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AP3421

BCD Semiconductor
Part Number AP3421
Manufacturer BCD Semiconductor
Description Dual 1.0A Synchronous Step-down Converters
Published Aug 17, 2015
Detailed Description Preliminary Datasheet 1.3MHz, Dual 1.0A Synchronous Step-down Converters AP3421/A/B General Description The AP3421/A/B...
Datasheet PDF File AP3421 PDF File

AP3421
AP3421

Overview
Preliminary Datasheet 1.
3MHz, Dual 1.
0A Synchronous Step-down Converters AP3421/A/B General Description The AP3421/A/B is a fully integrated dual output voltage regulator.
The two converters are current mode and internally compensated.
The converters include integrated control and synchronous rectifier switches.
The outputs are both rated for up to 1A.
Both outputs are adjustable using external resistors.
The step-down converters operate at 1.
3MHz fixed switching frequency under normal load and in a pulse skipping mode for light loads.
The switching clock is shifted 180° for SW2.
The E/S pin provides an enable function and allows the converter to be synchronized to an external clock.
With E/S held low, the AP3421/A/B draws less than 10µA current.
In the start-up sequence, the VO1 output is designed to precede the VO2 output.
The two outputs have controlled start-up sequence.
Power On Reset (POR) function is provided by means of an open-drain output present on the POR pin.
The POR fun...


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