ST5R33MTR

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	ST5R*
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 85°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	150kHz
Current - Output:	100mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	0.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to ST5R33MTR DC-DC Switching Regulators

A DC-DC switching regulator is a voltage regulator that is optimized for low power, low noise, and high efficiency. They are used in a variety of applications, including automotive, consumer electronics, and industrial.The ST5R33MTR is a dual-channel, efficient and high-performance DC-DC switching regulator (also known as a buck regulator or buck converter) that is designed to operate over a wide input voltage range. It is a member of ST’s SmartReg® family of regulators and features an adjustable output voltage range from 1.89 V to 17 V, an adjustable maximum output current from 500 mA to 5 A, and it can operate from an input voltage of up to 40 V.The ST5R33MTR is designed for a wide range of applications, including automation, smart grid, lighting, consumer electronics, and portable computing. It is also well suited for IoT, medical and industrial applications that require high-efficiency and high performance.

Different Operating Modes of ST5R33MTR DC-DC Switching Regulators

The ST5R33MTR DC-DC switching regulator can operate in a variety of modes including:1. Pulse width modulation (PWM): PWM is the most common mode of operation for a DC-DC switching regulator. It is characterized by a fixed on/off duty cycle of the switching transistor.2. Pulse Frequency Modulation (PFM): PFM is a variation of PWM where a fixed on/off duty cycle is modulated by changing the frequency instead of the width of the pulse.3. Linear regulator (LDO): An LDO is a regulator capable of varying its output voltage linearly and independently of the input voltage.4. Single mode power supply (SMPS): An SMPS is a power supply that is designed to operate in a single mode, such as PWM or PFM, typically over a wide input voltage range.

Components and Architecture of ST5R33MTR DC-DC Switching Regulators

The ST5R33MTR DC-DC switching regulators are composed of a variety of components, including:1. The main power switch is a power MOSFET that is used to switch on and off the regulator.2. An error amplifier which is used to compare the output voltage to a reference voltage and thus regulate the output voltage.3. Compensation network to ensure stability of the regulator.4. Driver circuits used to control the power switch.5. Inductors used to store the energy during the switch on phase and release it during the switch off phase.6. Output filter to reduce the output noise.7. Input voltage divider to reduce the voltage to be used by the error amplifier.The architecture of the ST5R33MTR switching regulator consists of an integrated power switch and an externally compensated error amplifier. This helps to reduce the number of components and improve efficiency.

Advantages of ST5R33MTR DC-DC Switching Regulators

The ST5R33MTR is highly efficient and has a low standby current (< 1 µA). It also has a wide input voltage range and adjustable output voltage, making it suitable for a wide range of applications. It is also AEC-Q100 qualified, making it suitable for automotive applications.The ST5R33MTR also features a built-in input voltage divider and a low noise, low power error amplifier, making it easier to design with and highly efficient.Overall, the ST5R33MTR is an efficient, low power and low noise DC-DC switching regulator that is designed for a wide range of applications.

Conclusion

The ST5R33MTR DC-DC switching regulator is designed for a wide range of applications and is suitable for automotive, consumer electronics, smart grid, lighting and IoT applications. It has an adjustable output from 1.89 V to 17 V, an adjustable maximum output current from 500 mA to 5 A, and a wide input voltage range of up to 40 V.The ST5R33MTR is highly efficient and has a low standby current (< 1 μA). It also features a built-in input voltage divider and a low noise, low power error amplifier, and is AEC-Q100 qualified, making it suitable for a variety of applications.

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