AX3203 Converter Datasheet

AX3203 Datasheet PDF, Equivalent


Part Number

AX3203

Description

5A PWM Buck DC/DC Converter

Manufacture

Avantics

Total Page 7 Pages
Datasheet
Download AX3203 Datasheet


AX3203
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AX3203
150KHz, 5A PWM Buck DC/DC Converter
Page No. : 1/7
AX3203 Series
Description
The AX3203 is Monolithic IC that design for a step-down DC/DC Converter, and own
the ability of driving a 5A load without additional transistor component. The output
version included 3.3V, 5V, 12V and an adjustable type. It operates at a switching
frequency of 150KHz thus allowing smaller sized filter components than what would
be needed with lower frequency switching regulators. Other features include a
guaranteed ±4% tolerance on output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator frequency. 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.
Features
3.3V, 5V, 12V and adjustable
Adjustable version output voltage range: 1.3-37V
• ±4% max over line and load conditions
150KHz ±15% fixed switching frequency
TTL shutdown capability
Operating voltage can be up to 40V
Output load current: 5A
TO220-5L and TO263-5L packages
Low power standby mode
Thermal-shuntdown and current-limit protection
High efficiency
Built-in switching a transistor on chip, requires only 4 external components
Applications
Simple High-efficiency step-down regulator
Positive to negative converter
On-card switching regulators
Connection Diagrams
Side
View
TO220-5L
Top
View
Metal Tab GND
Pins 1,3,5
Pins 2,4
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
Side
View
TO263-5L
Top
View
Metal Tab GND
12345
12345
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
AVANTICS - AX3203 Series
Specification No.: 050310-FE0010

AX3203
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Pin Connections
Current
Source
Bias
1.235V
Reference
FB
+
R2
AMP
-
R1=2.5K
+
COMP
-
SD
2.5V
Regulator
Start
Up
++
200mV 220mV
-
COMP
+
150KHz
OSC.
+
COMP
Current
Limit
-
-
COMP
+
Driver
Thermal
Limit
Page No. : 2/7
VIN
R
5A
Switch
Output
GND
Absolute Maxium Rating (Note1)
Parameter
Supply Voltage
On/Off Pin Input Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Operating Temperature
Storage Temperature
Operating Voltage
Human Body Model
Symbol
VCC
VSD
VFB
VOUT
PD
Topr
Tstg
VOP
(Note 2)
Value
40
-0.3~+25
-0.3~+25
-1
Internally Limited
-40~+125
-65~+150
+4.5~+40
2000
Unit
V
V
V
V
W
oC
oC
V
V
Electrical Characteristics (Continued)
Specifications with boldface type apply over for full operating temperature range, the other type are for TJ=25oC
Part No.
AX3203-3.3
AX3203-5.0
AX3203-12
AX3203-ADJ
Parameter
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Symbol
Conditions
VOUT
η
VOUT
η
VOUT
η
VOUT
η
4.75VVIN40V, 0.2AILOAD5A
VIN=12V, ILOAD=5A
7VVIN40V, 0.2AILOAD5A
VIN=12V, ILOAD=5A
15VVIN40V, 0.2AILOAD5A
VIN=25V, ILOAD=5A
4.5VVIN40V, 0.2AILOAD5A
VOUT programmed for 3V
VIN=12V, VOUT=3V, ILOAD=5A
Min.
Typ. Max.
(Note3) (Note4)
3.168
3.135
3.3
3.342
3.465
- 71 -
4.800
4.750
5.0
5.200
5.250
- 78 -
11.52
11.40
12.0
12.48
12.60
- 88 -
1.193
1.180
1.230
1.267
1.280
- 72 -
Unit
V
%
V
%
V
%
V
%
AVANTICS - AX3203 Series
Specification No.: 050310-FE0010


Features www.DataSheet4U.com Page No. : 1/7 AX3 203 150KHz, 5A PWM Buck DC/DC Converter AX3203 Series Description The AX3203 is Monolithic IC that design for a ste p-down DC/DC Converter, and own the abi lity of driving a 5A load without addit ional transistor component. The output version included 3.3V, 5V, 12V and an a djustable type. It operates at a switch ing frequency of 150KHz thus allowing s maller sized filter components than wha t would be needed with lower frequency switching regulators. Other features in clude a guaranteed ±4% tolerance on ou tput voltage under specified input volt age and output load conditions, and ±1 5% on the oscillator frequency. Regardi ng protected function, thermal shutdown is to prevent over temperature operati ng from damage, and current limit is ag ainst over current operating of the out put switch. TO220-5L Package 1 2 3 4 5 Features • 3.3V, 5V, 12V and adjus table • Adjustable version output vol tage range: 1.3-37V • ±4% max over line and load conditions • 150KHz .
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