CXLE8851是一个180kHz的固定频率脉冲宽度调制降压（降压）DC/DC转换器，能够以高效率、低纹波和良好的线路和负载调节驱动2.5A负载。该调节器需要最少数量的外部元件，使用简单，包括内部频率补偿和固定频率振荡器。
该PWM控制电路能够将占空比从0%线性调整到100%。内置过流保护功能。当发生短路保护时，工作频率由180KHz降低到48KHz。内置一个内部补偿块以最小化外部组件计数。
n宽8V至36V输入电压范围
n输出可从1.25伏调整到32伏
n最大占空比100%
n最小压降0.3V
n固定180KHz开关频率
n最大3A开关电流
n内部优化功率MOSFET
n高效率
n优良的线路和负载调节
n带输出恒流回路
n内置热关机功能
n内置电流限制函数
n内置输出短路保护功能
[ CXLE8851 ]
产品技术资料帮助
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产品概述 返回TOP
产品特点 返回TOP
n Wide 8V to 36V Input Voltage Range
n Output Adjustable from 1.25V to 32V
n Maximum Duty Cycle 100%
n Minimum Drop Out 0.3V
n Fixed 180KHz Switching Frequency
n Maximum 3A Switching Current
n Internal Optimize Power MOSFET
n High efficiency
n Excellent line and load regulation
n With output constant current loop
n Built in thermal shutdown function
n Built in current limit function
n Built in output short protection function
n Available in SOP8L package
应用范围 返回TOP
n Car Charger
n Battery Charger
n LCD Monitor and LCD TV
n Portable instrument power supply
n Telecom / Networking Equipment
技术规格书（产品PDF) 返回TOP
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
产品封装图 返回TOP
电路原理图 返回TOP
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降压型LED射灯驱动IC |
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型号 |
工作电压范围 |
输出电流 |
输出电 流精度 |
线性调 整率 |
工作频率 |
调光功能 |
封装 |
|
|
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
ESOP8 |
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6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
SOT-26 |
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|
6V-60V |
1.2A |
2% |
94% |
1.1MHz |
PWM/模拟 调光 |
SOT-89-5 |
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|
2V-6.5V |
0.95A |
10% |
0.45% |
92% |
1.4 MHz |
SOT-25 |
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|
2.5V-5.5V |
0.7A |
3% |
93% |
1.4MHz |
SOT-25 |
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|
5.5V-36V |
扩流2.5A |
1% |
96% |
1MHz |
SOT-26 |
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|
4V--28V |
扩流25W |
1% |
96% |
2MHz |
PWM/模拟 调光 |
SOT-26 |
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|
2.5V-100V |
扩流2.5A |
1% |
90% |
1MHz |
SOT-26 |
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|
5-100V |
1.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
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5-100V |
2.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
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6V-100V |
扩流3A |
3% |
95% |
200KHz |
SOT-26 |
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8V-45V |
3A |
3% |
95% |
220KHz |
ESOP8 |
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8V-40V |
4A |
3% |
95% |
220KHz |
TO252-5L |
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8V-40V |
5A |
3% |
95% |
220KHz |
TO263-5L |
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5V-36V |
1.5A |
2% |
96% |
380KHz |
SOP-8 |
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4.5V-45V |
2A |
2% |
83% |
150KHz |
ESOP8 |
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8V-45V |
3A |
2% |
89% |
150KHz |
ESOP8 |
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|
8V-40V |
3A |
2% |
89% |
180KHz |
SOP8 |
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|
8V-40V |
3.5A |
2% |
87% |
180KHz |
ESOP8 |
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8V-40V |
2A |
2% |
89% |
110KHz |
SOP8 |
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7V-40V |
2.5A |
2% |
89% |
250KHz |
ESOP8 |
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8V-40V |
5A |
2% |
86% |
150KHz |
TO263-5L |
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6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
SOT89-5 |
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6V-34V |
1.0A |
5% |
1.50% |
97% |
1MHz(max) |
PWM/模拟 调光 |
SOT89-5 |
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◀ 上一篇:CXLE8850 150KHz的固定频率脉冲宽度调制降压DC变换器驱动2.5A的负载高效率低纹波和良好的线路和负载调节PWM控制电路能够将占空比从0%线性调整到100%
下一篇▶:CXLE8852固定频率脉冲宽度调制降压DC转换器驱动3.5A的负载内部优化功率MOSFET带输出恒流回路PWM控制电路能够将占空比从0%线性调整到100%内部频率补偿和固定频率振荡器
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