Datasheet MAX8520ETP+ - Maxim POWER DRIVER IC — Ficha de datos

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Manufacturer: Maxim

Description: POWER DRIVER IC

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Docket:
19-2586; Rev 2; 2/11
KIT ATION EVALU ABLE AVAIL
Smallest TEC Power Drivers for Optical Modules
General Description
The MAX8520/MAX8521 are designed to drive thermoelectric coolers (TECs) in space-constrained optical modules.

Both devices deliver ±1.5A output current and control the TEC current to eliminate harmful current surges. On-chip FETs minimize external components and high switching frequency reduces the size of external components. The MAX8520/MAX8521 operate from a single supply and bias the TEC between the outputs of two synchronous buck regulators. This operation allows for temperature control without "dead zones" or other nonlinearities at low current. This arrangement ensures that the control system does not hunt when the set-point is very close to the natural operating point, requiring a small amount of heating or cooling. An analog control signal precisely sets the TEC current. Both devices feature accurate, individually-adjustable heating current limit and cooling cur

RoHS: Yes