• "

产品订购

目录yOM嘉泰姆

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

 yOM嘉泰姆

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

     The CXSD61054 is a fully in tegrated , high-efficiency  2.0A  synchronous  rectified step-down  converter.  The CXSD61054 operates at high efficiencyyOM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 highyOM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.yOM嘉泰姆

二.产品特点(Features)yOM嘉泰姆

* High Efficiency: Up to 95%yOM嘉泰姆
* 600KHz Frequency OperationyOM嘉泰姆
* 2.0A Output CurrentyOM嘉泰姆
* No Schottky Diode RequiredyOM嘉泰姆
* 3.5V to 18V Input Voltage RangeyOM嘉泰姆
* 0.6V ReferenceyOM嘉泰姆
 Slope Compensated Current ModeyOM嘉泰姆
 Control for Excellent Line and LoadyOM嘉泰姆
 Transient ResponseyOM嘉泰姆
* Integrated internal compensationyOM嘉泰姆
* Stable with Low ESR Ceramic OutputyOM嘉泰姆
   CapacitorsyOM嘉泰姆
* Over Current Protection withyOM嘉泰姆
    Hiccup-ModeyOM嘉泰姆
* Input over voltage protection(OVP)yOM嘉泰姆
*  Thermal ShutdownyOM嘉泰姆
*  Inrush Current Limit and Soft StartyOM嘉泰姆
*  Available in SOT23-6 PackageyOM嘉泰姆
*  -40°C to +85°C Temperature RangeyOM嘉泰姆
三,应用范围 (Applications)yOM嘉泰姆

Distributed Power SystemsyOM嘉泰姆
Digital Set Top BoxesyOM嘉泰姆
Flat Panel Television and MonitorsyOM嘉泰姆
Wireless and DSL ModemsyOM嘉泰姆
Notebook ComputeryOM嘉泰姆
四.技术规格书下载（产品PDF）yOM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！yOM嘉泰姆

 yOM嘉泰姆

五,产品封装图 (Package)yOM嘉泰姆

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

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

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