Specifications
| Attribute | Value |
| Package / Case | Tube,Tube |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable (Fixed) |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 14V |
| Voltage - Output (Min/Fixed) | 1.25V (3.3V) |
| Voltage - Output (Max) | 14V |
| Current - Output | 1A |
| Frequency - Switching | 600kHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Overview
Description
The MAX1685EEE is a high-efficiency, step-up DC-DC converter designed by Maxim Integrated, suitable for portable and battery-powered applications. It operates with an input voltage range of 0.7V to 5.5V and can step up to an output voltage as high as 5.5V, making it ideal for single-cell battery devices. The device features an internal MOSFET to reduce the need for external components, thus simplifying the design and minimizing board space. With a high switching frequency (up to 1MHz), it allows the use of small inductors and capacitors. The MAX1685EEE also includes built-in protection features such as current limiting and thermal shutdown. It provides a low quiescent current, extending battery life in portable devices. The device comes in an 8-pin SO or DIP package, offering a compact solution for efficient power conversion. Applications typically involve powering microcontrollers, sensors, and other low-power components in consumer electronics, medical devices, and other portable systems.
Equivalent
The MAX1685EEE is a low-noise, high-efficiency step-up DC-DC converter. Equivalent products include the LT1308 from Analog Devices, the TPS61030 from Texas Instruments, and the MIC2295 from Microchip Technology. These alternatives offer similar functionalities such as boosting low input voltages to higher output voltages while maintaining efficiency and compact design. When considering alternatives, ensure that the specifications like input voltage range, output voltage, and current ratings match your application requirements.
Features
The MAX1685EEE is a step-up DC-DC converter designed by Maxim Integrated. It is compact and efficient, suitable for boosting low voltages to higher levels. Key features include:
1. Output Range: The device can produce output voltages of up to 15V, suitable for powering a variety of electronic devices.
2. Input Voltage: It operates with a wide input voltage range from 0.7V to 5.5V, making it versatile for use with batteries or low-voltage power sources.
3. Efficiency: The MAX1685EEE is known for its high efficiency, often exceeding 90%, which is beneficial for battery-powered applications.
4. Current Output: It can deliver output currents up to 1.5A, supporting power-hungry devices.
5. Low Quiescent Current: With a low quiescent current, it minimizes power consumption when the device is idle, extending battery life.
6. Switching Frequency: The internal oscillator operates at a frequency of 500kHz, enabling the use of small external components.
7. Protection Features: Built-in features include overcurrent protection and thermal shutdown, enhancing reliability and safety.
These features make the MAX1685EEE ideal for portable and battery-operated devices requiring efficient voltage conversion.
1. Output Range: The device can produce output voltages of up to 15V, suitable for powering a variety of electronic devices.
2. Input Voltage: It operates with a wide input voltage range from 0.7V to 5.5V, making it versatile for use with batteries or low-voltage power sources.
3. Efficiency: The MAX1685EEE is known for its high efficiency, often exceeding 90%, which is beneficial for battery-powered applications.
4. Current Output: It can deliver output currents up to 1.5A, supporting power-hungry devices.
5. Low Quiescent Current: With a low quiescent current, it minimizes power consumption when the device is idle, extending battery life.
6. Switching Frequency: The internal oscillator operates at a frequency of 500kHz, enabling the use of small external components.
7. Protection Features: Built-in features include overcurrent protection and thermal shutdown, enhancing reliability and safety.
These features make the MAX1685EEE ideal for portable and battery-operated devices requiring efficient voltage conversion.
Pinout
The MAX1685EEE is a high-efficiency, low-noise, step-up DC-DC converter. It typically comes in a 16-pin TSSOP (Thin Shrink Small Outline Package) with the following pin functions:
1. LX - Inductor connection for the switching node.
2. GND - Ground.
3. FB - Feedback input for voltage regulation.
4. SHDN - Shutdown input to enable/disable the converter.
5. REF - Reference voltage output.
6. COMP - Compensation pin for loop stability.
7. PGND - Power ground for the device.
8. IN - Input voltage supply.
9. SYNC - Allows synchronization to an external clock.
10. SS - Soft-start control to limit inrush current.
11. LBI - Low-battery input for monitoring.
12. LBO - Low-battery output indicator.
13. PGOOD - Power-good indicator output.
14. N.C. (No Connection) - Not internally connected.
15. VCC - Supply voltage for internal circuitry.
16. DRV - Gate drive output for an external MOSFET.
The MAX1685EEE is designed for applications requiring efficient power conversion, with features supporting battery-operated devices due to its low quiescent current and comprehensive protection features.
1. LX - Inductor connection for the switching node.
2. GND - Ground.
3. FB - Feedback input for voltage regulation.
4. SHDN - Shutdown input to enable/disable the converter.
5. REF - Reference voltage output.
6. COMP - Compensation pin for loop stability.
7. PGND - Power ground for the device.
8. IN - Input voltage supply.
9. SYNC - Allows synchronization to an external clock.
10. SS - Soft-start control to limit inrush current.
11. LBI - Low-battery input for monitoring.
12. LBO - Low-battery output indicator.
13. PGOOD - Power-good indicator output.
14. N.C. (No Connection) - Not internally connected.
15. VCC - Supply voltage for internal circuitry.
16. DRV - Gate drive output for an external MOSFET.
The MAX1685EEE is designed for applications requiring efficient power conversion, with features supporting battery-operated devices due to its low quiescent current and comprehensive protection features.
Manufacturer
The MAX1685EEE is manufactured by Maxim Integrated. Maxim Integrated is a company that specializes in the design, development, and manufacture of analog and mixed-signal integrated circuits. The company provides a wide range of products, including power management ICs, interface circuits, sensors, and microcontrollers, serving various industries such as automotive, consumer electronics, communications, and industrial applications.
Maxim Integrated is known for its focus on innovation and delivering high-performance solutions that enable advancements in technology and electronic design. In 2021, Maxim Integrated was acquired by Analog Devices, Inc. (ADI), further expanding ADI's portfolio and market reach in the semiconductor industry. The combination of these two companies aims to enhance their capabilities in providing comprehensive solutions for a broad range of applications and customers.
Maxim Integrated is known for its focus on innovation and delivering high-performance solutions that enable advancements in technology and electronic design. In 2021, Maxim Integrated was acquired by Analog Devices, Inc. (ADI), further expanding ADI's portfolio and market reach in the semiconductor industry. The combination of these two companies aims to enhance their capabilities in providing comprehensive solutions for a broad range of applications and customers.
Application
The MAX1685EEE is a high-efficiency, step-up DC-DC converter designed for battery-powered devices. Its application areas include portable electronics, handheld devices, and battery-operated equipment that require efficient power management. It is suitable for devices needing a boost in voltage from a low-voltage source to extend battery life, such as digital cameras, PDAs, and portable communications devices. The MAX1685EEE's small size and high efficiency make it ideal for compact designs where space and power consumption are critical considerations.
Package
The MAX1685EEE is packaged in a 16-pin QSOP (Quarter-Size Small Outline Package).