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Description

General part information

LP3985 Series

The LP3985 is designed for portable and wireless applications with demanding performance and space requirements. LP3985 performance is optimized for battery-powered systems to deliver ultra low noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

The LP3985 is stable with a small 1-µF ±30% ceramic or high-quality tantalum output capacitor. The DSBGA requires the smallest possible PC board area – the total application circuit area can be less than 2 mm × 2.5 mm, a fraction of a 1206 case size.

An optional external bypass capacitor reduces the output noise without slowing down the load transient response. Fast startup time is achieved by utilizing an internal power-on circuit that actively pre-charges the bypass capacitor.

Technical Specifications

Parameters and characteristics for this part

SpecificationLP3985IM5-3.0
Control FeaturesEnable
Current - Output150 mA
Current - Quiescent (Iq)150 µA
Current - Supply (Max)250 µA
Mounting TypeSurface Mount
Number of Regulators1
Operating Temperature (Max)125 °C
Operating Temperature (Min)-40 °C
Output ConfigurationPositive
Output TypeFixed
Package NameSOT-23-5
Protection FeaturesOver Current, Short Circuit, Over Temperature
PSRR (Maximum)50 dB
PSRR (Minimum)40 dB
Voltage - Input (Max)6 V
Voltage - Output (Min/Fixed)3 V
Voltage Dropout (Max)0.1 V

Pricing

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