CXSD610331.5MHz constant frequency current mode, dual high-efficiency PWM step-down converter high

目录Bfz嘉泰姆

1.产品概述                       2.产品特点Bfz嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 Bfz嘉泰姆
5.产品封装图                     6.电路原理图                   Bfz嘉泰姆
7.功能概述                        8.相关产品Bfz嘉泰姆

一,产品概述(General Description)         Bfz嘉泰姆

   The CXSD61033 is a 1.5MHz constant frequency current mode, dual high-efficiency PWM step-down converter.It is ideal for portable equipment requiring very high current up t o 2A each channel from single-cell Lithium-ion batteries while still achieving over 90%efficiency during peak load onditions. The CXSD61033 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 CXSD61033 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. Bfz嘉泰姆

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.Bfz嘉泰姆

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.Bfz嘉泰姆
二.产品特点(Features)Bfz嘉泰姆
1.)High Efficiency: Up to 96%Bfz嘉泰姆
2.)1.5MHz Constant Frequency OperationBfz嘉泰姆
3.)Dual 2A Output CurrentBfz嘉泰姆
4.)No Schottky Diode RequiredBfz嘉泰姆
5.)2.3V to6V Input Voltage RangeBfz嘉泰姆
6.)Output Voltage as Low as 0.6VBfz嘉泰姆
7.)100% Duty Cycle in DropoutBfz嘉泰姆
8.)Low Quiescent Current:40μABfz嘉泰姆
9.)Short Circuit ProtectionBfz嘉泰姆
10.)Thermal Fault ProtectionBfz嘉泰姆
11.)Inrush Current Limit and Soft StartBfz嘉泰姆
12.)<1μA Shutdown CurrentBfz嘉泰姆
13.)ESOP8 packageBfz嘉泰姆
三,应用范围 (Applications)Bfz嘉泰姆
1.)Set Top BoxBfz嘉泰姆
2.)Wireless and DSL ModemsBfz嘉泰姆
3.)PDAsBfz嘉泰姆
4.)Computer PeripheralsBfz嘉泰姆
5.)Portable InstrumentsBfz嘉泰姆
6.)Digital Still and Video CamerasBfz嘉泰姆
四.下载产品资料PDF文档 Bfz嘉泰姆

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！Bfz嘉泰姆

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五,产品封装图 (Package)Bfz嘉泰姆
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六.电路原理图Bfz嘉泰姆
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七,功能概述Bfz嘉泰姆
The CXSD61033 is a dual high output current monolithicBfz嘉泰姆
switch mode step-down DC-DC converter. TheBfz嘉泰姆
device operates at a fixed 1.5MHz switchingBfz嘉泰姆
frequency, and uses a slope compensated currentBfz嘉泰姆
mode architecture. This step-down DC-DC converterBfz嘉泰姆
can supply up to dual respective 2000mA outputBfz嘉泰姆
current at VIN = 3.6V and has an input voltage rangeBfz嘉泰姆
from 2.3V to 6V. It minimizes external componentBfz嘉泰姆
size and optimizes efficiency at the heavy loadBfz嘉泰姆
range. The slope compensation allows the device toBfz嘉泰姆
remain stable over a wider range of inductor valuesBfz嘉泰姆
so that smaller values (1μH to 4.7μH) with lowerBfz嘉泰姆
DCR can be used to achieve higher efficiency. OnlyBfz嘉泰姆
a small bypass input capacitor is required at theBfz嘉泰姆
output. The adjustable version can be programmedBfz嘉泰姆
with external feedback to any voltage, ranging fromBfz嘉泰姆
0.6V to nearly the input voltage. It uses internalBfz嘉泰姆
MOSFETs to achieve high efficiency and canBfz嘉泰姆
generate very low output voltages by using anBfz嘉泰姆
internal reference of 0.6V. At dropout, the converterBfz嘉泰姆
duty cycle increases to100% and the output voltageBfz嘉泰姆
tracks the input voltage minus the low RDS(ON)Bfz嘉泰姆
drop of the P-channel high-side MOSFET and theBfz嘉泰姆
inductor DCR. The internal error amplifier andBfz嘉泰姆
compensation provides excellent transient response,Bfz嘉泰姆
load and line regulation. Internal soft start eliminatesBfz嘉泰姆
any output voltage overshoot when the enable or theBfz嘉泰姆
input voltage is applied.Bfz嘉泰姆
八,相关产品                      更多同类产品......Bfz嘉泰姆