SP6203EM5-L-3-0/TR

Current - Output:	300mA
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:	67dB (1kHz)
Current - Supply (Max):	330µA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.3V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
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Part Status:	Obsolete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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SP6203EM5-L-3-0/TR Application Field and Working Principle

The SP6203EM5-L-3-0/TR is a single-channel low dropout (LDO) linear voltage regulator from STMicroelectronics. This voltage regulator is specifically designed for applications requiring low quiescent current and low noise. The SP6003EM5-L-3-0/TR features a regulated output voltage of 3.0V and allows output currents up to 900mA and a dropout voltage of only 250mV at nominal loads. It also improves efficiency by enabling true low-power operation and a low ripple coefficient.

Applications

The SP6203EM5-L-3-0/TR is ideally suited for a wide range of applications, including digital audio players, smartphones, tablets, and other power-sensitive applications. It is often used in small- and medium-sized systems with high power density requirements. Additionally, it is suitable for battery-powered applications, such as wireless communication and other portable device applications, for providing the required system power, and providing them with stability and high efficiency.

Features

Some of the features of the SP6203EM5-L-3-0/TR include low quiescent current of 130uA typical and over-current, over-temperature and over-voltage protection. It also has an ultra-low noise output voltage of 10uV and a fast response time of 1ms for a stepwise increase in load current. The device features on-chip reverse current protection to help against reverse voltage or short circuit on the outputs.

Working Principle

The SP6203EM5-L-3-0/TR’s working principle is based on the negative-feedback configuration that is commonly used in regulating linear voltages. It consists of an error amplifier, a P-channel MOSFET, a compensation amplifier, and a voltage reference. The error amplifier senses the difference between the feedback voltage and the reference voltage and produces a signal used to drive a pass transistor. The pass transistor is responsible for supplying the load with current and is usually a P-channel MOSFET connected to the output in series with an output capacitor to provide stability.When the load connected to the output of the regulator requires power, the error amplifier senses the output voltage and the reference voltage, and the error signal increases the switching frequency of P-channel MOSFET. This increases the voltage of the output capacitor and the output voltage. When the output voltage comes out of regulation, the error signal decreases the switching frequency of the P-channel MOSFET, which decreases the output capacitor voltage, thus decreasing the output voltage.

Conclusion

The SP6203EM5-L-3-0/TR is a single-channel linear voltage regulator from STMicroelectronics, designed to provide power to systems or applications requiring low quiescent current and low noise. Its main applications include digital audio players, smartphones, tablets, and other power-sensitive applications. Furthermore, its features include low quiescent current of 130uA typical, over-current, over-temperature and over-voltage protection, ultra-low noise output voltage of 10uV and fast response time of 1ms. Its working principle is based on the negative-feedback loop with error amplifier, P-channel MOSFET, compensation amplifier, and voltage reference.

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