LTC3807MPFE#PBF

Frequency - Switching:	50kHz ~ 900kHz
Base Part Number:	LTC3807
Supplier Device Package:	20-TSSOP-EP
Package / Case:	20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-55°C ~ 150°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 38 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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LTC3807MPFE#PBF Application Field and Working Principle

LTC3807MPFE#PBF is a PMIC - Voltage Regulators - DC DC Switching Controllers product from Linear Technology. This product features high-efficiency, high current and low dropout integrated Power Distributors. It offers over-current, over-temperature and under-voltage protections. This product also protects against surge over-current and low-battery reset to prevent over start-up and droop conditions.The LTC3807MPFE#PBF is capable of providing output voltages down to 0.75V with currents up to 5A, as well as providing step-up operation, up to 32.5V, when enabled. This product is ideal for point-of-load (POL) applications that require adjustable output voltage and tight regulation, or broader voltage-level ranges, such as in automotive applications.The LTC3807MPFE#PBF utilizes pulse width modulation to control output voltage. A voltage reference voltage is monitored by the device, and the Pulse Width Modulation (PWM) controller actively adjusts its duty cycle as a function of the load to maintain the desired output voltage, allowing for precise voltage regulation.The device also features programmable frequency switching and maximum duty cycle limit. The programmable frequency switching allows the user to adjust the switching frequency to limit output ripple. The maximum duty cycle limit can be adjusted via the Over-Current Protection (OCP) pin and allows for precise current regulation.The LTC3807MPFE#PBF features additional features such as a Power OK pin that indicates when the output voltage is within regulation and a thermal monitor pin. This thermal monitor pin allows for over-temperature protection of the device and prevents power distortion during temperature changes.In addition, the LTC3807MPFE#PBF also provides a Sleep Mode that reduces power dissipation when the load is low. The Sleep Mode also allows for improved transient response of the device in dynamic loads.Overall, the LTC3807MPFE#PBF is a PMIC - Voltage Regulators - DC DC Switching Controllers that allows for precise voltage and current regulation. With features such as a programmable frequency, maximum duty cycle and over-temperature protection, the device offers improved efficiency and protection for point of load applications and broader voltage level ranges in automotive applications.

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