XL1509 is a 150KHz fixed frequency pulse Wide modulation (step-down) DC/DC converter. Has 2A Load driving capability and high efficiency, low ripple and excellent Linearity, good load regulation capability, and only a minimum of external components are required. Adjustable output is easy to use, built-in frequency compensation and fixed frequency Rate oscillator. Pulse width modulation control circuit can linearly adjust the duty The ratio is from 0 to 100%. With enabling function, built-in overcurrent and Short-circuit protection function, when over-current and short-circuit protection occurs, The operating frequency of XL1509 will be reduced from 150KHz to 50KHz. The built-in frequency compensation module maximizes the external components of the XL1509 less.  
 

1.Pin diagram(Top View) :


2.Absolute Maximum Ratings:


3.Electrical Characteristics:

4.Electrical Characteristics (DC Parameters) :
Vin = 12V for the 3.3V,5V,and Adjustable versions and Vin=24V for the 12V version, GND=0V,
Vin & GND parallel connect a 220uf/50V capacitor; Iout=500mA, Ta = 25ºC; the others floating
unless otherwise specified.

• Wide 4.5V to 40V Input Voltage Range
• 3.3V,5V,12V, and adjustable versions
• Output Adjustable from 1.23V to 37V
• Maximum Duty Cycle 100%
• Minimum Drop Out 1.5V
• Fixed 150KHz Switching Frequency
• 2A Constant Output Current Capability
• Internal Optimize Power Transistor
• High efficiency
• Excellent line and load regulation
• TTL shutdown capability
• ON/OFF pin with hysteresis function
• Built in thermal shutdown function
• Built in current limit function
• Built in second current limit function
• Available in SOIC8 package
 

•LCD Monitor and LCD TV
• Digital Photo Frame
• Set-up Box
•ADSL Modem
• Telecom / Networking Equipment
 

why choose us :
advantage:
1.Produce Range
Yangjiang RUIXIAO Enterprise Co,.Ltd,major in the electronic component , who have wide range of products,
such as IC,resistor , capacitor , mosfet , diodes, module , LED, relay, lcd. pcb board . and so.  the brand involves:SHARP, POWER, ,, NS, ON, ST , IR, VISHAY , TOSHIBA, FAIRCHILD,MICROCHIP, ATMEL,EVERYLIGHT all the kinds  of electronic component you need will be find in  here.



2.Scope of application
the product  is widely used in Automotive industry control,new energy industry,Audio,Home appliances equipment,Communication industry.it can  meet the diverse needs of customers

3.service:
with the  "User first, customer first" Company motto, quality assurance ,  economic price , fast Delivery time is our only faith. we will try our best to make every customer to enjoy the  the most flexible,efficient  services.We sincere hope that we can seek the common development and cooperation with  the customer together to achieve a win-win situation.

 

4.Logistics:
we can send the goods to the customer's country directly by the international logistics.  no matter send by air or by sea. 
we will try our best to let the customer to get the parcel more convenient .
(noted:Not bear  any fee and tax of the transportation cost.)