BA3257FPHFP ROHM

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

Features

Applications

Dimension (Unit : mm) BA3257FP BA3257HFP TO252-5 HRP-5 6.5±0.2 1 2 3 54 0.8 0.5 1.27 0.5±0.1 1.5 2.5 9.5±0.5 2.3±0.2 0.5±0.15.1 +0.2 -0.1 2-C0.5 5.5±0.2 1.0±0.2 1.5±0.2 9.39±0.125 0.73±0.1 0.27 1.905±0.1 0.835±0.2 1.523±0.15 10.54±0.13 0.08±0.05 1.2575 1 2 3 4 5 1.017±0.28.0±0.13 (7.49) (5.59) 8.82±0.1 S S D 0.08 1.72 + 0.1- 0.05 4.5°+ 5.5° - 4.5° BA3257FP/HFP Dual Low Drop Out Regulator Absolute Maximum Ratings (Ta=25˚C) Power supply voltage VCC -4.75 14.0 V Recommended Operating Conditions (Ta=25˚C) Parameter Min. Max. UnitTyp.Symbol BA3257FP/HFP is a power supply IC in which 2-output series regulators are incorporated into a power package (TO252-5/HRP-5). 2-outputs are 3.3V and a variable output.(Above 1.5V can be set.) Each current is 1A. Ceramic capacitor is available for output. 1) 3.3V/1A and Variable(1.25V standard)/1A 2) Output ceramic capacitor available 3) Output voltage accuracy :+/-2% 4) Built-in over-current and thermal protection circuit 5) TO252-5 package and HRP-5 package *1 Derating : 18.4mW/˚C for operation above Ta=25˚C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. *2 Derating : 10.4mW/˚C for operation above Ta=25˚C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. Power supply voltage Power dissipation Operating temperature range Storage temperature range Parameter Symbol Limits Unit VCC Pd HRP-5 TO252-5 Topr Tstg +85 +150 -55 mW 2300 V 1300 *2 Ceramic Capacitor Available

Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=5V, R1=R2=5kW) Parameter Symbol Min. Typ. Max. Unit Conditions 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 Io1=0mA, Io2=0mA Vcc=4.75 ® 14V, Io1=5mA Io2=5mA ® 1A Io1=50mA Io1=1A Io2=50mA Io2=1A, R1=8.2kW, R2=5kW Ib DVLINE1,2 DVLOAD1,2 Vo1 DVD1 Io1 Vref DVD2 Io2 3.234 1.0 1.225 1.0 3.300 1.1 1.250 1.1 3.366 1.3 1.275 1.3 mA mV mV V V A V V A VREF Thermal Shutdown Current Limit Current Limit ADJ ADJ GND VINVCC VO2 VOUT2=VREF X (1+R1/R2)+IADJ X R1 VO1 3.3V 3.3mF CIN 1mF CO2 1mF CO1 FIN BA3257FP/HFP