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The AP2205 series is a positive voltage regulator IC fabricated by high-voltage EPNP process.
The AP2205 has features of wide input voltage range, high accuracy, high ripple rejection, low dropout voltage, low noise, current limit and ultra-low quiescent current which make it ideal for use in various USB and portable devices.
The IC consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection, and a chip enable circuit, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery protection.
The AP2205 has 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 5.0V fixed voltage versions and adjustable voltage version.
The AP2205 is available in space-saving SOT25 and SOT89 packages.
Wide Input Voltage Range: 2.3V to 24V
Wide Output Voltage Range: 1.24V to 22V
Excellent Ripple Rejection: 60dB@ f = 1kHz
Low Dropout Voltage: VDROP = 100mV@ IOUT = 100μA
Low Ground Current
High Output Voltage Accuracy
Compatible with Low ESR Ceramic Capacitor
Excellent Line/Load Regulation
Thermal Shutdown Function
Laptop, Palmtops, Notebook Computers
Portable Information Appliances
Iq (typ) (µA)
Compliance (Only Automotive supports PPAP)
Adjustable & Fixed
Vin (Max) (V)
Vin (Min) (V)
Fixed Vout (V)
1.5, 1.8, 2.5, 2.8, 3.0, 3.3, 5.0
Adjustable VFB (V)
Noise uV RMS 10-100 kHz
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage