Specifications
| Attribute | Value |
| Package | Tube,Tube |
| ProductStatus | Obsolete |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive or Negative |
| Topology | Boost, Flyback, SEPIC |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 0.8V |
| Voltage-Input(Max) | 28V |
| Voltage-Output(Min/Fixed) | ±0.8V |
| Voltage-Output(Max) | ±28V |
| Current-Output | 500mA |
| Frequency-Switching | 300kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Overview
Description
The MAX629ESA is a step-up DC-DC converter designed by Maxim Integrated. It is part of the MAX629 series, known for its high-efficiency and low-voltage operation. This integrated circuit (IC) features a wide input voltage range, typically from 0.8V to 5.5V, making it suitable for battery-powered applications. The device is capable of delivering a regulated output voltage, with options to adjust the output via external resistors.
Key features include a low quiescent current, which helps in extending battery life, and a high switching frequency that allows for the use of smaller external components. The MAX629ESA also incorporates protections such as over-temperature and over-current protection, enhancing reliability.
The IC is available in an 8-pin SO (Small Outline) package, making it compact and easy to integrate into space-constrained designs. Its typical applications include powering microcontrollers, portable devices, and other battery-operated electronics, where efficient power conversion is critical.
Key features include a low quiescent current, which helps in extending battery life, and a high switching frequency that allows for the use of smaller external components. The MAX629ESA also incorporates protections such as over-temperature and over-current protection, enhancing reliability.
The IC is available in an 8-pin SO (Small Outline) package, making it compact and easy to integrate into space-constrained designs. Its typical applications include powering microcontrollers, portable devices, and other battery-operated electronics, where efficient power conversion is critical.
Equivalent
The MAX629ESA is a step-up DC-DC converter. Equivalent products to consider include the LT1613 from Analog Devices, the MC34063A from ON Semiconductor, and the TPS61041 from Texas Instruments. These alternatives offer similar functionality and can be used in applications requiring step-up voltage conversion. Always verify the specifications and pin compatibility before substituting.
Features
The MAX629ESA is a versatile, high-efficiency, step-up DC-DC converter. It features a wide input voltage range of 0.8V to 12V, making it suitable for single-cell battery applications. The device can deliver output voltages up to 28V and offers a high efficiency of up to 90%, minimizing power loss and heat generation. It is equipped with an internal switch and is capable of delivering up to 500mA of output current.
The MAX629ESA includes an internal current limit and thermal shutdown for enhanced protection. Its low quiescent current (typically 110µA) ensures minimal battery drain in portable applications. The converter supports a fixed-frequency operation for predictable EMI performance.
Available in an 8-pin SOIC package, the MAX629ESA is designed for compact, space-constrained designs. It is well-suited for applications requiring consistent voltage output from a low-voltage source, such as LCD bias supplies, portable devices, and backup power systems.
The MAX629ESA includes an internal current limit and thermal shutdown for enhanced protection. Its low quiescent current (typically 110µA) ensures minimal battery drain in portable applications. The converter supports a fixed-frequency operation for predictable EMI performance.
Available in an 8-pin SOIC package, the MAX629ESA is designed for compact, space-constrained designs. It is well-suited for applications requiring consistent voltage output from a low-voltage source, such as LCD bias supplies, portable devices, and backup power systems.
Pinout
The MAX629ESA is an 8-pin device, primarily used as a high-efficiency, step-up DC-DC converter. Here is a brief overview of its pin functions:
1. Pin 1 (IN): Input Supply Voltage. Connects to the power source.
2. Pin 2 (FB): Feedback. Connects to the output voltage divider to set the output voltage.
3. Pin 3 (SHDN): Shutdown. A low voltage on this pin shuts down the converter, reducing the supply current.
4. Pin 4 (GND): Ground. Common ground reference for all signals.
5. Pin 5 (LX): Inductor Connection. Connects to the inductor and the anode of the Schottky diode.
6. Pin 6 (REF): Reference Voltage Output. Provides a reference voltage for external components.
7. Pin 7 (COMP): Compensation. Connects to a compensation network to stabilize the control loop.
8. Pin 8 (PGND): Power Ground. Separate ground for power connections.
This configuration allows the MAX629ESA to efficiently step up low input voltages to a higher level, suitable for various applications requiring increased voltage.
1. Pin 1 (IN): Input Supply Voltage. Connects to the power source.
2. Pin 2 (FB): Feedback. Connects to the output voltage divider to set the output voltage.
3. Pin 3 (SHDN): Shutdown. A low voltage on this pin shuts down the converter, reducing the supply current.
4. Pin 4 (GND): Ground. Common ground reference for all signals.
5. Pin 5 (LX): Inductor Connection. Connects to the inductor and the anode of the Schottky diode.
6. Pin 6 (REF): Reference Voltage Output. Provides a reference voltage for external components.
7. Pin 7 (COMP): Compensation. Connects to a compensation network to stabilize the control loop.
8. Pin 8 (PGND): Power Ground. Separate ground for power connections.
This configuration allows the MAX629ESA to efficiently step up low input voltages to a higher level, suitable for various applications requiring increased voltage.
Manufacturer
The MAX629ESA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is a company known for designing, manufacturing, and selling analog and mixed-signal integrated circuits. The company, which was founded in 1983, has been a key player in the semiconductor industry and specializes in high-performance components used in a wide range of electronic devices. Their products find applications in areas such as automotive, communications, consumer, industrial, and computing markets. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., a company that also focuses on the design and manufacturing of integrated circuits, including analog, mixed-signal, and digital signal processing (DSP) solutions. Analog Devices is recognized for its innovations in the field of electronics and continues to support and expand the product lines originally developed by Maxim Integrated.
Application
The MAX629ESA is a high-efficiency, step-up DC-DC converter. Its application areas include:
1. Battery-Powered Devices: Used in portable electronics like smartphones, tablets, and wearable devices to boost battery voltage.
2. LED Drivers: Provides efficient power conversion for LED lighting systems.
3. LCD Displays: Supplies the necessary voltage for powering LCD backlights.
4. Power Management Systems: Key component in energy-efficient power supply designs.
5. Wireless Communication Devices: Used in RF applications to maintain consistent voltage levels for transmission.
6. Portable Medical Devices: Ensures reliable power for critical medical equipment.
Its compact size and efficiency make it suitable for any application requiring voltage boost with minimal power loss.
1. Battery-Powered Devices: Used in portable electronics like smartphones, tablets, and wearable devices to boost battery voltage.
2. LED Drivers: Provides efficient power conversion for LED lighting systems.
3. LCD Displays: Supplies the necessary voltage for powering LCD backlights.
4. Power Management Systems: Key component in energy-efficient power supply designs.
5. Wireless Communication Devices: Used in RF applications to maintain consistent voltage levels for transmission.
6. Portable Medical Devices: Ensures reliable power for critical medical equipment.
Its compact size and efficiency make it suitable for any application requiring voltage boost with minimal power loss.
Package
The MAX629ESA is packaged in an 8-pin small outline integrated circuit (SOIC) package.
