AQT104 ETC1
Document overview
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Technical content
Features
No need for output capacitor 500mA output current 150mV drop at 300mA Preset output voltages (1% accuracy) Low current consumption Foldback output current limitation Thermal Shutdown Excellent load and line regulation Low noise Fast turn on and off SOT23 package Block Diagram Pin Configuration Quik LDO™ technology is patent pending. Quik LDO™ is a trademark of Acutechnology Semiconductor Inc. Quik LDO™ is not a typo – with a Quik LDO™ you eliminate a “C”.
Acutechnology Semiconductor Inc. AQT104 Quik LDO™ Acutechnology Semiconductor Inc. www.acutechnology.com Pin Description Pin Pin Name Function VIN Regulator Input. GND Ground ENABLE Enable ADJ/CBY Output voltage adjust VOUT Regulator output Absolute Maximum Ratings Lead Temperature (soldering 10 seconds).260ºC Electrical Specifications Electrical characteristics are guaranteed by design over the full temperature range –40ºC <Tj<135ºC. Ambient temperature must be de-rated based upon power dissipation and package thermal characteristics. Unless otherwise stated, test conditions are Vin=Vout+0.5V, Iout=1mA, Tj=+25ºC. Symbol Parameter Conditions Min Typ Max Units VIN Input Voltage V Icc Ground Current 0.1 0.2 mA ILIM Current Limit 550 700 850 mA Vout Output Voltage Accuracy Ta=25ºC Over Temperature 1.5 2.5 DVcc Line regulation VIN=(Vout+0.1V) to 6V Iout=20mA 1.5 mV DViload Load Regulation Iout=1 mA to 500mA mV Tshut Thermal Shut-down Temperature Thermal Shut down Hysteresis 160 ºC DO Dropout Voltage Iout=300mA 150 180 mV PSRR Reference Power Supply Rejection Freq.=120Hz dB En Output Voltage Noise f=10Hz to 100KHz (no caps) Vout=2.5V 150 uVrms Venl EN Input Low Voltage 0.8 V Venh EN Input High Voltage Vin=5V V Isd Shutdown Current EN=0V 300 nA Preliminary Design Specification AQT104 Rev 05, May 2, 2003 Page 2 of 4
Acutechnology Semiconductor Inc. AQT104 Quik LDO™ Acutechnology Semiconductor Inc. www.acutechnology.com Typical Response OUT / V 2.42 2.46 2.5 2.54 2.58 2.62 Time/µSecs 100µSecs/div 100 200 300 400 500 600 Output current / mA 150 250 350 450 Load transient (current step=500mA). No output capacitor!! Enable signal / V 0.5 1.5 2.5 3.5 4.5 Time/µSecs 100µSecs/div 100 200 300 400 500 600 OUT / V 0.5 1.5 2.5 Turn on and off transient response. Preliminary Design Specification AQT104 Rev 05, May 2, 2003 Page 3 of 4
Acutechnology Semiconductor Inc. AQT104 Quik LDO™ Acutechnology Semiconductor Inc. www.acutechnology.com Preliminary Design Specification AQT104 Rev 05, May 2, 2003 Page 4 of 4 Package Mechanical Details SOT23-5 Millimetres Inches DIM MIN MAX MIN MAX A 0.90 1.45 0.035 0.057 0.00 0.15 0.00 0.006 0.90 1.3 0.035 0.051 b 0.35 0.50 0.014 0.020 C 0.09 0.20 0.0035 0.008 D 2.80 3.00 0.110 0.118 E 2.60 3.00 0.102 0.118 1.50 1.75 0.059 0.069 e
0.95 REF
0.037 REF
1.90 REF
0.075 REF
L 0.10 0.60 0.004 0.024 Contact information Acutechnology Semiconductor Inc. 3487 McKee Rd. Suite 52 San Jose CA 95127 USA TEL:(408) 259-2300 (408) 259-3400 FAX:(408) 259-9160 e-mail:info@acutechnology.com