AS13985H28-T

Current - Output:	150mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	60dB ~ 55dB (1kHz ~ 10kHz)
Current - Supply (Max):	250µA
Current - Quiescent (Iq):	130µA
Series:	--
Voltage Dropout (Max):	0.1V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - Linear

The AS13985H28-T is a low-dropout Linear regulator designed to power a wide range of applications with an output voltage ranging from 3.3V to 28V. This regulator is designed to provide regulated output voltage using an external N-channel MOSFET, allowing it to provide a high output current with extremely low dropout voltage and low quiescent current. As a linear regulator, it operates at a very low switching frequency and is suitable for applications such as AC adapters, motor controls, battery management, and automotive applications.The AS13985H28-T has two main components, the control circuit and the MOSFET. The control circuit is comprised of a P-Channel MOSFET and a current source. The P-Channel MOSFET is used to sense the input voltage and adjust the current source accordingly. This allows the device to accurately regulate output voltage with low input voltage variations. The MOSFET, when turned on, provides a low-impedance path for the input current, allowing the regulator to provide output current up to 28V and 2A.The AS13985H28-T operates in one of two modes: PWM Mode or Linear Mode. In PWM Mode, the output voltage is regulated by varying the duty cycle of the MOSFET. This is ideal for applications that require a very fast response time and/or high efficiency. In Linear Mode, the output voltage is regulated by adjusting the current source to compensate for the losses due to the MOSFET. This is best suited for applications where very low noise and excellent line/load regulation is desired.The AS13985H28-T features open circuit and short circuit protection, over temperature protection, current foldback, low standby power consumption, and adjustable output voltage. It also supports a wide operating temperature range from -40°C to 125°C. This makes it an ideal choice for a wide range of automotive, industrial, and consumer applications.In conclusion, the AS13985H28-T is an ideal choice for a wide range of applications that require a high output current with a low dropout voltage and low quiescent current. Its two operating modes, PWM or Linear mode, provide flexibility for a variety of applications in various operating conditions. Its built-in protection and wide operating temperature range make it well suited for harsh environments as well. Its low standby power consumption and adjustable output voltage capabilities make it an ideal choice for a wide range of applications.

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