CXSD61019 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A load with high efficiency, low ripple and excellent line and load regulation.

发布时间:2020-04-06 09:43:38 浏览次数:716 作者:嘉泰姆 来源:1
摘要:CXSD61019 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A load with high efficiency, low ripple and excellent line and load regulation.

目录

   产品概述 返回TOPNin嘉泰姆


         The CXSD61019 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation  and  a fixed-frequency oscillator.
       The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An over current protection function is built inside.When short protection function happens, the operation frequency will be reduced from 180KHz to 48KHz. An internal compensation block is built in to minimize external component count

   产品特点 返回TOPNin嘉泰姆


Wide 8V to 36V Input Voltage Range
Output Adjustable from 1.25V to 32V
Maximum Duty Cycle 100%
Minimum Drop Out 0.3V
Fixed 180KHz Switching Frequency
Maximum 3.5A Switching Current
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
With output constant current loop
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
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   应用范围 返回TOPNin嘉泰姆


Car Charger
Battery Charger
LCD Monitor and LCD TV
Portable instrument power supply
Telecom / Networking EquipmentNin嘉泰姆

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Pin NumberPin NameDescription
1NCNo Connected.
2SWPower Switch Output Pin (SW). SW is the switch node that
supplies power to the output.
(Note: Connected the back exposed PAD to SW.)
3GNDGround Pin. Care must be taken in layout. This pin should be
placed outside of the Schottky Diode to output capacitor
ground path to prevent switching current spikes from inducing
voltage noise into CXSD61019.
4FBFeedack Pin (FB). Through an external resistor divider
network, FB senses the output voltage and regulates it. The
feedback threshold voltage is 1.25V.
5ENEnable Pin. Drive EN pin low to turn off the device, drive it
high to turn it on.
6OCSETOutput Constant Current Set Pin.
7VCInternal Voltage Regulator Bypass Capacity. In typical system
application, The VC pin connect a 1uf capacity to VIN.
8VINSupply Voltage Input Pin. CXSD61019 operates from a 8V to 36V  DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input.

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