LTC3834EUFD#PBF

Frequency - Switching:	250kHz ~ 530kHz
Base Part Number:	LTC3834
Supplier Device Package:	20-QFN (5x4)
Package / Case:	20-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Phase Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99.4%
Series:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 36 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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The LTC3834EUFD#PBF is a current mode DC/DC controller with a synchronous current-mode PWM (pulse-width modulation) architecture that is suitable for a wide range of applications. It offers a wide input voltage range of 3V to 24V and can operate at a switching frequency of up to 500kHz. The LTC3834EUFD#PBF also features an internal soft start circuit, power-good indicator, programmable switching frequency, input under/over voltage lockout, and comprehensive fault protection with thermal shutdown and over/under voltage protection.The LTC3834EUFD#PBF is a switcher controller with three integrated MOSFET drivers for a synchronous buck topology. The LTC3834EUFD#PBF accepts a wide input voltage range from 3V to 24V and provides programmable output voltage from 0V to 95% of the input voltage. Output voltage regulation is achieved by Pulse width Modulation (PWM), and is adjusted by the internal error amplifier, which compares the output voltage to an external reference voltage. The constant on-time current mode control scheme used in the LTC3834EUFD#PBF provides fast transient response and good line and load regulation.The LTC3834EUFD#PBF provides an internal soft start circuit, which allows the output voltage to ramp up slowly when power is first applied. There is also an adjustable over-current protection (OCP) function that prevents the MOSFETs from over-heating in the event of a short circuit or overload. Furthermore, the device also has a power-good output signal, which indicates when the output voltage is within regulation.The LTC3834EUFD#PBF provides protection for the external MOSFETs by monitoring their current and calculating the resistance of the inductor. If the current reaches a predetermined threshold, the MOSFETs are shut down to prevent damage to the external components. Additionally, the LTC3834EUFD#PBF features input under-voltage and over-voltage protection as well as an adjustable thermal shut-down circuit that can be used as an over-temperature protection.In summary, the LTC3834EUFD#PBF is a DC/DC controller that can be used in a wide range of applications. It features integrated MOSFET drivers, an internal soft start circuit, adjustable over-current protection, power-good output signal, and comprehensive fault protection with thermal shut-down and under/over voltage protection. This makes it an ideal solution for current mode DC/DC switching applications.

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