www.ti.com SLOS389A – NOVEMBER 2001– REVISED MAY 2002 ±
FEATURES DESCRIPTION D
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D В±3-A Maximum Output Current The DRV591 is a high-efficiency, high-current power
amplifier ideal for driving a wide variety of
thermoelectric cooler elements in systems powered
from 2.8 V to 5.5 V. PWM operation and low output
stage on-resistance significantly decrease power
dissipation in the amplifier. D
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D Two Selectable Switching Frequencies Low Supply Voltage Operation: 2.8 V to 5.5 V
High Efficiency Generates Less Heat
Over-Current and Thermal Protection
Fault Indicators for Over-Current, Thermal
and Under-Voltage Conditions The DRV591 is internally protected against thermal and
current overloads. Logic-level fault indicators signal
when the junction temperature has reached
approximately 130В°C to allow for system-level
shutdown before the amplifier’s internal thermal
shutdown circuitry activates. The fault indicators also …
