Features




Four-channel 4A step-down micromodule
Wide input voltage range: 4V～14V
Output voltage range: 0.6V～5.5V
Rated 4A output, 5A peak per channel
Allows up to 5.5W power consumption without heat sinks
(TA=60℃, 200LFM).
±1.5% total output voltage regulation.
Current mode control for fast transient response
Multiple parallel connections available for large output currents
Output voltage tracking
Internal temperature detection diode output
External frequency synchronisation
Over-voltage, over-current and over-temperature protection
Lead-free solder balls
Package size: 9mm x 15mm x 5.01mm BGA77

Applications



Suitable for use in applications such as communications, data storage, industrial equipment, transportation, medical systems, and test and debug systems.

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Partial parameters




Operating ambient temperature range (AST4644CB): -40°C ～ 125°C 
Operating ambient temperature range (AST4644MB): -55℃ ～ 125℃ 
Storage temperature range: -65°C～150°C 
Peak package temperature: 245℃"