規格
| 屬性 | 價值 |
| Package / Case | Bulk |
| Part Status | Active |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Buck-Boost |
| Output Type | Adjustable (Fixed) |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | -1V (-5V) |
| Voltage - Output (Max) | -16V |
| Current - Output | 260mA |
| Frequency - Switching | 300kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
The MAX764ESA is a DC-DC step-up converter integrated circuit designed by Maxim Integrated (now part of Analog Devices). It is specifically tailored for applications requiring efficient voltage boosting, such as powering microcontrollers or other low-voltage digital circuits from a single battery cell. The device can accept input voltages ranging from 0.7V to 5.5V and can boost them to output voltages of up to 16V.
Key features of the MAX764ESA include a low quiescent current, high efficiency, and the ability to deliver up to 300mA of output current. It typically uses a switching frequency of 300kHz, which allows for the use of small external components. The chip also includes features like shutdown capability to conserve power and support for pulse-frequency modulation (PFM) for improved efficiency at low output currents.
Packaged in an 8-pin SOIC, the MAX764ESA is suitable for portable and battery-operated devices, making it a highly versatile component for applications requiring compact and efficient voltage conversion.
Key features of the MAX764ESA include a low quiescent current, high efficiency, and the ability to deliver up to 300mA of output current. It typically uses a switching frequency of 300kHz, which allows for the use of small external components. The chip also includes features like shutdown capability to conserve power and support for pulse-frequency modulation (PFM) for improved efficiency at low output currents.
Packaged in an 8-pin SOIC, the MAX764ESA is suitable for portable and battery-operated devices, making it a highly versatile component for applications requiring compact and efficient voltage conversion.
Equivalent
The MAX764ESA is a step-up DC-DC converter. Equivalent products from other manufacturers include the LT1302 from Analog Devices (formerly Linear Technology), TPS61041 from Texas Instruments, and the MC34063 from ON Semiconductor. These alternatives offer similar functionalities, but differences in specifications such as input voltage range, efficiency, and output current should be reviewed to ensure compatibility with your application. Always consult datasheets for detailed comparisons.
Features
The MAX764ESA is a DC-DC step-up switching regulator designed for high-efficiency power conversion. It provides a set of key features that make it suitable for battery-powered applications and other scenarios requiring efficient voltage boosting:
1. High Efficiency: The device can achieve efficiencies up to 90%, making it ideal for extending battery life in portable devices.
2. Input Voltage Range: It operates with input voltages from 3V to 16.5V, providing flexibility for various power sources.
3. Adjustable Output Voltage: The output voltage is adjustable between 5V and 16.5V, allowing for customization based on specific application requirements.
4. Low Quiescent Current: With a low standby current, it minimizes power consumption when inactive, further conserving battery life.
5. Current Limiting: The built-in current limit feature protects the circuit from overloading conditions.
6. Soft-Start Capability: This feature helps in reducing inrush current during startup, enhancing reliability.
7. Compact Package: Available in an 8-pin SO package, it is suitable for space-constrained designs.
8. Thermal Protection: Includes thermal shutdown to prevent damage from overheating.
These features make the MAX764ESA a versatile and efficient option for step-up voltage regulation in compact, power-sensitive applications.
1. High Efficiency: The device can achieve efficiencies up to 90%, making it ideal for extending battery life in portable devices.
2. Input Voltage Range: It operates with input voltages from 3V to 16.5V, providing flexibility for various power sources.
3. Adjustable Output Voltage: The output voltage is adjustable between 5V and 16.5V, allowing for customization based on specific application requirements.
4. Low Quiescent Current: With a low standby current, it minimizes power consumption when inactive, further conserving battery life.
5. Current Limiting: The built-in current limit feature protects the circuit from overloading conditions.
6. Soft-Start Capability: This feature helps in reducing inrush current during startup, enhancing reliability.
7. Compact Package: Available in an 8-pin SO package, it is suitable for space-constrained designs.
8. Thermal Protection: Includes thermal shutdown to prevent damage from overheating.
These features make the MAX764ESA a versatile and efficient option for step-up voltage regulation in compact, power-sensitive applications.
Pinout
The MAX764ESA is a step-up DC-DC converter. It is typically used for applications requiring efficient voltage boosting from low-voltage sources. The device is available in an 8-pin SOIC package. Here is a brief overview of the pin functions:
1. LX (Pin 1): Inductor connection for the boost converter. It is the switching node where the inductor is connected.
2. GND (Pin 2): Ground pin for the device.
3. OUT (Pin 3): Output voltage pin. It is connected to the output capacitor.
4. REF (Pin 4): Reference voltage output. It typically provides a stable reference voltage for other circuit components.
5. FB (Pin 5): Feedback pin. It is used to set the output voltage by connecting to a resistor divider network.
6. SHDN (Pin 6): Shutdown pin. A logic low on this pin turns off the converter to save power.
7. IN (Pin 7): Input voltage pin for the device.
8. PWR (Pin 8): Power input pin. It provides power for the internal circuitry of the converter.
This concise description should help in understanding the basic pin functions of the MAX764ESA.
1. LX (Pin 1): Inductor connection for the boost converter. It is the switching node where the inductor is connected.
2. GND (Pin 2): Ground pin for the device.
3. OUT (Pin 3): Output voltage pin. It is connected to the output capacitor.
4. REF (Pin 4): Reference voltage output. It typically provides a stable reference voltage for other circuit components.
5. FB (Pin 5): Feedback pin. It is used to set the output voltage by connecting to a resistor divider network.
6. SHDN (Pin 6): Shutdown pin. A logic low on this pin turns off the converter to save power.
7. IN (Pin 7): Input voltage pin for the device.
8. PWR (Pin 8): Power input pin. It provides power for the internal circuitry of the converter.
This concise description should help in understanding the basic pin functions of the MAX764ESA.
Manufacturer
The MAX764ESA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is known for designing and manufacturing analog and mixed-signal integrated circuits. The company specializes in creating high-performance, innovative solutions for a wide range of applications, including power management, interface, communications, and data conversion. As part of Analog Devices, Maxim Integrated contributes to a broader portfolio that serves various industries such as automotive, consumer electronics, industrial, communications, and healthcare. Their products are used in devices and systems that require high efficiency, reliability, and performance.
Application
The MAX764ESA is a charge-pump DC-DC converter IC designed for applications requiring low power and high efficiency. Its application areas include generating negative voltages from positive inputs, making it ideal for powering operational amplifiers, analog-to-digital converters, digital-to-analog converters, and other analog components in portable electronics. It is often used in battery-operated devices, handheld instruments, and systems requiring bipolar power supplies. Additionally, it can be used in telecommunications and networking equipment where efficient power management is necessary. Its low quiescent current and shutdown capability make it suitable for energy-sensitive applications.
Package
The MAX764ESA is a type of integrated circuit packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package. This surface-mount package is commonly used for space-constrained applications, featuring a small footprint and low profile.