CXSD62309B/C/D是1.5MHz恒定频率、电流模式的降压转换器。它是理想的便携式设备需要非常大的电流高达2A从单电池锂离子电池在峰值负载条件下仍能达到90%以上,还可以在100%工作循环下运行，以实现低损耗运行，延长轻载运行时便携式系统的电池寿命提供非常低的输出纹波适用于噪声敏感应用
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产品概述 返回TOP
The CXSD62309B is a 1.5MHz constant frequency,current mode step-down converter.
It is ideal for portable equipment requiring very high current up to 2A from single-cell
Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions.
The CXSD62309B also can run at 100% duty cycle for low dropout operation, extending
battery life in portable systems while light load operation provides very low output ripple
for noise sensitive applications. The CXSD62309B can supply up to 2A output load current
from a 2.3V to 6V input voltage and the output voltage can be regulated as low as 0.6V.
The high switching frequency minimizes the size of external components while keeping
switching losses low. The internal slope compensation setting allows the device to operate
with smaller inductor values to optimize size and provide efficient operation. The
CXSD62309B is offered in a low profile 6-pin, SOT package, and is available in an adjustable
version. This device offers two operation modes, PWM control and PFM Mode switching
control, which allows a high efficiency over the wider range of the load.
产品特点 返回TOP
High Efficiency: Up to 96%
1.5MHz Constant Frequency Operation
2A Output Current
No Schottky Diode Required
2.3V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
PFM Mode for High Efficiency in Light Load
100% Duty Cycle in Dropout Operation
Low Quiescent Current: 40μA
Short Circuit Protection
Thermal Fault Protection
Inrush Current Limit and Soft Start
<1μA Shutdown Current
SOT23-6 package
应用范围 返回TOP
Cellular and Smart Phones
Wireless and DSL Modems
PDAs
Portable Instruments
Digital Still and Video Cameras
PC Cards
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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单输出降压转换器Single Output Step Down Regulator (Power Switch Integrated) |
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Part Number |
Function |
Vin(V) |
Iout |
Fsw |
VREF |
HSFET Ron(Ω) |
LSFET Ron(Ω) |
Special Function |
Constnt current |
Package |
|
高效同步降压 |
2～6 |
0.8A |
1.5MHz |
0.6V |
0.3 |
0.3 |
QR |
Int SS/Comp |
SOT23-5 |
|
|
高效同步降压 |
2～6 |
0.8A |
1.5MHz |
0.6V |
0.3 |
0.3 |
QR |
Int SS/Comp |
SOT23-5 |
|
|
高效同步降压 |
2.3～6 |
1.5A |
1.5MHz |
0.6V |
0.13 |
0.1 |
QR |
Int SS/Comp |
SOT23-5 |
|
|
高效同步降压 |
2.3～6 |
1.3A |
1.5MHz |
0.6V |
0.13 |
0.1 |
QR |
Int SS/Comp |
SOT23-5 |
|
|
高效同步降压 |
2.3～6 |
1.3A |
1.5MHz |
0.6V |
0.15 |
0.12 |
QR |
Int SS/Comp |
DFN2x2-6 |
|
|
高效同步降压 |
2.3～6 |
2A |
1.5MHz |
0.6V |
0.1 |
0.09 |
QR |
Int SS/Comp |
DFN3x3-10 |
|
|
高效同步降压 |
2.3～6 |
2A |
1.5MHz |
0.6V |
0.1 |
0.09 |
QR |
Int SS/Comp |
SOP8 |
|
|
高效同步降压 |
2.3～6 |
2A |
1.5MHz |
0.6V |
0.1 |
0.08 |
QR |
Int SS/Comp |
SOT23-6 |
|
|
高效同步降压 |
2.3～6 |
3A |
1.5MHz |
0.6V |
0.09 |
0.08 |
QR |
Int SS/Comp |
ESOP8 |
|
|
高效同步降压 |
4.5～18 |
1.2A |
1.2/0.6MHz |
0.923V |
0.15 |
0.1 |
QR |
Int SS/Comp |
SOT23-6 |
|
|
高效同步降压 |
4.5～18 |
2A |
1.2/0.6MHz |
0.923V |
0.1 |
0.09 |
QR |
Int SS/Comp |
SOP8 |
|
|
高效同步降压 |
4.5～18 |
3A |
1.2/0.6MHz |
0.923V |
0.08 |
0.08 |
QR |
Int SS/Comp |
ESOP8 |
|
|
高效同步降压 |
4～15 |
1A |
0.6MHz |
0.6V |
0.12 |
0.09 |
QR |
Int SS/Comp |
SOT23-6 |
|
|
高效同步降压 |
2～6 |
0.8A |
1.5MHz |
0.6V |
0.35 |
0.3 |
QR |
Int SS/Comp |
SOT23-5 |
|
◀ 上一篇:1,5MHZ固定频率CXSD62309SP驱动2A负载的同步降压DC转换器低压差情况可以100%占空比脉冲电流限制和软启动
下一篇▶:3A电流输出高效率同步降压DC转换器CXSD623101.5MHz固定频率转换效率可达95%PFM模式清载高效
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