LTC3564EDCB#TRPBF

Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	LTC3564
Supplier Device Package:	6-DFN (2x3)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.25MHz
Current - Output:	1.25A
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.5V
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 LTC3564EDCB#TRPBF is a DC-DC switching regulator from Linear Technology. It is a step-up converter optimized for mobile applications and is designed to provide a compact solution for high load current, high efficiency, and low quiescent current. This device\'s design and feature set provides high efficiency, low output ripple over a wide range of operating frequencies, and a minimum output voltage of 0.60V, making it suitable for use in applications requiring accurate regulation and a wide output range.

Application Field

The LTC3564EDCB#TRPBF is a very versatile and efficient DC-DC switching regulator. It can be used in applications such as automotive and other low-power systems, battery management systems, Wi-Fi, cellular and Wearables, Internet of Things, and medical monitoring. This device is also ideal for applications requiring simple and accurate power conversion. Its low quiescent current and high regulating efficiency allow for extended battery life when used in portable and low-power applications. Additionally, its wide input voltage range (2.7V to 5.5V) and wide output voltage range (0.6V to 5.5V) make it suitable for use in a variety of applications.

Working Principle

The LTC3564EDCB#TRPBF is a step-up DC-DC switching regulator, which makes use of pulse-width-modulated (PWM) control of power MOSFETs to achieve high efficiency. The device utilizes a two-stage architecture consisting of a low-side N-channel MOSFET and a high-side P-channel MOSFET, as well as an onboard error amplifier. The switching frequency of the regulator can be controlled via either a resistor divider or a front-end microcontroller, and the output voltage is set by an external feedback resistor. The regulator works by generating a clock signal and charging an internal capacitance (usually through a resistor) until the voltage on the capacitor equals the voltage at the feedback node of the regulator. This voltage is compared to an internal reference voltage. If the voltage on the feedback node is higher than the reference, the MOSFETs are switched off and current is not allowed to flow. If the voltage at the feedback node is lower than the reference, the MOSFETs are shunted and current flows, allowing power to be transferred to the output. The LTC3564EDCB#TRPBF is also designed to protect against over-current, over-voltage, and over-temperature conditions in order to ensure reliable operation. An internal 0.5A current limit is set on the low side MOSFET, and an over-voltage protection (OVP) circuit is implemented to detect voltage spikes. Additionally, an overtemperature protection (OTP) circuit has been integrated to ensure that the device does not become too hot during operation.

Conclusion

The LTC3564EDCB#TRPBF is an efficient and reliable DC-DC switching regulator from Linear Technology. It is capable of low output ripple, a wide output voltage range, and a wide input voltage range. Its automatic protection circuits and its two-stage architecture make it ideal for applications requiring accurate regulation and a high level of protection.

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