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首页 > Products > Power Management > DC/DC Step-Down Converter > Buck Step-Down Converter >High-Speed Step-Down Controller with LDO Controller for Notebook Computer CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provide
High-Speed Step-Down Controller with LDO Controller for Notebook Computer CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provide

CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The CXSD62358 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size. The CXSD62358 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.75V. CXSD62358 LDO controller can drive an external NMOSFET to provide a second output voltage from PWM output or other power source. It is adjusted output from 0.75V. The independent enable input, open-drain power good indicator, under-voltage protection and soft-start are provided for system application

High-Speed Step-Down Controller with LDO Controller for Notebook Computer CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provide
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1.产品概述       2.产品特点     lcJ嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)lcJ嘉泰姆

5.产品封装       6.电路原理图  lcJ嘉泰姆

7.相关产品lcJ嘉泰姆

   产品概述 返回TOPlcJ嘉泰姆


    CXSD62358 PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The CXSD62358 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size. The CXSD62358 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.75V. CXSD62358 LDO controller can drive an external NMOSFET to provide a second output voltage from PWM output or other power source. It is adjusted output from 0.75V. The independent enable input, open-drain power good indicator, under-voltage protection and soft-start are provided for system application. The CXSD62358 is available in 16-pin TQFN (3X3) package

   产品特点 返回TOPlcJ嘉泰姆


--PWM Controller lcJ嘉泰姆

„ Ultra-High Efficiency lcJ嘉泰姆

„ No Current-Sense Resistor (Lossless ILIMIT) lcJ嘉泰姆

„ Quasi-PWM with 100ns Load-Step Response lcJ嘉泰姆

„ 1% VOUT Accuracy Over Line and Load lcJ嘉泰姆

„ 0.75V to 3.6V Adjustable Output Range lcJ嘉泰姆

„ 4.5V to 24V Battery Input Range lcJ嘉泰姆

„ OVP & UVP lcJ嘉泰姆

„ 1.7ms Soft-Start lcJ嘉泰姆

„ Drives Large Synchronous-Rectifier FETs lcJ嘉泰姆

„ Power-Good Indicator lcJ嘉泰姆

--LDO Controller lcJ嘉泰姆

„ 1.5% Accuracy Over Line and Load lcJ嘉泰姆

„ Adjustable Output down to 0.75V lcJ嘉泰姆

„ Independent Enable and Power Good Indicator lcJ嘉泰姆

„ Drives N-channel MOSFET within Rail to Rail Controller Voltage lcJ嘉泰姆

„ MLCC and POSCAP StablelcJ嘉泰姆

   应用范围 返回TOPlcJ嘉泰姆


„ Notebook ComputerslcJ嘉泰姆

„ CPU Core Supply lcJ嘉泰姆

„ Chipset/RAM Supply as Low as 0.75V lcJ嘉泰姆

„ 1.8V and 2.5V I/O Supply lcJ嘉泰姆

„ Networking Power SupplylcJ嘉泰姆

   技术规格书(产品PDF) 返回TOP lcJ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lcJ嘉泰姆

 QQ截图20160419174301.jpglcJ嘉泰姆

产品封装图 返回TOPlcJ嘉泰姆


image.pnglcJ嘉泰姆

电路原理图 返回TOPlcJ嘉泰姆

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Synchronous (Quasi-PWM) Step Down ControllerlcJ嘉泰姆

Part   NO.lcJ嘉泰姆

Vin(V)lcJ嘉泰姆

min.lcJ嘉泰姆

Vin(V)lcJ嘉泰姆

max.lcJ嘉泰姆

VOUTlcJ嘉泰姆

(V)lcJ嘉泰姆

FSWlcJ嘉泰姆

(k Hz)lcJ嘉泰姆

FBlcJ嘉泰姆

(V)lcJ嘉泰姆

NotelcJ嘉泰姆

PackagelcJ嘉泰姆

CXSD62355lcJ嘉泰姆

3lcJ嘉泰姆

28lcJ嘉泰姆

0.7~1.8lcJ嘉泰姆

300/400lcJ嘉泰姆

0.8lcJ嘉泰姆

EN, SS, PGOOD,   OVP, UVP, OCP, VTTREF, Built-in BST diode, DDR1/2/3/3L, 2A LDO for VTTlcJ嘉泰姆

TQFN3X3-20lcJ嘉泰姆

CXSD62356lcJ嘉泰姆

4.5lcJ嘉泰姆

28lcJ嘉泰姆

0.7~2.6lcJ嘉泰姆

ADJlcJ嘉泰姆

0.7lcJ嘉泰姆

EN,   PGOOD, OVP, UVP, OCP, VOUT Adjustable,1.5ms VOUT Servo Soft Start, 4700ppm/°C   RON Coefficient lcJ嘉泰姆

TDFN3X3-10lcJ嘉泰姆

CXSD62357lcJ嘉泰姆

4.5lcJ嘉泰姆

28lcJ嘉泰姆

0.5~3.3lcJ嘉泰姆

ADJlcJ嘉泰姆

0.5lcJ嘉泰姆

EN,   PGOOD, OVP, UVP, OCP, VOUT Adjustable, 1.5ms VOUT Servo Soft Start,   4700ppm/°C RON CoefficientlcJ嘉泰姆

TQFN2X2-12lcJ嘉泰姆

CXSD62358lcJ嘉泰姆

4.5lcJ嘉泰姆

24lcJ嘉泰姆

0.75~3.6lcJ嘉泰姆

ADJlcJ嘉泰姆

0.75lcJ嘉泰姆

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TQFN3X3-16lcJ嘉泰姆

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24lcJ嘉泰姆

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4.5lcJ嘉泰姆

24lcJ嘉泰姆

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