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AX3016 Datasheet Preview

AX3016 Datasheet

1.2A PWM Buck DC/DC Converter

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AX3016
1.2A PWM Buck DC/DC Converter
GENERAL DESCRIPTION
The AX3016/A series are monolithic IC designed for a step-down DC/DC converter,
and own the ability of driving a 1.2A 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 outside compensation makes feedback control having good line and load
regulation. Regarding protected function, thermal shutdown is to prevent over temperature
operating from damage; current limit is against over current operating of the output switch
that set by outside resistance. Current limit depends on RSENSE value. The over voltage
protection (OVP) that can avoid high VOUT voltage to damage circuit and capacitor, the
OVP voltage is set by outside resistances. The chip is available in SOP-8L-EP package
which features small size as exposed pad to reduce the junction-to-case resistance.
FEATURES
- Operating voltage can be up to 40V
- Adjustable version output voltage range form 3.3V to 30V.
- Output load current: 1.2A
- External OVP setting function
- Operating Frequency: 50KHz
- Current mode non-synchronous PWM converter
- Thermal-shutdown and current-limit protection.
- Shutdown and soft-start function.
- Short Circuit Protect (SCP)
- External current limit setting
- Under voltage Lockout
- SOP-8L-EP Pb-Free package
- Line-compensation
1/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Dec.02, 2010




AXElite

AX3016 Datasheet Preview

AX3016 Datasheet

1.2A PWM Buck DC/DC Converter

No Preview Available !

AX3016
BLOCK DIAGRAM
EN/CT
CURRENT
SOURCE
BIAS
1.23V
REFERENCE
2.5 V
REGULATOR
START-UP
Soft-Start
VIN
FB
OVP
1.08V
+
_AMP
0.4V
50K/ 130KHz
OSC.
Current 140mV
limit
COMP.
+
SENSE1
SENSE2
+
COMP.
_
AMP
+
OVP
+
_AMP SCP
CONTROL
+
DRIVER
Thermal
Shutdown
1.2 A
SWITCH
SW
Vss
PIN ASSIGNMENT
The package of AX3016/A is SOP-8L-EP; the pin assignment is given by:
SW 1
SENSE1 2
SENSE2 3
OVP 4
( Top View )
Vss
SOP-8L-EP
8 Vcc
7 Vss
6 EN/CT
5 FB
Name
SW
SENSE1
SENSE2
OVP
FB
EN/CT
VSS
VCC
Description
Switch pin. Connect external
inductor and diode here
Current Sense input1
Current Sense input2
Over voltage detect pin
Output voltage feedback
control
Shutdown and auto restart
control pin
GND pin
Operating voltage input
ORDER/MARKING INFORMATION
Order Information
Top Marking
AX3016 X X X
Frequency Package Type Packing
Blank: 50KHz ES: SOP-8L-EP Blank : Tube
A: 130KHz
A : Taping
Logo
AX3 0 1 6
Y YWWX
Part number
ID code: internal
WW: 01~52
Year: 10=2010
11=2011
2/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Dec.02, 2010


Part Number AX3016
Description 1.2A PWM Buck DC/DC Converter
Maker AXElite
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AX3016 Datasheet PDF





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