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MAX20056BAUGA/V+

更新时间： 2024-09-29 21:10:55
品牌 Logo 应用领域
美信 - MAXIM 驱动接口集成电路
页数 文件大小 规格书
26页 1378K
描述
LED Driver,

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中文翻译

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MAX20056BAUGA/V+ 技术参数

生命周期：Active包装说明：,
Reach Compliance Code：unknownFactory Lead Time：6 weeks
风险等级：1.48接口集成电路类型：LED DISPLAY DRIVER
Base Number Matches：1

MAX20056BAUGA/V+ 数据手册

 浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第2页浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第3页浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第4页浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第5页浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第6页浏览型号MAX20056BAUGA/V+的Datasheet PDF文件第7页 
EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX20056B  
Integrated, 6-Channel High-Brightness LED Driver  
with Very Wide PWM Dimming Ratio and Phase  
Shifting for Automotive Displays  
General Description  
Benefits and Features  
● Robust with Respect to EMC and Automotive Battery  
The MAX20056B is a 6-channel LED driver that  
integrates a DC-DC switching boost/SEPIC controller and  
six 120mAcurrent sinks. Acurrent-mode switching DC-DC  
controller provides the necessary voltage to the strings of  
HB LEDs.  
Transients  
• Wide 4.5V to 42V Input Operating Range Powers  
HB LEDs for Medium-to-Large-Sized LCD Displays  
in Automotive and Display Backlight Applications  
• Withstands Automotive Load-Dump Events Up to 52V  
• Integrated Spread Spectrum  
An internal current-mode switching DC-DC controller  
supports boost, SEPIC, or coupled-inductor buck-boost  
topologies and operates in a programmable frequency  
range between 400kHz and 2.2MHz. Current-mode control  
provides fast response and simplifies loop compensation.  
An adaptive output-voltage-adjustment scheme minimizes  
power dissipation in the LED current sinks.  
● Spread-Spectrum Mode Reduces Emission at the  
Switching Frequency and its Harmonics  
• EMI Reduction Features Include Spread-Spectrum  
Modulation (±6% of the Switching Frequency Set  
by a Resistor Connected Between RT and SGND)  
● Phase-Shift Dimming of LED Strings  
An external resistor sets the channel currents to the  
same value in the range of 20mA to 120mA. The  
device features logic-controlled pulse-width modulation  
(PWM) dimming with minimum pulse widths as low as  
500ns, and either phase-shifted LED strings or standard  
dimming control. When phase shifting is enabled, each  
string is turned on at a different time, reducing the input  
and output ripple as well as audible noise. With phase  
shifting disabled, each current sink is turned on at the  
same time and allows parallel connection of current sinks  
for > 120mA per string.  
• Reduced Input and Output Ripple/Audible Noise  
● Wide Contrast Ratio Ideal for High-Quality TFT and  
Head-Up Displays  
• PWM Dimming Ratio of 10,000:1 at 200Hz  
● Robust with Respect to Temperature and Fault  
Conditions  
• LED-Open/Short Detection  
• Overtemperature Protection  
• Low Shutdown Current (< 15μA) through Enable Pin  
• Thermally Enhanced 24-Pin TSSOP Package  
• -40°C to +125°C AEC-Q100 compliance  
Applications  
● Automotive Dashboards  
● Automotive Central Information Displays  
● Automotive Head-Up Displays  
● Automotive Navigation Systems  
Ordering Information appears at end of data sheet.  
Simplified Schematic  
D1  
L1  
VIN  
COUT  
R1  
CIN  
N1  
NDRV  
CS  
IN  
RG  
ENABLE  
EN  
RSC  
PWM DIM  
FAULT  
DIM  
RCS  
R2  
FLT  
MAX20056B  
PSEN  
VCC  
OVP  
OUT1  
R3  
R4  
C1  
RSDT  
OUT2  
OUT3  
OUT4  
OUT5  
OUT6  
ISET  
COMP  
RT  
RCOMP  
CCOMP  
RISET  
SGND  
PGND  
LEDGND  
RRT  
CX  
19-100423; Rev 4; 9/19  
1234567...26

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