AP2126K-ADJTRG1 Diodes Incorporated

Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2126 General Description Features Wide Operating Voltage: 3.0V to 6V The AP2126 series are positive voltage regulator ICs High Output Voltage Accuracy: 2% fabricated by CMOS process. High Ripple Rejection: The AP2126 series have features of low dropout 68dB f=1kHz, 54dB f=10kHz voltage, low noise, high output voltage accuracy, and Low Standby Current: 0.1 A Low Dropout Voltage: 170mV 300mA for low current consumption which make them ideal for V =3.3V, 140mV 300mA for V =5.2V use in various battery-powered devices. OUT OUT Low Quiescent Current: 60 A Typical AP2126 is available in 1.25V to 5.5V adjustable Low Output Noise: 80 Vrms V =1.25V OUT voltage versions. Short Current Limit: 50mA Over Temperature Protection AP2126 series are available in SOT-23-5 Package. Compatible with Low ESR Ceramic Capacitor: 1F for C and C IN OUT Excellent Line/Load Regulation Soft Start Time: 50 s Auto Discharge Resistance: R =60 DS(ON) Applications Datacom Notebook Computers Mother Board SOT-23-5 Figure 1. Package Type of AP2126 Sep. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2126 Pin Configuration K Package (SOT-23-5) V V 1 5 IN OUT GND 2 34 Shutdown ADJ Figure 2. Pin Configuration of AP2126 (Top View) Functional Block Diagram Shutdown Shutdown V and IN Logic Control V REF MOS Driver V OUT Current Limit And Thermal Protection ADJ GND Figure 3. Functional Block Diagram of AP2126 Sep. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2