AP2127K-3.0TRG1

Voltage Dropout (Max):	0.3V @ 300mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	68dB ~ 54dB (100Hz ~ 10kHz)
Current - Quiescent (Iq):	90µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AP2127K-3.0TRG1 Application Field and Working Principle

AP2127K-3.0TRG1 is a low voltage and low consumption linear voltage regulator that is suitable for a variety of 2-cell lithium-ion battery powered applications, including gaming consoles, tablets, mobile phones and other portable applications.The regulator is able to stabilize the output voltage across an input voltage range from 2.6V up to 6V and provide a load current of up to 2A. It features a low output tracking error, a high efficiency and fast transient response.

Functional Overview

The AP2127K-3.0TRG1 (Linear voltage regulator) is a monolithic integrated circuit (IC) with four independent outputs.Each output has two independent and different type of functions, which can be identified as follows: a constant voltage output (HVOUT) and a reference voltage output (LVOUT).The separated outputs were designed mainly to provide two distinct output power requirements and enable a high-precision and adjustable output voltage adjustment.

Constant Output Mode

The constant output mode provides a steady voltage output and is ideal for powering low-noise and low-noise-sensitive circuits. This feature can save power and extend the life of the battery in various applications.The output voltage is adjustable from 2.6V to 6V and is regulated by external resistors connected from the HVOUT and LVOUT pins. The value of the resistor is calculated as:R = (Vout - Vref)/IoutWhere,Vout = The desired Output VoltageVref = The reference Voltage (3.3V)Iout = The maximum output current

Reference Output Mode

The reference output mode provides a reference voltage and is used to power specific sensitive circuits, such as those in low-noise and low-power-level applications.The output voltage is adjustable from 1.0V to 3.3V and is regulated by resistors connected from the LVOUT pin to ground or to the HVOUT pin. The value of the resistor is calculated as:R = (Vref - Vout)/IoutWhere,Vout = The desired Output VoltageVref = The reference Voltage (3.3V)Iout = The maximum output current

Operation

The device works in a form of current amplification. In simple terms, the AP2127K-3.0TRG1 takes the input voltage and amplifies it linearly, so that the output voltage is larger than the input voltage.The output voltage is determined by the value of the external resistor connected from the HVOUT and LVOUT pins, which can be adjusted to customize the output voltage for the individual application requirements.The device is able to operate over a wide input voltage range from 2.6V to 6V and provides a maximum load current of up to 2A.

Performance

The AP2127K-3.0TRG1 offers excellent transient response performance, enabling the device to maintain high accuracy output voltage over the entire load range.The device has a very low output tracking error and a high switching frequency that ranges from 200KHz to 1MHz.Moreover, the device offers a high efficiency that ranges up to 90%.

Conclusion

The AP2127K-3.0TRG1 is a low voltage and low consumption linear voltage regulator suitable for various 2-cell lithium-ion battery powered applications, such as gaming consoles, tablets, mobile phones and other portable devices.It features an adjustable output voltage range from 2.6V to 6V, a low output tracking error, a high efficiency and fast transient response. Additionally, it offers excellent performance in terms of output accuracy and current stability.

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