LTC3417AEDHC

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LTC3417AEDHC

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Switching Voltage Regulators LTC3417A - Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator

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仕様

属性

概要

Description

The LTC3417AEDHC is a high-efficiency, dual synchronous step-down DC/DC converter designed by Analog Devices. It is tailored to provide two independent outputs with excellent transient response and high efficiency for a wide range of input voltages. The device is capable of delivering up to 1.5A per channel while operating from an input voltage range of 2.25V to 5.5V, making it suitable for battery-powered applications. The LTC3417AEDHC employs a current mode control architecture, ensuring fast transient response and easy loop compensation. It supports a programmable switching frequency from 1MHz to 4MHz, which allows designers to optimize the trade-off between efficiency and external component size.
The converter also features internal synchronous rectification, which enhances efficiency by reducing power loss. Additional features include a low dropout operation, internal soft start, and power good indicators. It is packaged in a compact 4mm x 4mm QFN package, making it ideal for space-constrained applications. This component is commonly used in portable electronics, distributed power systems, and other applications requiring high efficiency and compact design.

Equivalent

The LTC3417AEDHC is a dual synchronous step-down DC/DC converter from Analog Devices (formerly Linear Technology). Equivalent products from other manufacturers include:
1. Texas Instruments TPS54286 - Dual Synchronous Buck Converter.
2. On Semiconductor NCP81253 - Dual Buck Controller.
3. Microchip Technology MCP16331 - Step-Down Regulator (though not dual, it's similar in function).
Specific requirements like input voltage, output current, and package type should be considered when selecting an equivalent.

Features

The LTC3417AEDHC is a dual synchronous step-down DC/DC converter specifically designed for portable electronics. It operates efficiently from a 2.25V to 5.5V input voltage range, making it ideal for single-cell Li-Ion or multicell alkaline/NiMH applications.
Key features include:
- Dual Output: It provides two independent outputs, capable of delivering up to 1A each.
- High Efficiency: Operates with efficiencies up to 95% to prolong battery life.
- Frequency Synchronization: Offers a selectable switching frequency from 1.5MHz to 4MHz, allowing trade-offs between efficiency and component size.
- Low Noise: Features a low output ripple, making it suitable for noise-sensitive applications.
- Current Mode Operation: Ensures fast transient response and easy loop compensation.
- Compact Design: Available in a compact 4mm x 4mm QFN package, supporting space-constrained designs.
- Power-Saving: Includes Burst Mode operation to improve efficiency at light loads.
- Protection: Comes with over-temperature and short-circuit protection.
These features make the LTC3417AEDHC well-suited for a variety of portable devices and applications requiring efficient power management.

Pinout

The LTC3417AEDHC is a dual, high-efficiency, step-down DC/DC converter with an integrated power switches, designed to provide two independent voltage outputs. It is housed in a 24-lead (pin) 4mm x 5mm DFN package. The LTC3417A operates with an input voltage range from 2.25V to 5.5V, making it suitable for single-cell Li-ion, multicell alkaline/NiMH/NiCd, and other standard power sources.
Key pin functions include:
- VIN1 and VIN2 (Pins 1 and 2): Input voltage supply for the two converters.
- SW1 and SW2 (Pins 3 and 4): Output switching nodes for each converter.
- FB1 and FB2 (Pins 5 and 6): Feedback inputs for setting the output voltage.
- RUN1 and RUN2 (Pins 7 and 8): Enable pins for the converters.
- PGOOD1 and PGOOD2 (Pins 9 and 10): Power good indicators.
- GND (Pin 11): Ground connection.

Additional pins are for compensation, soft-start, and mode selection. This device is used in applications requiring efficient voltage conversion and regulation, such as portable electronics.

Manufacturer

The LTC3417AEDHC is manufactured by Analog Devices, Inc. This company is a leading global technology firm specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. Analog Devices serves various industries, including communications, automotive, industrial, and consumer electronics, providing solutions that are essential for managing power, amplifying, converting, and processing analog signals.

Application

The LTC3417AEDHC is a dual step-down DC/DC converter commonly used in applications requiring efficient power management for portable electronic devices. Its primary application areas include smartphones, tablets, and handheld devices, where it efficiently manages battery power and extends battery life. Additionally, it is used in telecommunications equipment, automotive electronics, and industrial systems for voltage regulation. The device's compact design and high efficiency make it suitable for applications with space constraints and those requiring low power consumption. Its ability to provide dual outputs also makes it ideal for multi-rail power systems.

Package

The LTC3417AEDHC is a dual synchronous step-down DC/DC converter typically packaged in a 4mm x 4mm 24-lead DFN (Dual Flat No-Lead) package. This package type is known for its compact size and efficient thermal performance, making it suitable for space-constrained applications.

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