LP87524BRNFTQ1 Integrated Circuits (ICs)

Voltage - Input (Max):	5.5V
Supplier Device Package:	26-VQFN-HR (4.5x4)
Package / Case:	26-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	4MHz
Current - Output:	10A
Voltage - Output (Max):	3.36V
Voltage - Output (Min/Fixed):	0.6V
Series:	--
Voltage - Input (Min):	2.8V
Number of Outputs:	4
Output Type:	Programmable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LP87524BRNFTQ1 is a switching regulator manufactured by Texas Instruments. It is a Dual-Phase Step-Down DC-DC Controller designed to provide a regulated voltage supply with minimal external components. The device targets high-performance computing, telecommunications, industrial, and automotive PMIC applications.

LP87524BRNFTQ1 Features

• Supports current-mode control
• Integrated high-side and low-side switching MOSFETs
• Two-phased current-mode topology
• Programmable operating frequency
• Programmable operating temperature
• Programmable PWM/PSM modulationwidth
• Internal compensation
• Low switching loss
• Capable of driving up to 10A of total current
• Occupies 2mm x 2mm QFN package

LP87524BRNFTQ1 Application Fields

LP87524BRNFTQ1 is ideal for many applications including telecom baseband reference supplies, wireless LAN, high-performance computing (HPC), gaming PC, and other communications applications, industrial and automotive PMIC and consumer applications such as LCD TVs and notebooks.

LP87524BRNFTQ1 Working Principle

The LP87524BRNFTQ1 is a dual phase synchronous step-down DC/DC controller designed to convert high input voltage to low output voltage, typically with minimal external components. The device operates in two phases, with two synchronous outputs to reduce peak current and minimize capacitor size. When the device is first energized, the current in the two output phases is equal but out of phase. This ensures equal conduction losses for each phase and helps reduce the temperature of the LP87524BRNFTQ1 device. Each switcher has an internal sliding frequency generator that permits dynamic phase addition in PWM and PSM modes, resulting in very efficient operation over wide output current ranges. The switching frequency is adjustable by a single external resistor and can be adjusted from 50kHz to 500kHz. The device has an internal under-voltage lockout (UVLO) on the inputs and a programmable over-voltage lockout (OVLO) on the outputs. The LP87524BRNFTQ1 is equipped with internal 1A low-side and 2A high-side MOSFETs that minimize requirements for external discrete components. In addition, internal compensation allows for fast transient responses and good regulator stability with minimal external components.

Conclusion

The LP87524BRNFTQ1 is a highly efficient synchronous step-down DC/DC controller designed to provide a regulated voltage supply with minimal external components. It is designed for communications, industrial and automotive PMIC, and consumer applications such as LCD TVs, notebooks and gaming PC. It is also equipped with an adjustable switching frequency and integrated high-side and low-side MOSFETs, ensuring efficient operation with minimal external components.

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