CS5171GD8

Voltage - Output (Min/Fixed):	1.28V
Base Part Number:	CS5171
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	280kHz
Current - Output:	1.5A (Switch)
Voltage - Output (Max):	40V (Switch)
Series:	--
Voltage - Input (Max):	30V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Flyback, Forward Converter, SEPIC
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Obsolete
Packaging:	Tube

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PMIC - Voltage Regulators - DC DC Switching Regulators

The CS5171GD8 is DC-DC switching regulator, a power management integrated circuit (PMIC) that can operate in a variety of applications. It is designed to integrate voltage conversion from the input to the output with both high efficiency and power output. In typical applications, CS5171GD8 can handle up to a 90W load with its 100kHz switching frequency.As a power management integrated circuit, the CS5171GD8 has multiple operating levels. Its rated input output voltage differential voltage range is 4.5V- 60V and the allowable power output range is 0.5W-90W. It also supports a continuous current limit range of 1.5A-30A and has a wide adjustable output voltage range. The chip offers very low standby currents when idle and has a low switch on resistance.

Working Principle of CS5171GD8

The core of the CS5171GD8 is a switching regulator. It works by rapidly switching a power device, usually a MOSFET, at a controlled frequency. This device turns the output voltage or current on and off quickly, enabling the chip to convert energy from the input voltage to the desired output voltage.When the chip is enabled, the power switch is enabled and connects the input voltage to the output rail, causing a current to flow through the inductor. This current is then stored in the inductor and as the switch turns off, the current discharges into the output rail, generating a regulated voltage across it. By regulating the switching frequency, the output voltage can be accurately controlled.In addition to its output voltage regulation, the CS5171GD8 also features an integrated current limit loop. This current limit loop senses the current flowing through the inductor and will turn off the power switch when the current reaches a predetermined level. This feature is especially useful in applications where an external load may exceed the maximum current rating of the power switch.Finally, the CS5171GD8 also provides for over-voltage protection and thermal protection, ensuring that the internal components of the chip are not damaged by high voltages or too much heat.

Application of CS5171GD8

The CS5171GD8 switching regulator is designed for a wide range of applications. Its wide input voltage and output voltage ranges, together with its ability to handle up to 90W, makes it suitable for use in applications where high power or large voltage differentials are necessary.In the automotive industry, the CS5171GD8 is used in the powertrain, in applications such as electric vehicle traction motors, electric power steering and exhaust gas recirculation systems. In medical electronics, the CS5171GD8 is used in a variety of applications, where its low standby current and wide voltage differential capabilities are particularly useful, such as patient monitoring systems and X-ray equipment.In the industrial sector, the CS5171GD8 is used in a range of applications, such as in batteries and LED lighting systems, which require efficient and accurate conversion of voltage and current. Other applications that benefit from the CS5171GD8\'s features include solar energy systems and electric vehicle chargers.

Conclusion

The CS5171GD8 switching regulator is a powerful PMIC suitable for use in a range of different applications that require efficient and accurate power conversion. Its wide input/output voltage range, adjustable current limit and wide power output makes it an ideal choice for managing higher power and voltage differentials. Its over-voltage protection and thermal protection capabilities ensure that the chip can safely handle input/outputs without damaging its internal components.

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