Small Boost Converter with Current Monitor Is Ideal for APD-Biasing in Fiber Modules
Note to Editor:
- The MAX15031 is a small step-up converter that can operate from 2.7V to 11V and provide an output voltage up to 76V.
- This device saves space and cost by integrating a high-side current monitor with high-speed current limit and a boost converter into a single IC.
- Maxim's superior BiCMOS process technology enables this advanced integration.
- The MAX15031 is ideal for fiber modules and avalanche photodiode (APD) biasing applications.
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SUNNYVALE, CA—April 1, 2009—Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX15031, a constant-frequency, pulse-width modulated (PWM) step-up converter that is designed for low-voltage systems that require a locally generated high voltage. Operating from a 2.7V to 11V supply, this device delivers a low-noise output voltage up to 76V (300mW of power) without an external voltage doubler. Additionally, Maxim's advanced BiCMOS process technology enables the MAX15031 to integrate a high-side current monitor with fast (1µs) current limiting to save space and cost in diode-biasing applications. This device is ideal for applications such as avalanche photodiode (APD) biasing, PIN biasing, and varacter biasing in fiber modules.
The MAX15031 utilizes peak current-mode PWM architecture with a fixed switching frequency of 400kHz, thus producing a low-noise output. The onboard current monitor offers three decades of dynamic range, and monitors current from 500nA to 4mA with high accuracy. Resistor-adjustable current limiting protects the APD from optical power transients. Internal soft-start circuitry limits the input inrush current during power-up, while a clamp diode protects the monitor's output from overvoltage conditions.
The MAX15031 is available in a space-saving, 4mm x 4mm, 16-pin TQFN package, and is fully specified over the -40°C to +125°C temperature range. Prices start at $1.65 (1000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company reported revenue in excess of $2 billion for fiscal 2008. Maxim was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 5900 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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