LD3980PM08R| Datasheet

LD3980PM08R, LD3980PM135R, LD3980PM18R, LD3980PU08R, LD3980PU135R, LD3980PU18R, LD3980XX08, LD3980XX135, LD3980XX18

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LD3980
Low drop - Low supply voltage Low ESR capacitor compatible
Feature summary

Input voltage from 1.7 to 3.6V Ultra low dropout voltage (130mV typ. at 300mA load) Very low quiescent current (110uA typ. at no load, 130uA max. at 300mA load; max 0.5uA in OFF MODE) Output voltage tolerance: +/- 1.0% @ 25 C, +/2.0% full temperature range Guaranteed output current up to 300mA Wide range of output voltage: 0.8V to 3.0V Logic-controlled electronic shutdown Compatible with ceramic capacitor CO = 1uF Internal current and thermal limit Temperature range: -40 C to 85 C
DFN6 (3x3)

Description
The LD3980 provides up to 300mA, from 1.7V to 3.6V input voltage. It can deliver a guaranteed 300mA continuous load current with a low 100mV dropout. It is stable with ceramic capacitor. The

ultra low drop-voltage, low quiescent current and low noise makes it suitable for low power applications and in battery powered systems. High power supply rejection is maintained down to low input voltage levels common to battery operated circuits. Shutdown Logic Control function is available this means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The device also includes a constant current limiting and thermal overload protection. Typical applications are in mobile phone, personal digital assistant (PDAs), cordless phone and similar battery powered wireless systems, portable information appliances..

Block diagram

December 2006

Rev. 1

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