CXLE8848是一个380kHz的固定频率脉冲宽度调制降压（降压）DC/DC转换器，能够驱动1.5A的负载，具有高效率、低纹波和良好的线和负载调节。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%。一个使能功能，一个过电流保护功能内置。内置一个内部补偿块以最小化外部组件计数
n宽5V至32V输入电压范围
n输出电流检测电压为0.24V
n最小压降0.3V
n固定380KHz开关频率
n 1.5A恒定输出电流能力
n内部优化功率MOSFET
n优良的线路和负载调节
n效率高达96%
n TTL关闭能力
具有滞后功能的n-EN引脚
n内置热关机功能
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[ CXLE8848 ]"
目录
产品概述 返回TOP
The CXLE8848 is a 380 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 1.5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count.
产品特点 返回TOP
n Wide 5V to 32V Input Voltage Range
n Output Current Sense Voltage is 0.24V
n Minimum Drop Out 0.3V
n Fixed 380KHz Switching Frequency
n 1.5A Constant Output Current Capability
n Internal Optimize Power MOSFET
n Excellent line and load regulation
n High efficiency up to 96%
n TTL shutdown capability
n EN pin with hysteresis function
n Built in thermal shutdown function
n Built in current limit function n SOIC-8 package
应用范围 返回TOP
n MR16 LED Lamp
n LED Lighting
技术规格书（产品PDF) 返回TOP
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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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