LTC1878EMS8

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LTC1878EMS8

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Спецификации

Package / Case MSOP-8
Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C
Series LTC1878
Brand Analog Devices
Product Type Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
Mounting Style SMD/SMT
Shipping Restrictions Mouser does not presently sell this product in your region.
Operating Supply Current 10 uA
Topology Buck
Output Voltage 800 mV to 6 V
Output Current 600 mA
Number of Outputs 1 Output
Input Voltage - Min 2.65 V
Input Voltage - Max 6 V
Switching Frequency 550 kHz

Обзор

Description

The LTC1878EMS8 is a high-efficiency step-down DC/DC converter designed by Linear Technology, now part of Analog Devices. It is intended for use in portable electronics where space and power efficiency are critical. The device operates with a fixed-frequency, current-mode architecture and can drive loads up to 600mA with excellent line and load regulation. The LTC1878EMS8 features a wide input voltage range, typically from 2.5V to 10V, making it suitable for single- or dual-cell lithium-ion battery-powered applications.
Key features include low quiescent current and Burst Mode operation, which enhance battery life in portable devices by reducing power consumption at light loads. The LTC1878EMS8 also provides low output voltage ripple and requires minimal external components, facilitating a compact solution footprint. Its high efficiency, which can exceed 90% in some configurations, makes it ideal for battery-operated devices such as smartphones, tablets, and other handheld gadgets. The device is available in an MSOP-8 package, which is compact and thermally efficient, supporting ease of integration into various designs.

Features

The LTC1878EMS8 is a high-efficiency, step-down DC/DC converter designed by Linear Technology (now part of Analog Devices). Key features include:
1. Efficiency: It offers high efficiency, due in part to its low quiescent current of approximately 10µA, making it suitable for battery-operated applications.
2. Input Voltage Range: It supports a wide input voltage range typically from 2.5V to 10V, accommodating various power sources.
3. Output: The device can deliver up to 600mA of continuous output current, with a fixed output voltage option or an adjustable output.
4. Switching Frequency: The converter operates at a fixed high frequency of 550kHz, which allows for smaller external components and a compact design.
5. Low Dropout Operation: It features a low dropout operation, extending battery life.
6. Burst Mode Operation: The LTC1878 uses Burst Mode operation to maintain high efficiency at low loads.
7. Thermal Protection: It includes built-in thermal protection and current limiting to ensure reliability.
8. Package: It is available in a compact MSOP-8 package, suitable for space-constrained applications.
These features make the LTC1878EMS8 ideal for portable devices and applications requiring efficient power conversion from various input sources.

Package

The LTC1878EMS8 is an integrated circuit typically housed in an 8-lead MSOP (Mini Small Outline Package). This package is compact, suitable for space-constrained applications, and designed for surface mounting on printed circuit boards (PCBs).

Pinout

The LTC1878EMS8 is a step-down (buck) DC/DC converter from Analog Devices, formerly Linear Technology. It comes in an 8-lead MSOP package. Here is a concise explanation of its pin count and function:
- Pin 1 (RUN/SS): Run Control and Soft-Start Input.
- Pin 2 (VIN): Input Supply Pin, typically connected to a DC voltage source.
- Pin 3 (SW): Switch Node Connection to Inductor.
- Pin 4 (GND): Ground Connection.
- Pin 5 (VFB): Feedback Pin, connected to an external resistor divider network from the output.
- Pin 6 (ISET): Current Limit Set Pin.
- Pin 7 (VOSENSE): Output Voltage Sense Pin.
- Pin 8 (SENSE): Positive Current Sense Input.
The LTC1878EMS8 is designed to provide high efficiency with a current mode operation and is suitable for applications such as portable electronic devices.

Manufacturer

The LTC1878EMS8 is manufactured by Analog Devices, Inc. This company is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. Analog Devices primarily serves industries such as communications, consumer electronics, industrial, automotive, and healthcare. They provide solutions that enable high-performance applications in these sectors, emphasizing precision, advanced technology, and efficient power management.

Application

The LTC1878EMS8 is a step-down switching regulator designed for efficient voltage conversion. Its application areas include portable electronic devices, battery-powered instruments, distributed power systems, and handheld devices, where low power consumption and compact design are crucial. It is well-suited for applications requiring efficient power management with minimal heat generation, such as mobile phones, PDAs, digital cameras, and other compact, battery-operated gadgets.

Equivalent

The LTC1878EMS8 is a step-down DC/DC converter. Equivalent products include:
1. Maxim Integrated: MAX17502
2. Texas Instruments: TPS62125
3. Microchip Technology: MCP16301
4. ON Semiconductor: NCP1117
5. STMicroelectronics: ST1S10
These alternatives may have different specifications, so it's important to compare their datasheets to ensure compatibility with your specific application.

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