Features

 AEC-Q100 qualified for automotive

application

 Temperature Grade 1: -40℃ to 125℃

Ambient Operating Temperature Range

 Device HBM ESD Classification Level

Class3A

 Operating Voltage：4.5V~45V

 Adjustable and 5.0V Versions

 Minimum Drop Out 1.5V

 Fixed 150KHz Switching Frequency

 2A Constant Output Current Capability

 Internal Optimize Power Transistor

 TTL shutdown capability

 Built in thermal shutdown function

 Built in current limit protection function

 Built in output short protection function

 Available in SOP8-EPpackage

General Description

The XL1509Q is an AEC-Q100 qualified ，

150 KHz fixed frequency buck DC/DC

converter, capable of driving a 2A load with

high voltage, high efficiency. The XL1509Q

supports wide input operating voltage range

of 4.5V ~ 45V and a maximum duty cycle of

100% output. A built-in loop compensation

module reduces components in the system,

lowering power system cost and reducing

printed circuit board space.

The XL1509Q is available in adjustable and

fixed 5.0V versions. The XL1509Q has

built-in thermal shutdown, current limit

protection and output short protection

function and so on. When the output short

protection function happens, the operation

frequency will be reduced about from

150KHz to 30KHz.

Applications

 Vehicle Mounted Device

 Industrial and Motor Control

 Networking Equipment