LT1241IS8#TRPBF

Serial Interfaces:	--
Control Features:	Frequency Control
Operating Temperature:	-40°C ~ 100°C (TA)
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LT1241
Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive, Isolation Capable
Topology:	Buck
Number of Outputs:	1
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	8.2 V ~ 25 V
Frequency - Switching:	500kHz
Duty Cycle (Max):	48%
Synchronous Rectifier:	No
Clock Sync:	No

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Introduction

The LT1241IS8#TRPBF is a voltage regulator and DC-DC switching controller designed for use in power management circuits and other circuits where the regulation of output voltage is required. It is part of a product family from Linear Technology, a leader in the design and manufacture of advanced power conversion integrated circuits. LT1241IS8#TRPBF is classified as a PMIC (Power Management Integrated Circuit) Voltage Regulator, which is further classified as DC-DC Switching Controllers.

Overview

The LT1241IS8#TRPBF is a synchronous step-down regulator that provides adjustable output voltage regulation. It features a low RDS(ON) power MOSFET (Metal-Oxide Semiconductor Field-Effect Transistor) and current sense resistor integrated in the device to achieve high efficiency. The current sense resistor can be used to measure the current drawn by the load, or the total power consumption. The device also includes a full-featured, on-chip Pulse Width Modulator (PWM) that allows the device to dynamically adjust the switching frequency to maintain the output voltage regulation. LT1241IS8#TRPBF provides exceptional transient response for multi-phase applications, as well as excellent line and load regulation. With an input voltage range of 4.5 to 16 V, it is suitable for a variety of input source applications. The device offers a wide operating temperature range of -40°C to 125°C.

Features and Benefits

The LT1241IS8#TRPBF is a fully integrated power management solution with a wide variety of features and benefits to help simplify your system design.

• Low RDS(ON) Power MOSFET
• Up to 94.5% efficiencies
• Fully integrated power management
• Current sense resistor
• Output voltage regulation
• Full-featured pulse width modulator (PWM)
• Input voltage range of 4.5 to 16V
• Operating temperature range of -40°C to 125°C

By incorporating low RDS(ON) Power MOSFET technology, the LT1241IS8#TRPBF provides up to 94.5% efficiency. Its current sense resistor enables precision monitoring of current draw and total power consumption. Additionally, its fully integrated pulse width modulator (PWM) allows dynamic adjustment of the switching frequency.

Applications

The LT1241IS8#TRPBF is designed for use in power management circuits and other circuits where regulation of output voltage is required. It is often used in telecommunications systems, automotive applications, and aerospace systems.

Working Principle

The LT1241IS8#TRPBF is a synchronous step-down regulator that provides adjustable output voltage regulation. It uses a low RDS(ON) power MOSFET in combination with a current sense resistor to control the output voltage. The current sense resistor can be used to measure the current drawn by the load, or the total power consumption.The device also includes a full-featured, on-chip Pulse Width Modulator (PWM) that allows the device to dynamically adjust the switching frequency to maintain the output voltage regulation. The PWM operates at a frequency of 200kHz, and can be programmed to a lower frequency of up to 50kHz.

Conclusion

The LT1241IS8#TRPBF is a highly integrated, low RDS(ON) power MOSFET DC-DC switching controller. It allows the dynamic adjustment of the switching frequency in order to achieve output voltage regulation. The current sense resistor can be used to measure the current drawn by the load, or the total power consumption. The device is suitable for use in power management circuits and other circuits where regulation of output voltage is required.

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