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AVANTICS - AX3203 Series

Specification No.: 050310-FE0010

AX3203

150KHz, 5A PWM Buck DC/DC Converter

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

AX3203 Series

1 2 3

5

4

1 2

4 5

3

Side

View

Top

View

Metal Tab GND

TO220-5L

Pins 1,3,5

Pins 2,4

5 - On/Off

4 - Feed Back

3 - Ground

2 - Output

1 - VIN

Side

View

Top

View

Metal Tab GND

TO263-5L

5 - On/Off

4 - Feed Back

3 - Ground

2 - Output

1 - VIN