LTC4402-2EMS#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
RF Type:	Cellular, GSM, GPRS, PCS, Wireless Modem, TDMA
Frequency:	300MHz ~ 2.4GHz
Features:	Dual Output
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	10-MSOP
Base Part Number:	LTC4402

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​ RF power controller ICs help manage and control power in a range of wireless electronic devices. The LTC4402-2EMS#TRPBF is an optimal power controller integrated circuit (IC) solution for devices needing a very low quiescent current and accurate current delivery through efficient power supply regulation. This integrated circuit offers three modes of operation—forced PWM, forced linear, and automatic pulse frequency modulation (PFM/PWM) adjustable via mode pins—along with an adjustable voltage output range from 1.5V to 5.5V. The low quiescent current, tight control of the output voltage, and high efficiency make it an ideal solution for managing power in wearable electronics, wireless communication, automotive telematics, and Internet of Things (IoT) applications.​​This section will discuss the application field and working principle of the LTC4402-2EMS#TRPBF.​1. Application Field ​The LTC4402-2EMS#TRPBF provides ultra-low quiescent current (QC), highly efficient, and accurate voltage regulation for many consumer electronics devices that require a very low voltage range and battery-powered operation. The extremely low standby current of 20nA makes it ideal for battery-powered portable consumer devices, such as wearables and IoT products. ​In automotive telematics and wireless communication, it is used to supply power efficiently in remote receivers. Its high efficiency and low-battery-drain features make it a great solution for automotive telematics systems that require the reliable and continuous powering of remote wireless systems.​Additionally, the LTC4402-2EMS#TRPBF is widely used in wearable technology, such as smart watches and fitness bands, where it provides an accurate DC output for the power-hungry applications such as displays, sensors, and wireless communications.​2. Working Principle ​The LTC4402-2EMS#TRPBF is an adjustable PFM/PWM switch-mode regulating IC with input voltage of 4.5 to 50V and an output voltage of 1.5V to 5.5V that can be set by two selectable pins. ​The IC has three operating modes: forced PWM, forced linear, and automatic PFM/PWM. In the forced PWM mode, the peak current limit is bypassed even when the load demand is low. In the forced linear mode, the peak current limit is respected and the buck regulator generates regulated output voltage without switching action. For the automatic PFM/PWM mode, it senses VOUT and only switches at

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