CXLE8849是一个150KHz的固定频率脉冲宽度调制降压（降压）DC/DC转换器，能够驱动2A负载，具有高效率、低纹波和良好的线路和负载调节。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。
宽4.5V至40V输入电压范围
输出可从1.235V调整到37V
最小压降1.5V
固定150kHz开关频率
·2A恒定输出电流能力
·内部优化功率晶体管
出色的线路和负载调节
TTL关闭能力
·带滞后功能的开/关引脚
输出恒流回路
内置热关机功能
内置电流限制功能
内置输出过压保护
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[ CXLE8849 ]
目录
产品概述 返回TOP
The CXLE8849 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A 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
Wide 4.5V to 40V Input Voltage Range
„ Output Adjustable from 1.235V to 37V
„ Minimum Drop Out 1.5V
„ Fixed 150kHz Switching Frequency
„ 2A Constant Output Current Capability
„ Internal Optimize Power Transistor
„ Excellent line and load regulation
„ TTL shutdown capability
„ ON/OFF pin with hysteresis function
„ With output constant current loop
„ Built in thermal shutdown function
„ Built in current limit function
„ Built in output over voltage protection
„ SOP8-EP (Exposed PAD) package
应用范围 返回TOP
„ Car Charger
„ Battery Charger
„ LED Constant Current Driver
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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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 |
|
|
CXLE8835ES |
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
ESOP8 |
|
|
CXLE8835MR |
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
SOT-26 |
|
|
6V-60V |
1.2A |
2% |
94% |
1.1MHz |
PWM/模拟 调光 |
SOT-89-5 |
||
|
2V-6.5V |
0.95A |
10% |
0.45% |
92% |
1.4 MHz |
SOT-25 |
||
|
2.5V-5.5V |
0.7A |
3% |
93% |
1.4MHz |
SOT-25 |
|||
|
5.5V-36V |
扩流2.5A |
1% |
96% |
1MHz |
SOT-26 |
|||
|
4V--28V |
扩流25W |
1% |
96% |
2MHz |
PWM/模拟 调光 |
SOT-26 |
||
|
2.5V-100V |
扩流2.5A |
1% |
90% |
1MHz |
SOT-26 |
|||
|
5-100V |
1.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
||
|
5-100V |
2.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
||
|
6V-100V |
扩流3A |
3% |
95% |
200KHz |
SOT-26 |
|||
|
8V-45V |
3A |
3% |
95% |
220KHz |
ESOP8 |
|||
|
8V-40V |
4A |
3% |
95% |
220KHz |
TO252-5L |
|||
|
8V-40V |
5A |
3% |
95% |
220KHz |
TO263-5L |
|||
|
5V-36V |
1.5A |
2% |
96% |
380KHz |
SOP-8 |
|||
|
4.5V-45V |
2A |
2% |
83% |
150KHz |
ESOP8 |
|||
|
8V-45V |
3A |
2% |
89% |
150KHz |
ESOP8 |
|||
|
8V-40V |
3A |
2% |
89% |
180KHz |
SOP8 |
|||
|
8V-40V |
3.5A |
2% |
87% |
180KHz |
ESOP8 |
|||
|
8V-40V |
2A |
2% |
89% |
110KHz |
SOP8 |
|||
|
7V-40V |
2.5A |
2% |
89% |
250KHz |
ESOP8 |
|||
|
8V-40V |
5A |
2% |
86% |
150KHz |
TO263-5L |
|||
|
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
SOT89-5 |
||
|
6V-34V |
1.0A |
5% |
1.50% |
97% |
1MHz(max) |
PWM/模拟 调光 |
SOT89-5 |
|
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下一篇▶: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%
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