MAX851 (2)
The MAX851 series is available from Analog Devices at Xecor. Designed for low-noise, regulated, negative charge pump power supplies for GaAsFET bias, the MAX851 series offers features such as a fixed -4.1V or adjustable -0.5V to -9V output at 5mA, a 4.5V to 10V input voltage range, and minimal output voltage ripple of 2mVP-P or 1mVP-P. Available in an 8-SOIC package, it is ideal for applications like cell phones, continuously adjustable GaAsFET bias, LCD-bias contrast control, negative regulated power supplies, personal communicators, PDAs, and wireless data loggers. Whether used in telecommunications or portable electronics, this series ensures reliable performance and efficiency for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX851 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MAX851ISA+ | Switched Capacitor Regulator MAX851ISA+: Operates at a peak switching frequency of up to 120 kHz, encapsulated in PDSO8 | SOIC-8 | 3,314 | |
| MAX851ISA | Switched Capacitor Regulator MAX851ISA+: Operates at a peak switching frequency of up to 120 kHz, encapsulated in PDSO8 | SOIC-Narrow-8 | 5,584 |
Key Featrues
Low Output Voltage Ripple: With output voltage ripple as low as 1mVP-P (MAX853) and 2mVP-P (MAX850-MAX852), these charge pumps deliver stable and clean power. This low ripple is crucial for sensitive applications like wireless data loggers and personal communicators, where noise can significantly impact performance.
Wide Input Voltage Range: The 4.5V to 10V input voltage range allows the device to operate efficiently across a broad spectrum of input sources. This feature makes it suitable for battery-powered devices like cell phones and PDAs, ensuring consistent performance even as battery voltage fluctuates.
External Synchronizing Clock Input (MAX852): The ability to synchronize with an external clock (available in MAX852) enhances system integration and reduces electromagnetic interference (EMI). This feature is particularly beneficial in complex systems where multiple components need to operate in harmony, improving overall system reliability.
Logic-Level Shutdown Mode: The logic-level shutdown mode reduces current consumption to a maximum of 1µA over temperature, significantly extending battery life in portable devices. This low-power mode is ideal for applications like wireless data loggers and personal communicators, where power efficiency is critical.
Applications
LCD Contrast Adjustment: The MAX850-MAX853 is perfect for controlling the contrast of LCD displays in portable devices like PDAs and personal communicators. Its adjustable output voltage allows for fine-tuning the contrast, ensuring optimal display performance in various lighting conditions.
Negative Power Supply for Data Loggers: The MAX850-MAX853 is well-suited for providing regulated negative power supplies in wireless data loggers. Its low-noise output and compact SOIC package make it an excellent choice for portable and battery-powered applications requiring reliable voltage regulation.
Precision Bias for Sensor Interfaces: The MAX850-MAX853 is ideal for generating precise negative bias voltages in sensor interface circuits, such as those used in industrial or scientific instrumentation. Its adjustable output and low ripple ensure accurate and stable operation, even in sensitive measurement environments.
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