Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | nanoPower |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 1.8V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 0.7V |
| Voltage - Output (Max) | 3.3V |
| Current - Output | 700mA |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Overview
Description
The MAX38643AENT+T is a compact, high-efficiency, synchronous step-down DC-DC converter designed by Maxim Integrated, now part of Analog Devices. It is optimized for battery-powered applications and portable devices, offering a wide input voltage range from 2.3V to 5.5V. The converter can deliver up to 600mA of output current, making it suitable for powering microcontrollers, sensors, and other low-power components.
Key features include a low quiescent current of 1.7µA, which helps extend battery life, and pin-selectable output voltages, providing design flexibility. The MAX38643AENT+T operates in a forced PWM mode or an automatic PFM/PWM mode, which adjusts automatically for higher efficiency across load conditions. The device includes protection features such as overcurrent protection, thermal shutdown, and short-circuit protection.
This converter comes in a compact, 6-pin, 1.6mm x 2.1mm TDFN package, facilitating ease of integration into space-constrained designs. It is suitable for applications including wearable devices, IoT sensors, and other portable electronics requiring efficient power management solutions.
Key features include a low quiescent current of 1.7µA, which helps extend battery life, and pin-selectable output voltages, providing design flexibility. The MAX38643AENT+T operates in a forced PWM mode or an automatic PFM/PWM mode, which adjusts automatically for higher efficiency across load conditions. The device includes protection features such as overcurrent protection, thermal shutdown, and short-circuit protection.
This converter comes in a compact, 6-pin, 1.6mm x 2.1mm TDFN package, facilitating ease of integration into space-constrained designs. It is suitable for applications including wearable devices, IoT sensors, and other portable electronics requiring efficient power management solutions.
Equivalent
The MAX38643AENT+T is a low-power, high-efficiency synchronous step-down voltage regulator. Equivalent products may include:
1. TPS62740 from Texas Instruments - Ultra-low power buck converter.
2. LTC3621 from Analog Devices - High-efficiency step-down regulator.
3. AP63356 from Diodes Incorporated - Step-down DC-DC converter.
4. MPM3833C from Monolithic Power Systems - Step-down power module.
Ensure to verify specifications to match specific requirements.
1. TPS62740 from Texas Instruments - Ultra-low power buck converter.
2. LTC3621 from Analog Devices - High-efficiency step-down regulator.
3. AP63356 from Diodes Incorporated - Step-down DC-DC converter.
4. MPM3833C from Monolithic Power Systems - Step-down power module.
Ensure to verify specifications to match specific requirements.
Features
The MAX38643AENT+T is a step-down DC-DC converter from Maxim Integrated, designed for high-efficiency power management in compact applications. Key features include:
1. Efficiency: It offers high-efficiency performance, typically up to 96%, which helps in minimizing power loss and enhancing battery life in portable devices.
2. Compact Size: Housed in a small package, the MAX38643AENT+T is suitable for space-constrained applications.
3. Output: It supports a wide output voltage range, adjustable via external resistors, catering to various voltage requirements.
4. Load Capability: The converter can deliver up to 600mA of current, making it ideal for powering moderate loads.
5. Input Voltage Range: It has a broad input voltage range, enhancing its versatility in different power supply scenarios.
6. Quiescent Current: The device features low quiescent current, which is beneficial for extending battery life.
7. Protection Features: It includes overcurrent and thermal protection to ensure reliability and safety in operation.
These features make the MAX38643AENT+T suitable for applications in portable electronics, wearables, and other devices requiring efficient power conversion in a minimal footprint.
1. Efficiency: It offers high-efficiency performance, typically up to 96%, which helps in minimizing power loss and enhancing battery life in portable devices.
2. Compact Size: Housed in a small package, the MAX38643AENT+T is suitable for space-constrained applications.
3. Output: It supports a wide output voltage range, adjustable via external resistors, catering to various voltage requirements.
4. Load Capability: The converter can deliver up to 600mA of current, making it ideal for powering moderate loads.
5. Input Voltage Range: It has a broad input voltage range, enhancing its versatility in different power supply scenarios.
6. Quiescent Current: The device features low quiescent current, which is beneficial for extending battery life.
7. Protection Features: It includes overcurrent and thermal protection to ensure reliability and safety in operation.
These features make the MAX38643AENT+T suitable for applications in portable electronics, wearables, and other devices requiring efficient power conversion in a minimal footprint.
Pinout
The MAX38643AENT+T is a compact, high-efficiency, synchronous step-down DC-DC converter. It features a total of 6 pins. The primary functions of these pins include:
1. IN (Input Voltage): Supplies power to the device; typically ranges from 2.5V to 5.5V.
2. EN (Enable): Used to enable or disable the device; active-high.
3. FB (Feedback): Used to set the output voltage via an external resistor divider.
4. GND (Ground): Common ground connection for the device.
5. LX (Switch Node): Connects to the inductor and is the switching node for the internal power MOSFETs.
6. OUT (Output Voltage): Provides the regulated output voltage.
This converter is suitable for portable devices due to its small size and high efficiency, supporting applications with limited space and power requirements.
1. IN (Input Voltage): Supplies power to the device; typically ranges from 2.5V to 5.5V.
2. EN (Enable): Used to enable or disable the device; active-high.
3. FB (Feedback): Used to set the output voltage via an external resistor divider.
4. GND (Ground): Common ground connection for the device.
5. LX (Switch Node): Connects to the inductor and is the switching node for the internal power MOSFETs.
6. OUT (Output Voltage): Provides the regulated output voltage.
This converter is suitable for portable devices due to its small size and high efficiency, supporting applications with limited space and power requirements.
Manufacturer
The MAX38643AENT+T is manufactured by Analog Devices, Inc. (ADI). ADI is a multinational semiconductor company that specializes in designing and manufacturing a wide range of analog, mixed-signal, and digital signal processing integrated circuits. These products are used in various electronic equipment across industries such as automotive, communication, healthcare, industrial, and consumer electronics. Known for its innovation and high-performance solutions, ADI focuses on enabling next-generation technologies in areas like data conversion, signal processing, power management, and sensing.
Application
The MAX38643AENT+T is a step-down DC-DC converter ideal for applications requiring high efficiency and compact size. It is commonly used in battery-powered devices, such as wearable electronics, portable medical devices, and IoT sensors, due to its low quiescent current and high efficiency at light loads. Its compact design suits space-constrained applications, including smartphones, tablets, and other consumer electronics. Additionally, the converter's wide input voltage range makes it suitable for industrial applications that require reliable performance in varying conditions.
Package
The MAX38643AENT+T is a micro-power buck converter from Maxim Integrated. It comes in a 6-pin TDFN (Thin Dual Flat No Leads) package, which is compact and suitable for space-constrained applications.
