MC34704AEPR2集成电路（IC）的电源管理-专用规格书PDF中文资料

The 34704 is a multi-channel Power Management IC (PMIC) used to address power management needs for various multimedia application microprocessors. Its ability to provide either 5 or 8 independent output voltages with a single input power supply (2.7 and 5.5 V) together with its high efficiency, make it ideal for portable devices powered up by Li-Ion/polymer batteries or for USB powered devices as well.

The 34704 is housed in a 7x7 mm, Pb-free, QFN56 and is capable of operating at a switching frequency of up to 2.0 MHz. This makes it possible to reduce external component size and to implement full space efficient power management solutions.

Features

• 8 DC/DC (34704A) or 5 DC/DC (34704B) switching regulators with up to ±2 output voltage accuracy

• Dynamic voltage scaling on all regulators.

• Selectable output voltage or current regulation on REG8

• I2C programmability

• Output under-voltage and over-voltage detection for each regulator

• Over-current limit detection and short-circuit protection for each regulator

• Thermal limit detection for each regulator, except REG7

• Integrated compensation for REG1, REG3, REG6, and REG8

• 5.0 µA maximum shutdown current (All regulators are off, 5.5 V VIN)

• True cutoff on all of the boost and buck-boost regulators

• Pb-free packaging designated by suffix code EP