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DESCRIPTION

The EV1517 is the evaluation board used to demonstrate the white LED driver capabilities of the MP1517. The low 0.7V feedback voltage offers higher efficiency in white LED driver applications including cell phone camera flash. Soft-start, cycle-by-cycle current limiting and input under voltage lockout prevent overstressing or damage to sensitive external circuitry at startup and output short-circuit conditions. Current-mode regulation and external compensation components allow the MP1517 control loop to be optimized over a wide variety of input voltages, output voltages and load current conditions.

FEATURES

• 4A Peak Current Limit

• Low 700mV Feedback Threshold

• Internal 150mΩ Power Switch

• Input Range of 2.6V to 25V

• 95 Efficiency

• Zero Current Shutdown Mode

• Under Voltage Lockout Protection

• Open Load Protection

• Soft-Start Operation

• Thermal Shutdown

• Tiny QFN16 (4mm x 4mm) Package

APPLICATIONS

• Boost and SEPIC Regulators

• Handheld Computers

• Cell Phone Camera Flash, PDAs

• Digital Still and Video Cameras