規格
| 屬性 | 價值 |
| Package / Case | Tube |
| Part Status | Obsolete |
| Function | Step-Up |
| Output Configuration | Positive |
| Topology | Boost |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 0.5V |
| Voltage - Input (Max) | 5V |
| Voltage - Output (Min/Fixed) | 1.5V |
| Voltage - Output (Max) | 5.25V |
| Current - Output | 2A (Switch) |
| Frequency - Switching | 1MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
The LTC3539EDCB is a high-efficiency, synchronous buck-boost DC/DC converter designed to provide a stable output voltage from an input voltage that can be higher, lower, or equal to the output voltage. It features an input voltage range from 2.4V to 5.5V and can deliver up to 2A of output current. The device is particularly suitable for battery-powered applications, as it efficiently manages power in scenarios where the battery voltage varies over time.
Key features of the LTC3539EDCB include a seamless transition between buck and boost modes, ensuring consistent performance across the entire input voltage range. It also incorporates a 2.2MHz fixed frequency operation, which allows the use of small external components and a compact solution footprint. The converter offers low quiescent current to maximize battery life and includes protection features such as over-temperature and over-current protection. The LTC3539EDCB is typically available in a compact 3mm × 2mm DFN package, making it suitable for space-constrained applications.
Key features of the LTC3539EDCB include a seamless transition between buck and boost modes, ensuring consistent performance across the entire input voltage range. It also incorporates a 2.2MHz fixed frequency operation, which allows the use of small external components and a compact solution footprint. The converter offers low quiescent current to maximize battery life and includes protection features such as over-temperature and over-current protection. The LTC3539EDCB is typically available in a compact 3mm × 2mm DFN package, making it suitable for space-constrained applications.
Equivalent
The LTC3539EDCB is a synchronous buck-boost DC/DC converter by Analog Devices. Equivalent products can include:
1. TPS63001 by Texas Instruments - a high-efficiency buck-boost converter.
2. MAX17020 by Maxim Integrated (now part of Analog Devices) - a buck-boost controller.
3. ISL9110 by Renesas Electronics - a high-efficiency buck-boost converter.
Always check the datasheets to ensure compatibility with your specific application requirements.
1. TPS63001 by Texas Instruments - a high-efficiency buck-boost converter.
2. MAX17020 by Maxim Integrated (now part of Analog Devices) - a buck-boost controller.
3. ISL9110 by Renesas Electronics - a high-efficiency buck-boost converter.
Always check the datasheets to ensure compatibility with your specific application requirements.
Features
The LTC3539EDCB is a high-efficiency, synchronous buck-boost DC/DC converter. Key features include:
1. Wide Input Voltage Range: It operates from 2.4V to 5.5V, making it suitable for single-cell Li-ion batteries and multiple alkaline/NiMH cells.
2. Output Voltage Flexibility: It can provide a regulated output voltage from as low as 2.4V to 5.25V.
3. Automatic Buck-Boost Operation: The device transitions seamlessly between buck and boost modes, ensuring a stable output even when the input voltage is above, below, or equal to the output voltage.
4. Efficiency: High efficiency of up to 95% to maximize battery life in portable applications.
5. Programmable Switching Frequency: Allows for optimization between efficiency and component size, typically up to 2MHz.
6. Low Quiescent Current: Features low standby current for extended battery life in low-power applications.
7. Compact Package: Offered in a compact 12-lead DFN package, suitable for space-constrained applications.
These features make the LTC3539EDCB ideal for portable electronics, battery-powered devices, and other applications requiring efficient power regulation over a broad range of input and output conditions.
1. Wide Input Voltage Range: It operates from 2.4V to 5.5V, making it suitable for single-cell Li-ion batteries and multiple alkaline/NiMH cells.
2. Output Voltage Flexibility: It can provide a regulated output voltage from as low as 2.4V to 5.25V.
3. Automatic Buck-Boost Operation: The device transitions seamlessly between buck and boost modes, ensuring a stable output even when the input voltage is above, below, or equal to the output voltage.
4. Efficiency: High efficiency of up to 95% to maximize battery life in portable applications.
5. Programmable Switching Frequency: Allows for optimization between efficiency and component size, typically up to 2MHz.
6. Low Quiescent Current: Features low standby current for extended battery life in low-power applications.
7. Compact Package: Offered in a compact 12-lead DFN package, suitable for space-constrained applications.
These features make the LTC3539EDCB ideal for portable electronics, battery-powered devices, and other applications requiring efficient power regulation over a broad range of input and output conditions.
Pinout
The LTC3539EDCB is a DC/DC step-up converter with a fixed frequency and synchronous rectification, designed to efficiently boost input voltages to a higher output voltage. It is typically housed in a 10-lead 3mm × 2mm DFN (Dual Flat No Leads) package.
The pin count for the LTC3539EDCB is 10 pins, which are used for the following functions:
1. VIN - Input voltage supply.
2. VOUT - Output voltage.
3. SW (2 pins) - Switch node.
4. GND (2 pins) - Ground connection.
5. FB - Feedback input used to regulate the output voltage.
6. SHDN - Shutdown control; when low, the device enters shutdown mode.
7. COMP - Compensation pin for the control loop.
8. RT - Resistor connected to set the switching frequency.
This layout and design allow the LTC3539EDCB to maintain high efficiency across a range of loads and input voltages, suitable for battery-powered applications requiring a higher voltage output while maintaining compact form factor.
The pin count for the LTC3539EDCB is 10 pins, which are used for the following functions:
1. VIN - Input voltage supply.
2. VOUT - Output voltage.
3. SW (2 pins) - Switch node.
4. GND (2 pins) - Ground connection.
5. FB - Feedback input used to regulate the output voltage.
6. SHDN - Shutdown control; when low, the device enters shutdown mode.
7. COMP - Compensation pin for the control loop.
8. RT - Resistor connected to set the switching frequency.
This layout and design allow the LTC3539EDCB to maintain high efficiency across a range of loads and input voltages, suitable for battery-powered applications requiring a higher voltage output while maintaining compact form factor.
Manufacturer
The LTC3539EDCB is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company provides a wide range of products and solutions for various industries, including automotive, communications, consumer electronics, industrial, and healthcare. With a focus on innovation and advanced technology, Analog Devices plays a significant role in enabling efficient signal processing and power management solutions.
Application
The LTC3539EDCB is a high-efficiency synchronous buck-boost DC/DC converter. Its application areas include battery-powered devices, where it extends battery life by efficiently managing power in systems with varying input voltages. It's ideal for portable electronics, handheld instruments, and medical devices that require a stable output voltage despite fluctuations in battery input. Additionally, it's used in automotive applications, industrial sensors, and any system that requires a compact, efficient power solution capable of operating from a wide range of input sources. The converter's ability to seamlessly transition between buck and boost modes makes it versatile for maintaining consistent power delivery.
Package
The LTC3539EDCB is available in a 2mm × 3mm 8-lead DFN (Dual Flat No-Lead) package.
