | 功能描述:LED 照明开发工具 MAX16816 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: |
| MAX16818ATI+ | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ATI+T | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ETI+ | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ETI+T | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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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