Maxim unveils power management IC

Maxim Integrated Products has introduced the MAX17065 integrated power management IC (PMIC).

It includes a step-up DC/DC converter, an inverting DC/DC converter, regulated positive and negative charge pumps and a low-dropout linear regulator (LDO).

Developed using Maxim's high-voltage technology, this PMIC integrates all power functions required for active-matrix, organic light-emitting diode (AM-OLED) displays.

The MAX17065 provides a cost-effective, high-performance device for mobile phones, digital still cameras (DSCs), MP3 players and other consumer products.

It ensures optimal performance while maximising flexibility.

Operating from a +2.3V to +4.5V input supply, the step-up converter provides a fixed +5.35V output with up to 94 per cent efficiency.

The inverting converter features an adjustable -0.5V to -5V output and is up to 83 per cent efficient.

Each switching converter has a cycle-by-cycle current limit, selectable SKIP and forced-PWM modes, and a selectable switching frequency of 600kHz/1.2MHz that allows for the use of small external inductors.

The output voltage of the positive charge pump can be programmed between +5.5V and +9V, while the negative charge pump can be programmed between -0.5V and -5V.

The LDO provides a +1.9V output for loads up to 60mA.

To save board space, the MAX17065 eliminates external power components by integrating synchronous rectifiers.

Additionally, an I2C-compatible interface programs the switching frequency, operating mode and current limit of the step-up and inverting converters, as well as the output voltages of the inverting converter and charge pumps.

The MAX17065 is available in a space-efficient, 4mm x 4mm, 28-pin TQFN package, and is fully specified over the -40 to +85C extended temperature range.

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