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US1261CT Datasheet(PDF) 2 Page - UNISEM |
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US1261CT Datasheet(HTML) 2 Page - UNISEM |
2 / 6 page US1261 3-2 Rev. 1.7 3/22/99 Unless otherwise specified ,these specifications apply over ,Cin=1 uF,Cout=100uF,and Tj=0 to 150 °C.Typical values refer to Tj=25 °C. Ifl=6A for output #2 & 1A for output #1.Vctrl=5V,Vin=3.3V. PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS Vctrl Input Voltage 3.0 V Output Voltage #2 Vo2 Io=10mA, Tj=25 °C 1.485 1.500 1.515 V Io=10mA 1.470 1.500 1.530 Output Voltage #1 Vo1 Io=10mA, Tj=25 °C 2.462 2.500 2.537 V Io=10mA 2.425 2.500 2.575 Line Regulation Io=10mA, 3.1V<Vin<3.6V 0.2 % Load Regulation (note 1) 10mA<Io<Ifl 0.4 % Dropout Voltage (output #2) Note 2, Io=6A, Vctrl=4.75V 1.3 V Dropout Voltage (output #1) Note 2, Io=1A, Vctrl=4.75V 0.4 0.6 V Current Limit (output #2) dVo=100mV 6.1 A Current Limit (output #1) dVo=100mV 1.1 A Minimum Load Current 5 10 mA (note 3) Thermal Regulation 30 mS PULSE,Io=Ifl 0.01 0.02 %/W Ripple Rejection f=120HZ ,Co=25uF Tan Io=0.5*Ifl 70 dB Temperature Stability Io=10mA 0.5 % Long Term Stability Tj=125 °C,1000 Hrs 0.3 % RMS Output Noise 10hz<f<10khz 0.003 %Vo Note 3 : Minimum load current is defined as the mini- mum current required at the output in order for the out- put voltage to maintain regulation. Typically the resistor dividers are selected such that it automatically main- tains this current. ABSOLUTE MAXIMUM RATINGS ABSOLUTE MAXIMUM RATINGS Input Voltage (Vin) ............................................................. 10V Power Dissipation ............................................ Internally Limited Storage Temperature Range ................................ -65 °C TO 150°C Operating Junction Temperature Range ...................... 0 °C TO 150°C PACKAGE INFORMATION PACKAGE INFORMATION 7 PIN PLASTIC TO220 7 PIN PLASTIC TO263 7 PIN POWER FLEX (P) θJT =2.7°C/W θJA =60°C/W θJA =30°C/W for 1"sq pad θJA =30°C/W for 1"sq pad ELECTRICAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS Note 1 : Low duty cycle pulse testing with Kelvin con- nections are required in order to maintain accurate data. Note 2 : Drop-out voltage is defined as the minimum differential voltage between Vin and Vout required to main- tain regulation at Vout. It is measured when the output voltage drops 1% below its nominal value. FRONT VIEW 1 2 3 4 5 Vctrl Gnd Vout2 Vin Vout1 Vctrl Gnd Vout2 Vin Vout1 FRONT VIEW 1 2 3 4 5 FRONT VIEW 1 2 3 4 5 Vctrl Gnd Vout2 Vin Vout1 |
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