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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
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.
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
Compliance (Only Automotive supports PPAP)
Adjustable & Fixed
Vin (Max) (V)
Vin (Min) (V)
Fixed Vout (V)
1.0, 1.2, 1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.3
Adjustabe VFB (V)
Iq (typ) (µA)
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage