CXLE8190高效率升压型DC转换器WLED偏置电源驱动外部可编程恒流的白色LED单线接口32亮度级别38V功率MOSFET串联驱动多达10个白光led循环过电流保护

CXLE8190是一个升压型DC/DC转换器，设计用于驱动外部可编程恒流的白色LED。该器件采用集成的38V功率MOSFET，可串联驱动多达10个白光led，为均匀亮度提供固有电流匹配。WLED的亮度调整很容易通过一个单线接口实现，共有32个亮度等级的LED调光。
CXLE8190具有多种保护电路，包括集成过电压保护（OVP）、软启动、逐周限流和热关机保护电路。CXLE8190具有1A电流限制。
•高效率升压DC/DC WLED偏置电源
•内部38V，0.5Ω功率MOSFET
•每个字符串最多10个串行白色LED
•开关电流限制：1A
•LED的单线接口32亮度级别
调光
•可编程OVP电压
•软启动功能
•通过LED串从车辆识别号到接地无泄漏
•热关机
•循环过电流保护

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXLE8190 is a step-up DC/DC converter designed for driving the white LEDs with an externally programmable constant current. This device features integrated, 38V power MOSFET that is capable of driving up to 10 white LEDs in series, providing inherent current matching for uniform brightness. WLED brightness adjustment is easily achieved via a single wire interface, totally 32 brightness levels of LED Dimming.The CXLE8190 features a variety of protection circuits, including integrated over-voltage protection (OVP), soft-start, cycle-by-cycle current limiting, and thermal shutdown protection circuitry.The CXLE8190 has 1A current limit. It is available in Green TDFN-2×2-8L package. It operates over an ambient temperature range of -40℃to +85℃.

   产品特点 返回TOP

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• High-Efficiency Boost DC/DC WLED Bias Supply
• Internal 38V, 0.5Ω Power MOSFET
• Up to 10 Serial White LEDs per String
• Switch Current Limit: 1A
• Single Wire Interface 32 Brightness Levels for LED
   Dimming
• Programmable OVP Voltage
• Soft-Start Function
• No Leakage from V_IN to GND through LED String
• Thermal Shutdown
• Cycle-by-Cycle Over-Current Protection
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-2×2-8L Package

   应用范围 返回TOP

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TFT LCD Displays
Smart Phones
Portable Media Players
GPS/Personal Navigation Devices

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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白光LED驱动器
Product	LED Connection	CH	Iq(μA)	SHDN Iq(μA)	Dimming	Package
CXLE8196	Common Anode	1	60	1	PWM	SOT-23-6
CXLE8176	Common Anode	4	100	1	PWM	TQFN-3x3-16L
CXLE8177	Common Anode	3	100	1	PWM	TQFN-3x3-16L
CXLE8178	Common Anode	4	240	1	PWM	SOT-23-6
CXLE8179	Common Anode	4	100	1	One-Wire	TQFN-3x3-16L
CXLE8180	Common Anode	4	550	5	One-Wire	TQFN-3x3-16L TDFN-2x2-8L MSOP-8
CXLE8181	Common Cathode	4	300	10	One-Wire	TQFN-3x3-16L
CXLE8182	Common Anode	6	210	1	One-Wire	TQFN-3x3-16L
CXLE8183	Common Cathode	6	300	10	One-Wire	TQFN-4x4-16L
CXLE8184	Common Anode	6	155	2.5@VIN =4.2V	PWM	TQFN-3x3-16L
CXLE8185	Common Anode	8	155	2.5@VIN = 4.2V	PWM	TQFN-3x3-20L
CXLE8186	Common Anode	8	155	2.5@VIN =4.2V	One-Wire	TQFN-3x3-20L
CXLE8187	Common Anode	1	200	1	PWM	TSOT-23-6
CXLE8188	Common Anode	1	200	1	One-Wire	TSOT-23-6
CXLE8189	Common Anode	1	400	1	PWM	TDFN-2x2-6L TSOT-23-6
CXLE8190	Common Anode	1	45	1	One-Wire	TDFN-2x2-8L
CXLE8191	Common Anode	1	200	1	PWM	TSOT-23-6
CXLE8192	Common Anode	1	400	1	PWM	TDFN-2x2-6L TSOT-23-6
CXLE8193	Common Anode	1	200	1	One-Wire	TDFN-2x2-8L
CXLE8194	Common Anode	1	200	1	PWM	TDFN-2x2-8L
CXLE8195	Common Anode	1	220	1	PWM	TDFN-2x2-6L