AP7333
300mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
AP7333 Rev. 2 1 of 12 NOVEMBER 2009
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• 300mA Low Dropout Regulator in 3-pin package
• Very low I
Q
over full load: 65µA
• Wide input voltage range: 2V to 6V
• 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: -40ºC to 85°C
• SOT23 and SOT23R: Available in “Green” Molding
Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
The AP7333 is a 300mA, fixed output voltage, low dropout linear
regulator. The device included pass element, error amplifier,
band-gap, current limit and thermal shutdown circuitry.
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 AP7333 is available in SOT23 packages with different
pin-outs.
Applications
• XDSL Router
• Wireless LAN Cards
• Desktop and Notebook Computers
• Battery Powered Equipments
• Mouse, Keyboards
Typical Application Circuit
1uF
IN
GND
OUT
1uF
V
IN
V
OUT
AP7333
Features
Description
