LT8609AHMSE16#PBF

Voltage - Output (Min/Fixed):	0.782V
Base Part Number:	LT8609
Supplier Device Package:	16-MSOP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	200kHz ~ 2.2MHz
Current - Output:	2A
Voltage - Output (Max):	42V
Series:	--
Voltage - Input (Max):	24V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The LT8609AHMSE16#PBF is an integrated DC/DC switching regulator in a 4x4x0.8mm LGA-16 package. This product line can be used in a wide range of applications including battery applications, display panels, and power systems. In addition, the product can be employed in many industrial, automotive and other applications.

Product Overview

The LT8609AHMSE16#PBF is a completely integrated power switch with a wide range of input and output voltages for improved efficiency and performance. It offers excellent efficiency and low quiescent current in a low-profile 4x4x0.8mm LGA-16 package. The device is a synchronous monolithic buck regulator and can operate from input voltages up to 16V. It can deliver a programmable output current up to 500mA with output voltage adjustable from 0.8V to 5.25V.

Application Field and Working Principle

The LT8609AHMSE16#PBF can be used in battery-powered applications to efficiently convert input voltage to a regulated output voltage. It is designed for applications such as digital still cameras, PDAs, cell phones, Bluetooth® devices, and other portable optical equipment. The device is ideal for applications that require high efficiency, low noise and low quiescent current. The device operates by using the input voltage and a reference voltage to control the output voltage. A unique low-resistance MOSFET switch is used to regulate the output voltage. The device remains in a low quiescent current mode until the output voltage drops below a predetermined threshold, at which point the synchronous rectifier begins to switch, slowly increasing the output voltage until the regulated output is reached. In addition, the LT8609AHMSE16#PBF incorporates a unique current limit threshold which ensures that the output voltage remains within a specified range regardless of the load or the input voltage.

Key Features

The LT8609AHMSE16#PBF offers several important features that make it suitable for a wide range of applications. These include:

• Wide input supply voltage range of 2.6V to 16V
• Programmable output voltage range of 0.8V to 5.25V
• Up to 500mA output current
• Low quiescent current of 33µA in standby mode
• High efficiency of up to 97%
• Thermal protection with hysteresis
• Low dropout of 280mV at 2A
• Integrated switching FETs and control logic
• Programmable soft start and current limit

Package Options

The LT8609AHMSE16#PBF is available in a 4x4x0.8mm LGA-16 package. The device is also available in 14-lead SO, TSSOP, and DFN packages.

Conclusion

The LT8609AHMSE16#PBF DCDC switching regulator is an ideal solution for battery-powered applications such as digital still cameras, PDAs, cell phones, Bluetooth® devices, and other portable optical equipment. It is a widely used product that offers high efficiency, low noise, and low quiescent current in a small form factor. In addition, the device offers a wide range of input and output voltage options, as well as a unique current limit threshold. Furthermore, this device is available in several different packages to fit the needs of any application.

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