Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT25

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. U-DFN2020-6

Back to Linear and Low Dropout (LDO) Regulators

AP7331

300MA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator

Datasheet

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Description

The AP7331 is a 300mA, adjustable and fixed output voltage, low dropout linear regulator. The device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The device is turned on when EN pin is set to logic high level. The characteristics of low dropout voltage and low quiescent current make it suitable for low power applications, for example, battery powered devices. The typical quiescent current is approximately 65μA. Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. The AP7331 is available in SOT25 and DFN2020-6 packages.

Feature(s)

300mA Low Dropout Regulator with EN

Very low IQ over full load: 65μA

Wide input voltage range: 2V to 6V

Wide adjustable output: 0.8V to 5.0V

Fixed output options: 1.0V to 3.3V

PSRR: 65dB typical at 100Hz

Fast start-up time: 80μs

Stable with low ESR, 1μF ceramic output capacitor

Excellent Load/Line Transient Response

Low dropout: 300mV typical at 300mA

Current limit protection

Short circuit protection

Thermal shutdown protection

Ambient temperature range: -40°C to 85°C

Specifications & Technical Documents

Product Parameters

Iq (typ) (µA)	55
Iq (max) (µA)	75
Operating Ambient Temperature (°C)	-40 to 85
AEC Qualified	No
Compliance (Only Automotive Supports PPAP)	Standard
Type	LDO
Output options	Adjustable & Fixed
Iout (A)	0.3
Vin (Max) (V)	6
Vin (Min) (V)	2
Vout (min)	0.4
Vout (max)	6
Fixed Vout (V)	1.0, 1.2, 1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.3
Adjustable VFB (V)	0.4
Accuracy 25C	2
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage	0.55
PSRR (dB) 1kHz	55
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