Step-Down DC/DC Converters - Analog Technologies, Inc.

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Analog Technologies, Inc.
1161 Ringwood Ct, #110
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Home > Integrated Circuits > Step-Down DC/DC Converters > AT3408

5.5V 1A 1.5MHz 5.5V Synchronous Step-Down Regulator AT3408

Part #	5-9 PCs	10-49 PCs	50-99 PCs	100-499	500-999	≥100 PCs	Buy Now	Datasheet
AT3408	$0.39	$0.36	$0.33	$0.30	$0.27	$0.24			20

Part Number	Unit Price	Datasheet
AT3408	$0.39

FEATURES

High Efficiency: Up to 96%
2.5V to 5.5V Input Voltage Range
1.5MHz Constant Frequency Operation
No Schottky Diode Required
Low Dropout Operation: 100% Duty Cycle
PFM Mode for High Efficiency in Light Load
Over Temperature Protected
Low Quiescent Current: 40μA
Short Circuit Protection
Inrush Current Limit and Soft Start
1A Continuous Output Current
SOT23-5 Package

DESCRIPTION:

The AT3408 is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makes the AT3408 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.