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AMS4123

Advanced Monolithic Systems
Part Number AMS4123
Manufacturer Advanced Monolithic Systems
Description 3A 20V Step-Down Converter + 1A LDO
Published Feb 8, 2017
Detailed Description General Description The AMS4123 combines a 3A Step-Down converter with a 1A LDO in a single SO-8 exposed paddle package....
Datasheet PDF File AMS4123 PDF File

AMS4123
AMS4123

Overview
General Description The AMS4123 combines a 3A Step-Down converter with a 1A LDO in a single SO-8 exposed paddle package.
Both the LDO and Step-Down converter are low ESR, ceramic capacitor output, stable.
The Step-Down converter is internally compensated with internal soft-start to minimize the number of external components.
An Enable pin provides built-in externally programmable power-up sequencing.
The Step-Down converter enable threshold is 2.
0V and the LDO enable threshold is 2.
5V.
It also has hiccup current limit and thermal protection.
Thermal protection shuts down both the Step-Down converter and LDO when the die temperature exceeds 135°C.
Both regulators are adjustable using a 0.
6V reference for low output voltage settings.
The LDO has options for fixed output voltages from 0.
6V to 5V in 100mV steps.
The LDO external input can be powered from the Step-Down converter output, for improved efficiency, or from any voltage source that is less than or equal to the device supply volt...


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