Dual Low Drop Out Regulator Ceramic Capacitor Available BA3257FP/HFP Description Dimension (Unit : mm) BA3257FP/HFP is a power supply IC in which BA3257FP 2-output series regulators are incorporated into 2.30.2 a power package (TO252-5/HRP-5). 2-outputs 6.50.2 +0.2 5.1-0.1 0.50.1 are 3.3V and a variable output.(Above 1.5V can 2-C0.5 be set.) Each current is 1A. Ceramic capacitor is available for output. 1 2 3 4 5 0.5 1.27 0.50.1 1.00.2 Features TO252-5 1) 3.3V/1A and Variable(1.25V standard)/1A 2) Output ceramic capacitor available 3) Output voltage accuracy :+/-2% BA3257HFP 4) Built-in over-current and thermal protection circuit 5) TO252-5 package and HRP-5 package 9.390.125 1.9050.1 8.820.1 (5.59) 1 2 3 4 5 Applications 1.2575 + 5.5 4.5 - 4.5 + 0.1 0.27 - 0.05 HDD/DVD S 1.72 0.730.1 D 0.08 S HRP-5 Absolute Maximum Ratings (Ta=25C) Parameter Symbol Limits Unit Power supply voltage VCC 15 V *1 HRP-5 2300 Power Pd mW *2 dissipation TO252-5 1300 Topr 0 +85 Operating temperature range ~ C Storage temperature range Tstg -55 ~ +150 C *1 Derating : 18.4mW/C for operation above Ta=25C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. *2 Derating : 10.4mW/C for operation above Ta=25C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. Recommended Operating Conditions (Ta=25C) Parameter Symbol Min. Typ. Max. Unit Power supply voltage VCC 4.75 - 14.0 V 8.00.13 1.0170.2 0.080.05 5.50.2 1.50.2 0.8 (7.49) 1.5 2.5 9.50.5 0.8350.2 1.5230.15 10.540.13 Electrical characteristics (Unless otherwise noted Ta=25C, Vcc=5V, R1=R2=5kW) Parameter Symbol Min. Typ. Max. Unit Conditions Circuit current Ib - 3 5 mA Io1=0mA, Io2=0mA Vcc=4.75 14V, Io1=5mA Line regulation 1,2 DVLINE1,2 - 5 15 mV Io2=5mA 1A Load regulation 1,2 DVLOAD1,2 - 5 20 mV 3.3V output Output voltage 3.234 3.300 3.366 V Io1=50mA Vo1 Dropout voltage DVD1 - 1.1 1.3 V Io1=1A Output current 1.0 - - A Io1 Variable output Io2=50mA Reference voltage V Vref 1.225 1.250 1.275 Dropout voltage DVD2 - 1.1 1.3 V Io2=1A, R1=8.2kW, R2=5kW Output current Io2 - - A 1.0 Application Circuit VO1 3.3V 5 Current CO1 Limit 1mF VOUT2=VREF X (1+R1/R2)+IADJ X R1 VO2 ADJ 4 Current CO2 Limit 1mF GND Thermal FIN Shutdown ADJ R1 2 R2 VCC VIN VREF 1 CIN BA3257FP/HFP 3.3mF