• [ 产品资料下载 ]

样品申请

目录XfN嘉泰姆

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

 XfN嘉泰姆

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

     The CXSD61054 is a fully in tegrated , high-efficiency  2.0A  synchronous  rectified step-down  converter.  The CXSD61054 operates at high efficiencyXfN嘉泰姆
over a wide output current load range.This device offers two operation modes,PWM control and PFM Mode switching control, which allows a highXfN嘉泰姆
efficiency over the wider range of the load.The  rber of readily available standard external components and is available in an 6-pin SOT23 ROHS compliant package.XfN嘉泰姆

二.产品特点(Features)XfN嘉泰姆

* High Efficiency: Up to 95%XfN嘉泰姆
* 600KHz Frequency OperationXfN嘉泰姆
* 2.0A Output CurrentXfN嘉泰姆
* No Schottky Diode RequiredXfN嘉泰姆
* 3.5V to 18V Input Voltage RangeXfN嘉泰姆
* 0.6V ReferenceXfN嘉泰姆
 Slope Compensated Current ModeXfN嘉泰姆
 Control for Excellent Line and LoadXfN嘉泰姆
 Transient ResponseXfN嘉泰姆
* Integrated internal compensationXfN嘉泰姆
* Stable with Low ESR Ceramic OutputXfN嘉泰姆
   CapacitorsXfN嘉泰姆
* Over Current Protection withXfN嘉泰姆
    Hiccup-ModeXfN嘉泰姆
* Input over voltage protection(OVP)XfN嘉泰姆
*  Thermal ShutdownXfN嘉泰姆
*  Inrush Current Limit and Soft StartXfN嘉泰姆
*  Available in SOT23-6 PackageXfN嘉泰姆
*  -40°C to +85°C Temperature RangeXfN嘉泰姆
三,应用范围 (Applications)XfN嘉泰姆

Distributed Power SystemsXfN嘉泰姆
Digital Set Top BoxesXfN嘉泰姆
Flat Panel Television and MonitorsXfN嘉泰姆
Wireless and DSL ModemsXfN嘉泰姆
Notebook ComputerXfN嘉泰姆
四.技术规格书下载（产品PDF）XfN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！XfN嘉泰姆

 XfN嘉泰姆

五,产品封装图 (Package)XfN嘉泰姆

XfN嘉泰姆
六.电路原理图XfN嘉泰姆
XfN嘉泰姆
七,功能概述XfN嘉泰姆

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

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

◀ 上一篇:CXSD61053 wide input range high efficiency DC step down switching regulator 4A output current Current mode PWM control

返回顶部

下一篇▶: CXSD61055 4.5V to 16V Input Voltage Range Integrated internal compensation 2A Output Current Over Current Protection with Hiccup-Mode

共有条评论 用户名: 密码: 验证码: 匿名发表