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AX3005

AXElite
Part Number AX3005
Manufacturer AXElite
Description 3A PWM Buck DC/DC Converter
Published Jul 17, 2014
Detailed Description AX3005 150KHz, 3A PWM Buck DC/DC Converter  GENERAL DESCRIPTION The AX3005 series are monolithic IC designed for a ste...
Datasheet PDF File AX3005 PDF File

AX3005
AX3005


Overview
AX3005 150KHz, 3A PWM Buck DC/DC Converter  GENERAL DESCRIPTION The AX3005 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor.
It saves board space.
The external shutdown function can be controlled by logic level and then come into standby mode.
The internal compensation makes feedback control having good line and load regulation without external design.
Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch.
If current limit function occurs and VFB is down below 0.
5V, the switching frequency will be reduced.
The AX3005 series operates at a switching frequency of 150KHz thus allow smaller sized filter components than what would be needed with lower frequency switching regulators.
The output version included fixed 3.
3V, 5V, 12V, and an adjustable type.
The chips are available in a 5-Lead TO263 and 5-Lead TO220 packages.
 FEATURES - •yÑb€ R ` w VÛm5V, 12V and c Output voltage: 3.
3V, adjustable om output version.
.
ch range, 1.
23V to 38.
5V.
Adjustable version output voltage e t o f o g 150KHz fixed switching frequency.
.
w ww Voltage mode non-synchronous PWM control.
Thermal-shutdown and current-limit protection.
ON/OFF shutdown control input.
Short Circuit Protect (SCP).
Operating voltage can be up to 40V.
Output load current: 3A.
5-Lead TO263 and TO220 Pb-Free packages.
Low power standby mode.
Built-in switching transistor on chip.
1/11 Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.
1.
6 Mar.
22, 2012 AX3005  BLOCK DIAGRAM EN 200mV V CC 220mV CURRENT SOURCE BIAS 1.
235V REFERENCE 2.
5V REGULATOR START UP COMP.
+ _ Current limit FB R2 + AMP _ COMP.
R1 + COMP.
COMP.
CONTROL + DRIVER Thermal Shutdown ADJ : R2=0Ω , R1=OPEN  PIN ASSIGNMENT The packages of AX3005 are TO263-5L and TO220-5L(R); the pin assignment is...


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