LT8390AEFE#TRPBF

Frequency - Switching:	645kHz ~ 2.1MHz
Base Part Number:	LT8390
Supplier Device Package:	28-TSSOP
Package / Case:	28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	95%
Series:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 60 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck-Boost
Output Configuration:	Positive
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionThe LT8390AEFE#TRPBF is an advanced DC-DC switching controller which integrates many essential components in a single device. It is designed to provide a cost-effective, yet robust solution for DC-DC conversion applications. This device has been designed with an innovative control methodology that enables it to offer excellent system performance with low ripple voltage and low noise. The wide 4V - 42V input voltage range makes this device suitable for a variety of DC-DC conversion applications. This device also includes numerous protection features, such as under-voltage lockout, load short-circuit protection, and thermal protection, to ensure reliable system operation.Application FieldsThe LT8390AEFE#TRPBF is an ideal solution for DC-DC conversion in a wide range of applications. It can be used in battery operated portable devices, such as cell phones and PDAs, to provide an efficient power supply. It is also suitable for data storage, telecom, and industrial applications, where a cost-efficient, yet reliable power supply is needed.FeaturesThe LT8390AEFE#TRPBF has a wide input voltage range of 4V - 42V, making it suitable for a variety of DC-DC conversion applications. It has an integrated high-voltage switch, which enables it to provide a wide-range of output voltages, up to 700V, with excellent line and load regulation. This device also includes several protection features, such as under-voltage lockout, and load short-circuit protection, to ensure reliable system operation. Other features include current-mode control with extern adjustable soft-start and adjustable frequency.Working PrincipleThe working principle of the LT8390AEFE#TRPBF is based on current-mode control with external adjustable soft-start and adjustable frequency. It uses an adjustable internal oscillator to generate the pulse-width-modulated (PWM) signal that controls the internal NFET switch, which is connected to the output voltage. The frequency of the PWM signal can be adjusted using an external capacitor to tailor the response of the switching controller to the specific application requirements. The PWM signal is also compared with an internal analog control signal to regulate the sweep width, allowing the controller to regulate the output voltage.The LT8390AEFE#TRPBF also includes a number of protection features, such as an adjustable under-voltage lockout and a load short-circuit protection, which help to ensure reliable system operation. Additionally, the device includes a thermal protection feature which shuts off the switch if the temperature rises above a certain level.ConclusionThe LT8390AEFE#TRPBF is an advanced, cost-effective DC-DC switching controller which integrates many essential components in a single device. The wide input voltage range and internal NFET switch enable the device to offer a wide range of adjustable output voltages, up to 700V, with excellent line and load regulation. The device also includes numerous protection features, such as adjustable under-voltage lockout and load short-circuit protection, to ensure reliable system operation. It is suitable for a variety of DC-DC conversion applications in the industrial, data storage, and telecom markets.

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