Cxsu6399 is a current mode controlled synchronous step-down converter with fixed operating frequency and built-in PFM function. When the chip is light loaded, it enters the PFM working mode. At this time, the working current is only 20ua, while when it is turned off, it only consumes 1uA. This device is an ideal solution for the application of lithium battery power supply system and small size circuit board. This device has a built-in switch, so it does not need external continuous current diode. In addition, it has a frequency of 1.5MHz, which can make the layout area of the external PCB very small.
The cxsu6399 has 4 output versions: 1.2V, 1.8V, 3.3V and adjustable output. Among them, the output adjustable products have a wide range of voltage output capability from 0.6 to VIN. The package of this product is a very small sot23-5l
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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）
一.产品概述
CXSU6399是一款具有固定工作频率并且内置PFM功能的电流模式控制的的同步降压转换芯片。该芯片轻载时候进入PFM工作模式，此时工作电流只有20uA，而当它关机时只消耗1uA。这个器件对于锂电池供电系统和小尺寸电路板的应用来说是理想的解决方案。这个器件具有内置的开关，因此不需要外部的续流二极管，另外还具有1.5MHZ的频率可以使外部的pcb的布局面积很小。
CXSU6399具有1.2V，1.8V，3.3V和输出可调等4种输出版本的产品。其中输出可调的产品具有从0.6到Vin的宽范围电压输出能力。这个产品的封装是很小的SOT23-5L.
二.产品特点
● 600mA的输出能力
● 130uA的静态电流
● 高达96%的效率
● 2.5V 到 5.5V 的输入范围
● 0.6V到Vin的可调输出范围
● 无需外部肖特基二极管
● 1.5MHz 固定工作频率
● 电流模式控制
● 工作温度：-40℃～85℃
● SOT23-5L的封装
三.应用范围
·PMP
·数码相机
·GPS
·数码相框
·蓝牙设备
·手持仪器
四.技术规格书（产品PDF)
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！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
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DC/DC 同步降压转换器 |
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PN |
Ilim |
Vin |
Vout(V) |
Fs |
lq |
Temp |
Package |
Description |
|
|
A |
V |
ADJ |
fix |
KHz |
uA |
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|
0.6 |
2.5-5.5 |
0.6-Vin |
1.8,3.3 |
1500 |
130 |
lnd |
SOT23-5 |
600mA Synchronous Step-Down DCDC converter, |
|
|
0.6 |
2.5-5.5 |
0.6-Vin |
1.8,3.3 |
1500 |
20 |
lnd |
SOT23-5 |
600mA Synchronous Step-Down DCDC converter |
|
|
0.6 |
2.5-5.5 |
0.6-Vin |
1.8,3.3 |
1500 |
20 |
lnd |
SOT23-5 |
600mA Synchronous Step-Down DCDC converter |
|
|
1.2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
SOT23-5 |
1.2A Synchronous Step-Down DCDC converter |
|
|
1.2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
SOT23-5 |
1.2A Synchronous Step-Down DC/DC Converter |
|
|
1.5 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130/20 |
Ind |
DFN-6 |
1.5A Synchronous Step-Down DCDC converter,pin compatiable with RT8010 |
|
|
1.5 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
DFN-10 |
1.5A Synchronous Step-Down DCDC converter |
|
|
2.5 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Vin |
QFN-16 |
2.5A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
2.5 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
DFN-10 |
2.5A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
SOP8 |
2A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
DFN-10 |
2A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
0.6 |
2.5-5.5 |
0.6-Vin |
- |
4000 |
130 |
Ind |
SOT23-5 |
4MHz 600mA Synchronous Step-Down DCDC converter |
|
|
1.5 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
SOT23-6 |
1.5A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
2 |
2.5-5.5 |
0.6-Vin |
1500 |
130 |
lnd |
DFN-10 |
2A 1.5MHz Synchronous Step-Down DC/DC Converter |
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|
1.0X2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 20 |
lnd |
DFN-12 |
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|
1x2 |
2.5-5.5 |
0.6-vi n |
- |
1500 |
20 |
lnd |
DFN-10 |
Two Channel Integrated Power Management IC 2 Buck (1A) |
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|
2 |
2.5-5.5 |
0.6-vi n |
- |
1500 |
20 |
lnd |
DFN-10 |
2A 1.5MHz Synchronous Step-Down DC/DC Converter |
|
|
1.2 |
2.5-5.5 |
0.6-Vin |
- |
1500 |
130 |
Ind |
SOT23-5 |
1.2A Synchronous Step-Down DC/DC Converter |
|
|
2.5 |
4.75-20 |
0.925-14 |
- |
340 |
1300 |
Ind |
SOP8 |
2.5A Synchronous Step-Down Converter with Fast Transient Response |
|
|
1 |
2.5-5.5 |
0.6-vin |
1.8,3.3 |
1500 |
130 |
Ind |
SOT23-5 |
1A Synchronous Step-Down DCDC converter |
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