• "

Ordering

目录XPz嘉泰姆

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

 XPz嘉泰姆

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

     The CXSD61054 is a fully in tegrated , high-efficiency  2.0A  synchronous  rectified step-down  converter.  The CXSD61054 operates at high efficiencyXPz嘉泰姆
over a wide output current load range.XPz嘉泰姆

      This device offers two operation modes,PWM control and PFM ModeXPz嘉泰姆
switching control, which allows a high efficiency over the wider range of theXPz嘉泰姆
load.The  rber of readily available standard external components and isXPz嘉泰姆
available in an 6-pin SOT23 ROHS compliant package.XPz嘉泰姆

二.产品特点(Features)XPz嘉泰姆

* High Efficiency: Up to 95%XPz嘉泰姆
* 600KHz Frequency OperationXPz嘉泰姆
* 2.0A Output CurrentXPz嘉泰姆
* No Schottky Diode RequiredXPz嘉泰姆
* 3.5V to 18V Input Voltage RangeXPz嘉泰姆
* 0.6V ReferenceXPz嘉泰姆
 Slope Compensated Current ModeXPz嘉泰姆
 Control for Excellent Line and LoadXPz嘉泰姆
 Transient ResponseXPz嘉泰姆
* Integrated internal compensationXPz嘉泰姆
* Stable with Low ESR Ceramic OutputXPz嘉泰姆
   CapacitorsXPz嘉泰姆
* Over Current Protection withXPz嘉泰姆
    Hiccup-ModeXPz嘉泰姆
* Input over voltage protection(OVP)XPz嘉泰姆
*  Thermal ShutdownXPz嘉泰姆
*  Inrush Current Limit and Soft StartXPz嘉泰姆
*  Available in SOT23-6 PackageXPz嘉泰姆
*  -40°C to +85°C Temperature RangeXPz嘉泰姆
三,应用范围 (Applications)XPz嘉泰姆

Distributed Power SystemsXPz嘉泰姆
Digital Set Top BoxesXPz嘉泰姆
Flat Panel Television and MonitorsXPz嘉泰姆
Wireless and DSL ModemsXPz嘉泰姆
Notebook ComputerXPz嘉泰姆
四.技术规格书下载（产品PDF）XPz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！XPz嘉泰姆

 XPz嘉泰姆

五,产品封装图 (Package)XPz嘉泰姆

XPz嘉泰姆
六.电路原理图XPz嘉泰姆

XPz嘉泰姆
XPz嘉泰姆
七,功能概述XPz嘉泰姆

Internal Regulator XPz嘉泰姆
The CXSD61054 is a current mode step down DC/DC converter that provides excellentXPz嘉泰姆
transient response with no extra external compensation components. This device containsXPz嘉泰姆
an internal, low resistance, high voltage power MOSFET, and operates at a high 600KXPz嘉泰姆
operating frequency to ensure a compact, high efficiency design with excellent AC and DCXPz嘉泰姆
performance.XPz嘉泰姆

Error AmplifierXPz嘉泰姆
The error amplifier compares the FB pin voltage with the internal FB reference (VFB) andXPz嘉泰姆
outputs a current proportional to the difference between the two. This output current is thenXPz嘉泰姆
used to charge or discharge the internal compensation network to form the COMP voltage,XPz嘉泰姆
which is used to control the power MOSFET current. The optimized internal compensationXPz嘉泰姆
network minimizes the external component counts and simplifies the control loop design. XPz嘉泰姆
Internal Soft-StartXPz嘉泰姆
The soft-start is implemented to prevent the converter output voltage from overshootingXPz嘉泰姆
during startup. When the chip starts, the internal circuitry generates a soft-start voltage (SS)XPz嘉泰姆
ramping up from 0V to 0.6V. When it is lower than the internal reference (REF), SSXPz嘉泰姆
overrides REF so the error amplifier uses SS as the reference. When SS is higher thanXPz嘉泰姆
REF, REF regains control. The SS time is internally fixed to 1 ms.XPz嘉泰姆
Over-Current-Protection and HiccupXPz嘉泰姆
The CXSD61054 has cycle-by-cycle over current limit when the inductor current peak valueXPz嘉泰姆
exceeds the set current limit threshold. Meanwhile, output voltage starts to drop until FB isXPz嘉泰姆
below the Under-Voltage (UV) threshold, typically 30% below the reference. Once a UV isXPz嘉泰姆
triggered, the CXSD61054 enters hiccup mode to periodically restart the part. ThisXPz嘉泰姆
protection mode is especially useful when the output is dead-short to ground. The averageXPz嘉泰姆
short circuit current is greatly reduced to alleviate the thermal issue and to protect theXPz嘉泰姆
regulator. The CXSD61054 exits the hiccup mode once the over current condition isXPz嘉泰姆
removed. XPz嘉泰姆
Startup and Shutdown XPz嘉泰姆
If both VIN and EN are higher than their appropriate thresholds, the chip starts. TheXPz嘉泰姆
reference block starts first, generating stable reference voltage and currents, and then theXPz嘉泰姆
internal regulator is enabled. The regulator provides stable supply for the remainingXPz嘉泰姆
八,相关芯片选择指南               更多同类产品......XPz嘉泰姆

◀ Previous:CXSD61053 wide input range high efficiency DC step down switching regulator 4A output current Current mode PWM control

Back to top

Next▶: CXSD61055 4.5V to 16V Input Voltage Range Integrated internal compensation 2A Output Current Over Current Protection with Hiccup-Mode