AMS3121 Datasheet, PDF (1/9 Pages) Advanced Monolithic Systems Ltd – 2A Fast Transient Linear Regulator

General Description
The AMS3121 is a high performance linear regulator
with very low dropout voltage and excellent transient
response. It is designed to operate with wide input
voltage range of 1.5 – 7Volts making it ideal for two
step conversion while maintaining high efficiency for
many power sensitive applications. The device is
capable of supplying 2A of output current with a
typical dropout voltage of 550mV at 2A. The product
is only available in a fixed output voltage option.
The product includes complete short-circuit and
thermal protection. The combination of these two
internal protection circuits gives the device a
comprehensive safety system to safe guard against
extreme adverse operating conditions.
The AMS3121 is available in both 3-pin TO-220 and
TO-263 packages, and it is rated for -40°C to
+125°C temperature range.
Typical Application
AMS3121
2A Fast Transient Linear Regulator
Features
• V_IN range: 1.5 – 7V
• Fixed output voltage as low as 0.6V
• 2A maximum output current
• 550mV typical dropout voltage at 2A
• Low self noise
• 125µA typical supply current
• PSRR >40dB at 10KHz
• Stable with Electrolytic, Tantalum or
Ceramic capacitors
• Current Limit protection
• Over-Temperature Shutdown
• -40 to +125°C temperature range
• Available in 3-pin TO-220 and TO-263
surface mount packages
• RoHS & WEEE compliant
Applications
• Set-top Box
• DVD, Blue-ray DVD writers
• LCD TVs and LCD monitors
• Battery Powered Equipment
• Infotainment
• Wireless & RF: applications
• High Efficiency “Green” Laptops & notebook
02/11/2010
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