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首页 > Products > Power Management > Synchronization or Asynchronous DC Converter > Synchronization DC Step-Down Converter >Reference Voltage Source Oscillator Circuit Comparator PWM/PFM Control DC-DC Step-down Regulator Cxsd62631
Reference Voltage Source Oscillator Circuit Comparator PWM/PFM Control DC-DC Step-down Regulator Cxsd62631

CXSD62631 is a CMOS voltage reducing DC/DC adjuster composed of reference voltage source, oscillation circuit, comparator, PWM/PFM control circuit, etc. Using PWM/PFM automatic switching control circuit to achieve adjustable duty cycle, with low ripple in full input voltage range (CXSD62631A:2.5V ~ 6V,CXSD62631B:1.8V ~ 6V), features such as high efficiency and large output current. There are two kinds of feedback voltage in CXSD62631, of which XT3407A is 0.6V feedback voltage and CXSD62631B is 0.8V feedback voltage. CXSD62631 built-in power MOSFETs, which use many protection circuits such as overvoltage, overcurrent, overheating, and short circuit, will be automatically disconnected when the control value is exceeded to protect the chip. This product combines the characteristics of micro packaging and low current consumption, and is most suitable
It is used inside the power supply of the mobile device.

Reference Voltage Source Oscillator Circuit Comparator PWM/PFM Control DC-DC Step-down Regulator Cxsd62631
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  1. 1.Product Overview       2.Product Features     Zmj嘉泰姆

  2. 3.Application Scope 4.Download Technical specifications(PDF document)Zmj嘉泰姆

  3. 5.Product packaging 6.Circuit Schematic diagram  Zmj嘉泰姆
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Product Overview

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CXSD62631 is a CMOS voltage reducing DC/DC adjuster composed of reference voltage source, oscillation circuit, comparator, PWM/PFM control circuit, etc. Using PWM/PFM automatic switching control circuit to achieve adjustable duty cycle, with low ripple in full input voltage range (CXSD62631A:2.5V ~ 6V,CXSD62631B:1.8V ~ 6V), features such as high efficiency and large output current. There are two kinds of feedback voltage in CXSD62631, of which XT3407A is 0.6V feedback voltage and CXSD62631B is 0.8V feedback voltage. CXSD62631 built-in power MOSFETs, which use many protection circuits such as overvoltage, overcurrent, overheating, and short circuit, will be automatically disconnected when the control value is exceeded to protect the chip. This product combines the characteristics of micro packaging and low current consumption, and is most suitableZmj嘉泰姆
It is used inside the power supply of the mobile device.

   Product FeaturesReturn to TOPZmj嘉泰姆


High efficiency the maximum efficiency can reach 95%Zmj嘉泰姆
Maximum output current 1000mAZmj嘉泰姆
Low quiescent current typical value 40/aZmj嘉泰姆
Low voltage operation can reach 100% duty cycleZmj嘉泰姆
 PWM/PFM automatic switching: duty cycle is automatically adjustable to maintain high efficiency and low ripple in a large load rangeZmj嘉泰姆
Feedback voltage optional: XT3407A is 0.6V,XT3407B is 0.8VZmj嘉泰姆
 multiple protection functions: undervoltage protection, overvoltage protection, overtemperature protection and short circuit protectionZmj嘉泰姆

   Application ScopeReturn to TOPZmj嘉泰姆


Power supply for mobile devices such as digital cameras, electronic notebooks, PDAs, etc.Zmj嘉泰姆
Audio CD Walkman, MD and other audio devices power supplyZmj嘉泰姆
Voltage-stabilized power supply for camera, video equipment and communication equipmentZmj嘉泰姆
Power supply for microcomputerZmj嘉泰姆

   Technical Specification (product PDF)Return to TOP Zmj嘉泰姆


For detailed PDF specifications, please scan WeChat and contact us. You can also get free samples and technical support.!Zmj嘉泰姆

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   Product packaging diagramReturn to TOPZmj嘉泰姆


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   Circuit Schematic diagramReturn to TOPZmj嘉泰姆


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Product Name Operating voltage (V) Overvoltage protection point (V) Output voltage (V) Output Current (mA) Working mode Static current (uA) Oscillation frequency (KHz) HighestEfficiency(%) Encapsulation form Remarks
CXSD62630 2.5-5.5 6.2 0.6-5.0 800 PFM/PWM 40 1500 95 SOT23-5L,DFN2020-6L DCSynchronous buck
CXSD62631 1.8-5.5 6 0.6-5.0 800 PFM/PWM 40 2500 95 SOT23-5L,DFN2020-6L DCSynchronous buck
CXSD62632 2.5-6.0 NC 0.6-5.0 1000 PFM/PWM 300 1500 96 SOT23-5L DCSynchronous buck
CXSD62633 2.5-5.5 6.5 0.6-5.0 1200 COT 40 1500 95 SOT23-5L DCSynchronous buck
CXSD62634 2.5-6.2 6.2 0.6-5.0 1500 PFM/PWM 40 1500 95 SOT23-5L DCSynchronous buck
CXSD62635 2.5-7.0 7 0.6-5.0 1500 PFM/PWM 40 1500 95 SOT23-5L,DFN2020-8L DCSynchronous buck
CXSD62636 2.5-6.2 6.2 0.6-5.0 1200 PWM 500 1500 95 SOT23-5L DCSynchronous buck
CXSD62637 2.5-7.2 7.2 0.6-5.0 1500 PFM/PWM 50 1500 95 SOT23-5L DCSynchronous buck
CXSD62638 2.5-5.5 6.2 0.6-5.0 2200 PFM/PWM 40 1500 95 SOT23-5L DCSynchronous buck
CXSD62639 2.5-5.5 6.5 0.6-5.0 2000 PFM/PWM 50 1500 95 SOT23-5L DCSynchronous buck
CXSD62640 2.5-5.5 6.5 0.6-5.0 2000 PWM 800 2500 95 SOT23-5L DCSynchronous buck
CXSD62641 4.5-20 NC 0.6-18 2000 PFM/PWM 410 500 96 SOT23-6L DCSynchronous buck
CXSD62642 4.5-20 NC 0.6-18 2000 PFM/PWM 410 1000 96 SOT23-6L DCSynchronous buck
CXSD62643 4.5-24 NC 0.6-18 3000 PFM/PWM 400 1000 96 TSOT23-6FC,CPC-8L DCSynchronous buck
CXSD62644 4.5-24 NC 0.6-18 2000 PFM/PWM 300 500 96 SOT23-6L DCSynchronous buck
CXSD62645 2.0-6.0 6 0.6-5.0 1000 COT 0.5 1500 96 SOT23-6L,DFN2020-6L DCSynchronous buck
CXSD62646 2.0-7.0 7 0.6-5.0 1000 COT 0.5 1500 96 SOT23-6L,DFN2020-6L DCSynchronous buck
CXSD62647 2.7-6.0 6.3 0.6-5.0 1000 COT 40 1200 94 SOT23-5 DCSynchronous buck
CXSD62648 2.7-6.0 NC 0.6-5.0 2000 COT 40 1500 94 SOT23-5 DCSynchronous buck
CXSD62649 4.5-40 NC 0.8-36 1500 PFM/PWM 40 800 95 SOT23-6L DCSynchronous buck
CXSD62650 4.5-40 NC 0.8-36 800 PWM 6000 800 95 SOT23-6L DCSynchronous buck
CXSD62651 4.5-40 NC 0.8-36 800 PFM/PWM 40 800 95 SOT23-6L DCSynchronous buck
CXSD62652 6.4-30 NC 0.8-24 3100 PFM/PWM 880 125 91 ESOP8 DCAsynchronous Buck
CXSD6105 2.0-6.0 NC 0.6-5.0 800 PFM/PWM 200 1400 92 SOT23-5L DCSynchronous buck
CXSD6104 2.0-6.0 NC 0.6-5.0 800 PFM/PWM 200 1400 92 SOT23-5L DCSynchronous buck
CXSD62602 1.8-5.5 NC 0.6-5.0 800 PFM/PWM 40 1500 95 SOT23-5L DCSynchronous buck
CXSD62600 1.6-6.0 NC 0.6-5.0 1200/1500 PFM/PWM 210 1400 95 SOT23-5L,DFN2020-6L DCSynchronous buck
CXSD62601 2.5-5.5 6.2 0.6-5.0 1200 PFM/PWM 40 1500 95 SOT23-5L DCSynchronous buck