ST1S40IPHR

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	ST1S40
Supplier Device Package:	8-HSOP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	850kHz
Current - Output:	3A
Voltage - Output (Max):	18V
Series:	--
Voltage - Input (Max):	18V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The ST1S40IPHR DC-DC switching regulator is a highly efficient, low noise, and power efficient solution for a wide range of power supply applications. It operates in three distinct modes: constant-voltage, constant-current, and power-level-controlled. The constant-voltage mode is used for a variety of IoT, RF circuits, and handheld devices; it simplifies system design by providing a constant voltage while modulating the input voltage. The constant-current mode of operation can be used to provide higher power output than the typical voltage regulator can. The power-level control mode allows for the efficient delivery of the desired output level with minimal power loss. This DC-DC switching regulator can handle up to 40A of peak current and is capable of providing a stable output voltage at up to 5V.

ST1S40IPHR Application Field

The ST1S40IPHR is designed for a variety of applications, from high-power RF systems to low-current IoT devices. These applications range from home appliances, automotive electronics, industrial applications, and medical instrumentation. One such application is in ultra-low power and high efficiency solar power converters, which require energy efficiency of up to 95%. This switching regulator is also well suited to a variety of high-current, high-power LED applications, where high-quality lighting and a reliable system is required. Other applications include mobile device charging, general LED lighting, and power system applications.

ST1S40IPHR Working Principle

The ST1S40IPHR DC-DC switching regulator operates by switching power at a frequency of up to 500kHz along with a wide operating temperature range. It can also operate under load transients and high step-down ratios. This makes it ideal for low output voltage adjustment and high efficiency.The ST1S40IPHR utilizes pulse-width modulation (PWM) to regulate the output voltage. This type of regulation uses a circuit which switches a predetermined duty cycle at a fixed frequency. The duty cycle is determined by the comparison of the feedback voltage and the reference voltage. Generally, the duty cycle is increased when the output voltage is lower than the reference voltage, and decreased when the output voltage is higher than the reference voltage. This regulation is precise and allows for a wide range of output voltage adjustment.

Advantages of ST1S40IPHR

The ST1S40IPHR has a number of advantages over traditional voltage regulators. By using a switching concept, the ST1S40IPHR operates in 3 distinct modes - constant voltage, constant current and power level control. This allows for efficient operation on a wide range of input supply voltages. It also provides high efficiency and low noise performance, delivering up to 40A of peak current and up to 5V of stable output voltage. Additionally, the ST1S40IPHR DC-DC switching regulator can operate with a wide supply range, from 7V to 20V, providing maximum output power and energy efficiency in a wide range of applications. Besides, the ST1S40IPHR is equipped with a power stage that uses a patented process to create a high-speed, low-jitter switch circuit, allowing for a high-speed output frequency of up to 500 kHz. This not only allows for more efficient operation, but also increases the switching frequency, thereby reducing the overall size of the power supply. This makes the design of the system more cost-effective and efficient.

Conclusion

In conclusion, the ST1S40IPHR DC-DC switching regulator is designed for a wide range of applications, from RF systems to IoT devices. It is well suited to high-current, high power applications, where efficient operation and stable operation are required. It allows for precise regulation and can operate at high frequencies and wide operating temperature range, making it the ideal choice for a wide range of applications.

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