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UM1770Y-12 Datasheet(PDF) 6 Page - Union Semiconductor, Inc. |
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UM1770Y-12 Datasheet(HTML) 6 Page - Union Semiconductor, Inc. |
6 / 13 page ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 6/13 UM1770 Electrical Characteristics Over recommended operating free-air temperature range (unless otherwise noted) Symbol Parameter Test Conditions Min Typ Max Unit VIN Input Voltage Range 2.5 6.0 V VUVLO Input Under Voltage Lockout VIN falling 1.8 2.4 V IQ Operating Quiescent Current VIN=4.2V, IOUT=0mA 92 140 μA VIN=4.2V, IOUT=500mA 250 300 I SHDN ___________ Shutdown Leakage Current 1 μA IOUT Output Current 500 mA Output Voltage Accuracy 1mA≤I OUT≤500mA, TA=-25℃ -2 +2 % ΔV DO Dropout Voltage IOUT=500mA,2.5V≤VOUT 220 320 mV ILIMT Output Current Limit VIN≥2.5V 700 mA t Startup Time Response RL=68Ω, COUT=1μF 40 μs VIL SHDN ___________ Input Low Voltage 2.5V≤VIN≤6.0V 0.4 V VIH SHDN ___________ Input High Voltage 2.5V≤VIN≤6.0V 2.0 V SHDN ___________ Input Current SHDN ___________ =VIN or GND -1 +1 μA TSHDN Thermal-Shutdown Temperature 160 ℃ ΔT SHDN Thermal-Shutdown Hysteresis 25 ℃ Line Regulation VOUT+1V≤VIN≤6.0V (2.5V≤VIN) IOUT=10mA 0.09 %/V Load Regulation VIN=VOUT+1V (2.5V≤VIN) 1mA≤I OUT≤500mA 0.2 % Output Voltage Noise 10Hz to 100kHz, CIN=1.0μF, IOUT=100mA Fixed Output, VOUT=1.0V 90 μV RMS Adjustable Output, VOUT=1.0V 60 Adjustable Output, VOUT=3.3V 194 Adjustable Output, VOUT=5.0V 305 PSRR Power Supply Ripple Rejection VIN=VOUT+1V IOUT=10mA f=100Hz 65 dB f=1kHz 60 f=10kHz 45 |
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