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) |
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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 |