2.9V to 5.2V Input, Triple-Output, AMOLED Display Power Supply

The MP5611 is a triple-output converter with a 2.9 to 5.2V input voltage (VIN) range designed for small-size active matrix organic light-emitting diode (AMOLED) display power supplies.

The device integrates a boost converter for ELVDD, an inverting buck-boost (IBB) converter for ELVSS, and another boost converter for AVDD. The single-wire digital control pin (CTRL) can configure the ELVSS, ELVDD, and AVDD voltages following digital protocol.

The MP5611 supports an independent start-up sequence for AVDD and ELVDD via the separated enable pins (EN_AVDD and CTRL). It also integrates an optional fast discharge function after the IC has been disabled.

Full protection features include VIN under-voltage lockout (UVLO) protection, cycle-by-cycle current limit protection, thermal shutdown, output short protection, and over-current protection (OCP) for AVDD and ELVDD.

The fully integrated synchronous rectification solution with a low on resistance improves the total system efficiency, minimizes external components, and reduces PCB layout size.

The MP5611 is available in a TQFN-16 (3mmx3mm) package.

Features

• 2.9V to 5.2V Input Voltage (VIN) Range
• Triple Output (AVDD, ELVDD, ELVSS)
• High Accuracy for Output Voltage (VOUT)
• Good Line and Load Regulation
• 4.6V to 5.2V Configurable ELVDD Voltage (VELVDD), Default 4.6V
• -1.4V to -6.4V Configurable EVLSS Voltage (VELVSS), Default -4V
• 500mA Output Current (IOUT) for ELVDD and ELVSS
• 5V to 7.7V Configurable AVDD Voltage (VAVDD), Default 5.8V
• 100mA IOUT for AVDD
• Respective Enable for AVDD and ELVDD
• Soft Start (SS)
• Active Fast Discharge Function
• Cycle-by-Cycle Current Limit Protection
• AVDD Output Over-Current Protection (OCP) (90mA to 270mA)
• ELVDD Output OCP (80mA to 650mA)
• Output Short to Ground Protection
• Over-Temperature Protection (OTP)
• Available in a TQFN-16 (3mmx3mm) Package

Applications

• Smart wearables