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| Dual Low Drop Out Regulator Ceramic Capacitor Available BA3259HFP 1.2575 1 2 3 4 5 4.5 0.27 S + 5.5 - 4.5 + 0.1 - 0.05 Features 1) 3.3V/1A and Variable(0.8V standard)/1A 2) Output ceramic capacitor available 3) Output voltage accuracy :+/-2% 4) Built-in over-current and thermal protection circuit 5) HRP-5 package 0.080.05 1.72 0.730.1 D 0 .0 8 S HRP-5 Applications HDD/DVD Absolute Maximum Ratings (Ta=25C) Parameter Power supply voltage Power dissipation Operating temperature range Storage temperature range Symbol VCC Pd Topr Tstg 0 -55 Limits 15 2300 ~ ~ +85 +150 1 Unit V mW C C 1 Derating : 18.4mW/C for operation above Ta=25C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. Recommended Operating Conditions (Ta=25C) Parameter Symbol VCC Min. Power supply voltage 4.75 Typ. - Max. 14.0 Unit V 1.5230.15 0.8350.2 10.540.13 8.00.13 Description BA3259HFP is a power supply IC in which 2-output series regulators are incorporated into a power package (HRP-5). 2-outputs are 3.3V and a variable output. (It can be set between 0.8V and 3.3V.) Each current is 1A. Ceramic capacitor is available for output. Dimension (Unit : mm) 9.390.125 1.0170.2 8.820.1 (5.59) 1.9050.1 (7.49) Electrical characteristics (Unless otherwise noted; Ta=25C, Vcc=5V) Parameter Circuit current Line regulation 1,2 Load regulation 1,2 [3.3V output] Output voltage Dropout voltage Output current [Variable output] Reference voltage Dropout voltage Output current Symbol Ib VLINE1,2 VLOAD1,2 Vo1 VO1 Io1 Vref VO2 Io2 Min. 3.234 1.0 0.784 1.0 Typ. 3 5 5 3.300 1.1 0.800 1.1 Max. 5 15 20 3.366 1.3 0.816 1.3 Unit mA mV mV V V A V V A Io2=50mA Io2=1A Conditions Io1=0mA, Io2=0mA Vcc=4.75 14V, Io1=5mA Io=5mA 1A Io1=50mA Io1=1A Application Circuit VO1 5 3.3V OUT Current Limit CO1 1F VOUT2=VREF X (1+R1/R2)+IADJ X R1 VO2 4 GND FIN Current Limit Thermal Shutdown CO2 1F ADJ OUT ADJ 2 R1 R2 VREF BA3259HFP 1 VCC CIN 3.3F VIN |
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