CXLE8297是一款低噪声、恒定频率（1.20MHz）开关电容升压器。它产生一个2.8V稳压输出电压为4.5V的输入与输出电流高达250mA的。低外部元件数（一个浮动电容器和两个小型旁路电容在VIN和VOUT）使CXLE8297非常适合于小型，电池供电的应用。全新的电荷泵架构保持恒定的开关频率无负载，并降低输出和输入纹波。该CXLE8297有热关机功能和连续短路才能生存从VOUT到GND.内置软启动电路，防止过大浪涌电流在启动过程中
*固定5V±4%输出
*VIN范围：2.8V至5V
*输出电流：高达250mA
*低噪声恒定频率操作
*关断电流<1μA
*短路保护
*软启动
*无需电感
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[ CXLE8297 ]"
目录
产品概述 返回TOP
The CXLE8297 is a low noise, constant frequency (1.20MHz) switched capacitor voltage doubler. It produces a regulated output voltage from 2 .8V to 5V input with up to 250mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT)make the CXLE8297 ideally suited for small, battery-powered applications.The new charge-pump architecture maintains constant switching frequency to no load and reduces both output and input ripple. The CXLE8297 have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up.The CXLE8297 is available in the 6-pin SOT-23 package.
CXLE8297是一款低噪声、恒定频率（1.20MHz）开关电容升压器。它产生一个2.8V稳压输出电压为4.5V的输入与输出电流高达250mA的。低外部元件数（一个浮动电容器和两个小型旁路电容在VIN和VOUT）使CXLE8297非常适合于小型，电池供电的应用。全新的电荷泵架构保持恒定的开关频率无负载，并降低输出和输入纹波。该CXLE8297有热关机功能和连续短路才能生存从VOUT到GND.内置软启动电路，防止过大浪涌电流在启动过程中。CXLE8297可在6引脚SOT23封装。
产品特点 返回TOP
Fixed 5V±3% Output
VIN Range: 2.8V~5V
Output Current: up to 250mA (VIN=4.5V)
Low Noise Constant Frequency Operation
Shutdown Current:<1μA
Short-Circuit Protection
Soft-start
No Inductors
Available in Low Profile 6-Lead SOT-23Package
*固定5V±4%输出
*VIN范围：2.8V至5V
*输出电流：高达250mA
*低噪声恒定频率操作
*关断电流<1μA
*短路保护
*软启动
*无需电感
应用范围 返回TOP
White LED Backlighting
Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
*白光LED背光
*锂离子电池备用电源
*本地3V到5V转换
*智能卡读卡器
*PCMCIA自给5V电源
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 |
输入电压 |
最大输出电流 |
高效率 |
最大工作频率 |
封装 |
|
12V-85V |
850MA |
92% |
1MHz |
ESOP-8/PP |
|
|
0.8~5.5V |
0.3W-7W |
90% |
1MHz |
SOT-23-6L |
|
|
3~24V |
90% |
1.20MHz |
SOT23-6 |
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|
2.6V~7.0V |
100mA |
90% |
1.20MHz |
SOP8 |
|
|
6V~40V， |
1A |
97.50% |
1MH |
SOT89-5 |
|
|
2.5V ~5V |
1-5W |
92% |
SOT23-6 |
||
|
2.5V ~ 6V |
1A |
90% |
SOT23-6 |
||
|
7.2V~19V |
20W |
90% |
SOT23-6 |
||
|
1.8－3.6V |
3W |
90% |
1MHZ |
SOT23-6 |
|
|
6-40V |
1A |
97% |
1MHz |
SOT89-5 |
|
|
2.7-6V |
3.0Ａ |
97% |
1MHz |
SOT-89-5 |
|
|
8V~600V |
1A |
90% |
1MHz |
SOP8 |
|
|
8V~32V |
1A |
97% |
1MHz |
SOT89-5L |
|
|
2.7V~4.8V |
1W,3W |
97% |
全亮，25%亮度，暴闪 |
SOT23-6 |
|
|
2.8V~5V |
250mA |
97% |
1.20MHz |
SOT23 |
|
|
2.5V~24V |
10MA~1安 |
90% |
2.5MHz |
SOT23-6 |
|
|
7.2V~19V |
20W |
97% |
1MHz |
SOT23-6 |
|
|
2.7V~4.8V |
1W,3W |
90% |
1MHz |
SOT23-6 |
|
|
ON/OFF模式3段调光模式无级调光模式 |
SOP-8/SOT23-6 |
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