INDUSTRY'S SMALLEST TEC DRIVERS FOR SFF/SFP MODULES REDUCE HEAT GENERATION BY 50%
SUNNYVALE, CA-November 14, 2002-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX8520/MAX8521, the industry's smallest, coolest-running Peltier thermo-electric controller (TEC) drivers for small form factor (SFF) and small form factor pluggable (SFP) fiber optic modules. These devices integrate power MOSFETs, protection, and monitoring circuits, and are compatible with analog or digital temperature control circuits.
Switching frequency is adjustable up to 1MHz, reducing the size of external components and the circuit footprint to 0.31in2. Compared to competing products, the MAX8520/MAX8521 feature 50% lower power MOSFET RDSON, reducing heat generation by 50%.
The MAX8520/MAX8521 control the TEC current, unlike competitors' devices which control the TEC voltage. This current control scheme eliminates surge currents in the TEC and improves system reliability. Individual, accurate heating/cooling current limits and voltage-limit protection provide the safest design.
The MAX8520/MAX8521 are rated at ±1.5A bidirectional output current. The MAX8521 can be synchronized to an external clock signal to reduce noise in systems using multiple switching regulators, or can be set to run at 500kHz or 1MHz. The MAX8520's switching frequency can be programmed up to 1MHz with an external resistor.
The MAX8520ETP/MAX8521ETP are available in a thin 5mm x 5mm QFN package. The MAX8521EBX is also available in a small 3mm x 3mm UCSP™ chip-scale package. These devices are specified for the extended industrial temperature range (-40°C to +85°C). Pricing for the MAX8521ETP starts at $3.75 (1000-up, FOB, USA). Evaluation kits are available to speed designs.
UCSP is a registered trademark of Maxim, Inc.
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