The CXMD3260 is a single‐phase, constant‐on‐time, synchron‐ ous PWM controller, which drives N‐channel MOSFETs. The CXMD3260 steps down high voltage to generate low voltage chipset or RAM suppliesin notebook computers. The CXMD3260 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXMD3260 provides very high efficiency over light to heavy loads with loading‐ modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low‐noise requirements
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[ CXMD3260 ]"
 
目录
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产品概述 返回TOP
The CXMD3260 is a single‐phase, constant‐on‐time, synchron‐ ous PWM controller, which drives N‐channel MOSFETs. The CXMD3260 steps down high voltage to generate low voltage chipset or RAM suppliesin notebook computers. The CXMD3260 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXMD3260 provides very high efficiency over light to heavy loads with loading‐ modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low‐noise requirements. The CXMD3260 is equipped with accurate positive current‐ limit, output under‐voltage, and output over‐voltage prote‐ ctions, perfect for NB applications. The Power‐On‐ Reset function monitors the voltage on VCC to prevent wrong operation during power‐on. The CXMD3260 has a 1ms digital soft‐start and built‐in an integrated output discharge method for soft‐stop. An internal integrated soft‐start ramps up the output voltage with programmable slew rate to reduce the start‐up current. A soft‐stop function actively discharges the output capacitors with controlled reverse inductor current. The CXMD3260 is available in 10pin TDFN 3x3 package.
产品特点 返回TOP
 Easy pass EMI test
 Adjustable Output Voltage from +0.7V to +5.5V 0.7V Reference Voltage ±1% Accuracy Over‐Temperature
 Operates from an Input Battery Voltage Range of +1.8V to +36V
 Power‐On‐Reset Monitoring on VCC Pin
 Excellent Line and Load Transient Responses
 PFM Mode for Increased Light Load Efficiency
 Selectable PWM Frequency from 4 Preset Values
 Integrated MOSFET Drivers
 Integrated Bootstrap Forward P‐CH MOSFET
 Adjustable Integrated Soft‐Start and Soft‐Stop
 Selectable Forced PWM or Automatic PFM/PWM Mode
 Power Good Monitoring
 70% Under‐Voltage Protection
 125% Over‐Voltage Protection
 Using Sense Low‐Side MOSFET’s RDS(ON) adjustable Current‐Limit Protection
 Over‐Temperature Protection
 Auto Rework from Protection Mode
 TDFN‐10 3x3 Package
 Lead Free and Green Devices Available (RoHS Compliant)
应用范围 返回TOP
 Notebook
 Table PC
 Hand‐Held Portable
 AIO PC
 LCD Monitor / TV
 Battery Charger
 ADSL Modem
 Telecom / Networking Equipment
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			 PWM Controller(脉宽调制控制器)  | 
		|||||||||
| 
			 Part No.  | 
			
			 Input Voltage  | 
			
			 Output Voltage  | 
			
			 Frequency  | 
			
			 Efficiency  | 
			
			 Package  | 
			
			 precision  | 
			
			 Over  | 
			
			 Over  | 
			
			 Short Protection  | 
		
| 
			 Current  | 
			
			 Temperature  | 
		||||||||
| 
			 Protection  | 
			
			 Protection  | 
		||||||||
| 
			 16V  | 
			
			 ADJ  | 
			
			 300KHZ  | 
			
			 93%  | 
			
			 SOP8/DFN3*3-10DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 16V  | 
			
			 ADJ  | 
			
			 200KHz/300KHZ /600KHz  | 
			
			 93%  | 
			
			 SOP8/ DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 35V  | 
			
			 ADJ  | 
			
			 290-430KHz  | 
			
			 93%  | 
			
			 DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 35V  | 
			
			 ADJ  | 
			
			 290-430KHz  | 
			
			 93%  | 
			
			 DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 35V  | 
			
			 ADJ  | 
			
			 135-215KHz  | 
			
			 93%  | 
			
			 DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 35V  | 
			
			 ADJ  | 
			
			 135-215KHz  | 
			
			 93%  | 
			
			 DFN3*3-10  | 
			
			 2%  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		|
| 
			 40V  | 
			
			 -  | 
			
			 100-300KHz  | 
			
			 -  | 
			
			 QFN20  | 
			
			 Y  | 
			
			 Y  | 
			
			 Y  | 
		||



