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AP139

300MA Low-Noise CMOS LDO

Datasheet

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Description

The AP139 is a positive voltage linear regulator utilizing CMOS technology. The features that include low quiescent current (45μA typ.), low dropout voltage, and high output voltage accuracy, make it ideal for battery applications. EN input connected to the device will produce a low bias current. The space-saving SOT25 package is attractive for “pocket” and “hand held” applications. This rugged device has both thermal shutdown, and current limit protections to prevent device failure under the “worst” operating conditions. In a low noise, regulated supply application, a 10nF capacitor is necessary to be placed in between Bypass and Ground. The AP139 is stable with a low ESR output capacitor of 1.0μF or greater.

Feature(s)

Very Low Dropout Voltage

Low Current Consumption: Typ. 45μA, max. 60uA

Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V 3.3V, and 3.5V

Guaranteed 300mA Output

Input Range from 2.7 up to 5.5V

Thermal Shutdown

Current Limiting

Stability with Low ESR Capacitors

Low Temperature Coefficient

Lead Free Package: SOT25

SOT25: Available in “Green” Molding Compound (No Br, Sb)

Lead Free Finish/RoHS Compliant

Application(s)

Personal Communication Devices

Home Electric/Electronic Appliances

PC Peripherals

Battery-Powered Devices

Product Specifications

Product Parameters

Iq (max) (µA)	60
Iq (typ) (µA)	45
AEC Qualified	No
Compliance (Only Automotive supports PPAP)	Standard
Type	LDO
Output options	Fixed
Iout (A)	0.3
Vin (Max) (V)	5.5
Vin (Min) (V)	2.7
Vout (min)	1.5
Vout (max)	5.5
Fixed Vout (V)	1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.3, 3.5
Accuracy 25C	2
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage	0.45
PSRR (dB) 1kHz	75
Operating Temperature (Ambient) (°C)	-40 to 85
Enable Active	Yes (High)
Channels	1
Output Discharge	No
Power Good	No
Reverse Protection	No
VCTL Function	No

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2654	2024-02-15	2024-04-28	Device End of Life (EOL)