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 > AT9452

5.5V 1A 1.5MHz 5.5V Synchronous Step-Down Regulator AT9452

Part #	5-9 PCs	10-49 PCs	50-99 PCs	100-499	500-999	≥100 PCs	Buy Now	Datasheet
AT9452	$0.49	$0.47	$0.45	$0.43	$0.41	$0.39			0

Part Number	Unit Price	Datasheet
AT9452	$0.49

FEATURES

Input Voltage Range: 5V to 40V
500mΩ Internal Power MOSFET
1.8MHz Fixed Switching Frequency
Internally Compensated
Stable with Ceramic Output Capacitors
Internal Soft-start
Precision Current Limit without Current Sensing Resistor
High Efficiency: >90%
230μA Operating Quiescent Current
Low Shutdown Mode Current: <2μA
ESOP8 Package

DESCRIPTION:

The AT9452 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves a 1.0A peak-output current over a wide input voltage range. Current mode operation provides a fast transient response and eases loop stabilization. The wide input voltage range (5V to 40V) provides high efficiency output of 1.0A current. Low shutdown mode quiescent current of 2mA (or less) is suitable for battery-powered applications. High efficiency at light load condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses. The frequency folding technique helps prevent the inductance current from running out of control at startup. Hot shutdown provides reliable, fault tolerant operation.