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MC33283
Versatile 6 Regulator Power
Management Circuit for
Cellular Subscriber
Terminal
The MC33283 is a complete power management solution for portable devices such as telephone handsets, two−way radios, etc. Thanks to its large scale integration, the device offers up to seven Low DropOut regulators (LDO), two of them delivering a voltage higher than the battery’s.
Despite the presence of an internal charge pump, the overall noise specification makes the circuit an ideal candidate where noise is an important feature. Outputs deliver 40mVRMS typical (10−100kHz) at nominal output current.
With a 50dB ripple rejection under 10kHz, the circuit naturally shields the downstream electronics against DC choppy lines. This parameter guarantees a clean operation for battery operated devices.
MC33283 Datasheet
