規格
| 屬性 | 價值 |
| Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature | + 85 C |
| Series | LTC3421 |
| Brand | Analog Devices |
| Product Type | Switching Voltage Regulators |
| Subcategory | PMIC - Power Management ICs |
| Mounting Style | SMD/SMT |
| Operating Supply Current | 12 uA |
| Topology | Boost |
| Output Voltage | 2.4 V to 5.25 V |
| Output Current | 3 A |
| Number of Outputs | 1 Output |
| Input Voltage - Min | 500 mV |
| Input Voltage - Max | 4.5 V |
| Switching Frequency | 3 MHz |
| Delivery Restrictions | Mouser does not sell this product in your region. |
| Package/Case | QFN-24 |
概述
Description
The LTC3421EUF is a high-efficiency, synchronous step-down (buck) DC-DC converter designed for battery-powered applications. It operates from an input voltage range of 2.5V to 5.5V, making it suitable for a variety of power sources, including single-cell lithium-ion batteries. The device delivers an output current of up to 1A while maintaining a high efficiency, often exceeding 90%.
Key features include a low quiescent current, which is beneficial for extending battery life in portable devices, and a compact package (3mm x 3mm DFN) that minimizes PCB space. The LTC3421EUF incorporates a built-in power switch, reducing the need for external components and simplifying the design process.
With a switching frequency of up to 2MHz, it allows for smaller inductors and capacitors, enhancing overall circuit miniaturization. The device also offers excellent transient response and includes features such as overcurrent protection and thermal shutdown for reliability. Overall, the LTC3421EUF is ideal for applications including handheld devices, IoT, and portable electronics.
Key features include a low quiescent current, which is beneficial for extending battery life in portable devices, and a compact package (3mm x 3mm DFN) that minimizes PCB space. The LTC3421EUF incorporates a built-in power switch, reducing the need for external components and simplifying the design process.
With a switching frequency of up to 2MHz, it allows for smaller inductors and capacitors, enhancing overall circuit miniaturization. The device also offers excellent transient response and includes features such as overcurrent protection and thermal shutdown for reliability. Overall, the LTC3421EUF is ideal for applications including handheld devices, IoT, and portable electronics.
Equivalent
Equivalent products for the LTC3421EUF chip include the TPS63000 from Texas Instruments, the MAX756 from Maxim Integrated, and the MICREL MICROCHIP MCP1640. These alternatives share similar features, such as step-up DC-DC conversion capabilities and efficiency, but be sure to check specifications for compatibility with your application requirements.
Features
The LTC3421EUF is a high-efficiency, synchronous step-down DC/DC converter designed for low-voltage applications. Key features include:
1. Wide Input Voltage Range: Operates from 2.5V to 15V, accommodating various power sources.
2. Output Current Capability: Delivers up to 1A output current, suitable for powering microcontrollers and other devices.
3. High Efficiency: Achieves efficiencies exceeding 95% under typical conditions, reducing heat generation and extending battery life.
4. Low Quiescent Current: Features low quiescent current for improved performance in battery-powered applications.
5. Adjustable Output Voltage: Output voltage can be set from 0.8V to 12V, providing flexibility for different applications.
6. Built-in Soft-Start: Reduces inrush current during startup, enhancing system reliability.
7. Overcurrent Protection: Integrated protection features prevent damage to the device and connected loads.
8. Small Package Size: Available in a compact 3mm × 3mm DFN package, ideal for space-constrained designs.
These features make the LTC3421EUF suitable for portable electronics, LED drivers, and other applications requiring efficient power conversion.
1. Wide Input Voltage Range: Operates from 2.5V to 15V, accommodating various power sources.
2. Output Current Capability: Delivers up to 1A output current, suitable for powering microcontrollers and other devices.
3. High Efficiency: Achieves efficiencies exceeding 95% under typical conditions, reducing heat generation and extending battery life.
4. Low Quiescent Current: Features low quiescent current for improved performance in battery-powered applications.
5. Adjustable Output Voltage: Output voltage can be set from 0.8V to 12V, providing flexibility for different applications.
6. Built-in Soft-Start: Reduces inrush current during startup, enhancing system reliability.
7. Overcurrent Protection: Integrated protection features prevent damage to the device and connected loads.
8. Small Package Size: Available in a compact 3mm × 3mm DFN package, ideal for space-constrained designs.
These features make the LTC3421EUF suitable for portable electronics, LED drivers, and other applications requiring efficient power conversion.
Pinout
The LTC3421EUF is a micro-power, high-efficiency buck converter from Analog Devices, specifically designed for portable applications. It features a 10-pin (DFN package) design.
Key pin functionalities include:
1. VIN (Pin 1): Input voltage supply.
2. SW (Pin 2): Switch node for inductor connection.
3. GND (Pin 3): Ground reference.
4. VOUT (Pin 4): Output voltage.
5. COMP (Pin 5): Compensation network connection.
6. FB (Pin 6): Feedback input for output voltage regulation.
7. MODE (Pin 7): Mode selection pin for operation (PWM/Power Save).
8. Rset (Pin 8): Resistor connection for setting output voltage.
9. SS (Pin 9): Soft-start pin for time delay at startup.
10. VIN (Pin 10, optional): Additional input for voltage sensing.
The LTC3421EUF supports applications requiring low quiescent current and high efficiency across various load conditions.
Key pin functionalities include:
1. VIN (Pin 1): Input voltage supply.
2. SW (Pin 2): Switch node for inductor connection.
3. GND (Pin 3): Ground reference.
4. VOUT (Pin 4): Output voltage.
5. COMP (Pin 5): Compensation network connection.
6. FB (Pin 6): Feedback input for output voltage regulation.
7. MODE (Pin 7): Mode selection pin for operation (PWM/Power Save).
8. Rset (Pin 8): Resistor connection for setting output voltage.
9. SS (Pin 9): Soft-start pin for time delay at startup.
10. VIN (Pin 10, optional): Additional input for voltage sensing.
The LTC3421EUF supports applications requiring low quiescent current and high efficiency across various load conditions.
Manufacturer
The LTC3421EUF is manufactured by Analog Devices, Inc. (ADI), a leading global semiconductor company. Analog Devices specializes in the design and manufacturing of high-performance analog, mixed-signal, and digital signal processing integrated circuits (ICs). The company serves a wide range of industries, including automotive, communications, healthcare, industrial automation, and consumer electronics.
Founded in 1965, ADI is known for its innovative solutions in signal processing and power management, among other areas. The LTC3421EUF, specifically, is a step-down (buck) DC-DC converter that offers efficiencies and performance suitable for battery-powered applications and portable devices. ADI's focus on precision and performance in its products makes it a key player in the semiconductor industry, catering to the evolving needs of technology across various sectors.
Founded in 1965, ADI is known for its innovative solutions in signal processing and power management, among other areas. The LTC3421EUF, specifically, is a step-down (buck) DC-DC converter that offers efficiencies and performance suitable for battery-powered applications and portable devices. ADI's focus on precision and performance in its products makes it a key player in the semiconductor industry, catering to the evolving needs of technology across various sectors.
Application
The LTC3421EUF is a step-down (buck) DC-DC converter primarily used in battery-powered devices. Its application areas include:
1. Portable Electronics: Smartphones, tablets, and wearable devices.
2. Battery Management Systems: Power regulation for Li-ion and Li-polymer batteries.
3. Industrial Equipment: Power supply for sensors and control circuits.
4. IoT Devices: Energy-efficient power management for connected devices.
5. Consumer Electronics: Powering cameras, audio devices, and gaming consoles.
Its high efficiency, low quiescent current, and compact size make it suitable for diverse applications requiring reliable power conversion.
1. Portable Electronics: Smartphones, tablets, and wearable devices.
2. Battery Management Systems: Power regulation for Li-ion and Li-polymer batteries.
3. Industrial Equipment: Power supply for sensors and control circuits.
4. IoT Devices: Energy-efficient power management for connected devices.
5. Consumer Electronics: Powering cameras, audio devices, and gaming consoles.
Its high efficiency, low quiescent current, and compact size make it suitable for diverse applications requiring reliable power conversion.
Package
The LTC3421EUF is packaged in a 6-lead DFN (Dual Flat No-lead) package, specifically measuring 2mm x 2mm. This compact package type is designed for surface mounting and is ideal for applications with limited space.
