CXSD62318是一个1.5 MHz的恒流模式，双高效率。脉冲宽度调制降压转换器。它非常适合需要大电流的便携式设备在峰值负载条件下，单电池锂离子电池的每个通道最多可达2A，同时仍能达到90%以上的效率
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产品概述 返回TOP
PWM step-down converter. It is ideal for portable equipment requiring very high current
up to 2A each channel from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The CXSD62318 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
CXSD62318 can supply up to 2A output load current each channel 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 device is available
in a Pb-free, 8-Lead ESOP package and is rated over the -40°C to +85°C temperature
range.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
Dual 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
ESOP8 package
应用范围 返回TOP
Cellular and Smart Phones
Wireless and DSL Modems
PDAs
Portable Instruments
Digital Still and Video Cameras
Set Top Box
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产品封装图 返回TOP
电路原理图 返回TOP
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双输出转降压换器Dual Output Regulator (Power Switch Integrated) |
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|
Part Number |
Function |
Vin(V) |
Iout |
Fsw |
VREF(V) |
HSFET Ron(Ω) |
LSFET Ron(Ω) |
Special Function |
Package |
|
双通道降压 |
2～6 |
0.8 A |
1.5MHz |
0.6 |
0.35 |
0.3 |
Int SS/Comp |
DFN3x3-10 |
|
|
双通道降压 |
2.3～6 |
1.5 A |
1.5MHz |
0.6 |
0.1 |
0.09 |
Int SS/Comp |
DFN3x3-12 |
|
|
双通道降压 |
2.3～6 |
2 A |
1.5MHz |
0.6 V |
0.1 |
0.09 |
Int SS/Comp |
ESOP8 |
|
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