目录ghM嘉泰姆

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

一,产品概述(General Description)         ghM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. ghM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.ghM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.ghM嘉泰姆
二.产品特点(Features)ghM嘉泰姆
1.)High Efficiency: Up to 96%ghM嘉泰姆
2.)1.5MHz Constant Frequency OperationghM嘉泰姆
3.)Dual 2A Output CurrentghM嘉泰姆
4.)No Schottky Diode RequiredghM嘉泰姆
5.)2.3V to6V Input Voltage RangeghM嘉泰姆
6.)Output Voltage as Low as 0.6VghM嘉泰姆
7.)100% Duty Cycle in DropoutghM嘉泰姆
8.)Low Quiescent Current:40μAghM嘉泰姆
9.)Short Circuit ProtectionghM嘉泰姆
10.)Thermal Fault ProtectionghM嘉泰姆
11.)Inrush Current Limit and Soft StartghM嘉泰姆
12.)<1μA Shutdown CurrentghM嘉泰姆
13.)ESOP8 packageghM嘉泰姆
三,应用范围 (Applications)ghM嘉泰姆
1.)Set Top BoxghM嘉泰姆
2.)Wireless and DSL ModemsghM嘉泰姆
3.)PDAsghM嘉泰姆
4.)Computer PeripheralsghM嘉泰姆
5.)Portable InstrumentsghM嘉泰姆
6.)Digital Still and Video CamerasghM嘉泰姆
四.下载产品资料PDF文档 ghM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！ghM嘉泰姆

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五,产品封装图 (Package)ghM嘉泰姆
ghM嘉泰姆
六.电路原理图ghM嘉泰姆

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七,功能概述ghM嘉泰姆
The CXSD61033 is a dual high output current monolithicghM嘉泰姆
switch mode step-down DC-DC converter. TheghM嘉泰姆
device operates at a fixed 1.5MHz switchingghM嘉泰姆
frequency, and uses a slope compensated currentghM嘉泰姆
mode architecture. This step-down DC-DC converterghM嘉泰姆
can supply up to dual respective 2000mA outputghM嘉泰姆
current at VIN = 3.6V and has an input voltage rangeghM嘉泰姆
from 2.3V to 6V. It minimizes external componentghM嘉泰姆
size and optimizes efficiency at the heavy loadghM嘉泰姆
range. The slope compensation allows the device toghM嘉泰姆
remain stable over a wider range of inductor valuesghM嘉泰姆
so that smaller values (1μH to 4.7μH) with lowerghM嘉泰姆
DCR can be used to achieve higher efficiency. OnlyghM嘉泰姆
a small bypass input capacitor is required at theghM嘉泰姆
output. The adjustable version can be programmedghM嘉泰姆
with external feedback to any voltage, ranging fromghM嘉泰姆
0.6V to nearly the input voltage. It uses internalghM嘉泰姆
MOSFETs to achieve high efficiency and canghM嘉泰姆
generate very low output voltages by using anghM嘉泰姆
internal reference of 0.6V. At dropout, the converterghM嘉泰姆
duty cycle increases to100% and the output voltageghM嘉泰姆
tracks the input voltage minus the low RDS(ON)ghM嘉泰姆
drop of the P-channel high-side MOSFET and theghM嘉泰姆
inductor DCR. The internal error amplifier andghM嘉泰姆
compensation provides excellent transient response,ghM嘉泰姆
load and line regulation. Internal soft start eliminatesghM嘉泰姆
any output voltage overshoot when the enable or theghM嘉泰姆
input voltage is applied.ghM嘉泰姆
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