BA3257FP-E2

Dual Low Drop Out Regulator Ceramic Capacitor Available BA3257FP/HFP Description 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. Dimension (Unit : mm) 1.5±0.2 BA3257FP 2.3±0.2 6.5±0.2 +0.2 5.1−0.1 4 5 1.27 0.5 Features 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 1.5 3 0.8 2 2.5 9.5±0.5 5.5±0.2 1 0.5±0.1 1.0±0.2 TO252-5 BA3257HFP 1.017±0.2 9.39±0.125 1.905±0.1 1.2575 1 2 3 4 0.835±0.2 1.523±0.15 10.54±0.13 (7.49) 8.82±0.1 (5.59) 8.0±0.13 Applications 5 5.5° 4.5° −+ 4.5° 0.1 0.27 −+ 0.05 HDD/DVD 0.08±0.05 S 1.72 0.73±0.1 D 0 .0 8 S HRP-5 Absolute Maximum Ratings (Ta=25˚C) Parameter Power supply voltage Power dissipation 0.5±0.1 2-C0.5 HRP-5 TO252-5 Symbol Limits VCC 15 Unit V ∗1 2300 Pd ∗2 1300 Operating temperature range Topr 0 ~ +85 Storage temperature range Tstg -55 ~ +150 ∗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. Recommended Operating Conditions (Ta=25˚C) Parameter Power supply voltage mW ˚C ˚C Symbol Min. Typ. Max. Unit VCC 4.75 - 14.0 V Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=5V, R1=R2=5kΩ) Parameter Symbol Min. Typ. Max. Unit Ib - 3 5 mA Io1=0mA, Io2=0mA Line regulation 1,2 ∆VLINE1,2 - 5 15 mV Vcc=4.75 → 14V, Io1=5mA Load regulation 1,2 ∆VLOAD1,2 - 5 20 mV Io2=5mA → 1A Vo1 ∆VD1 3.234 3.300 3.366 V Io1=50mA - 1.1 1.3 V Io1=1A Io1 1.0 - - A Vref ∆VD2 1.225 - 1.250 1.1 1.275 1.3 V Io2=50mA V Io2=1A, R1=8.2kΩ, R2=5kΩ Io2 1.0 - - A Circuit current [3.3V output] Output voltage Dropout voltage Output current [Variable output] Reference voltage Dropout voltage Output current Conditions Application Circuit VO1 5 Current Limit 3.3V CO1 1µF VOUT2=VREF X (1+R1/R2)+IADJ X R1 Current Limit GND FIN VO2 4 ADJ CO2 1µF Thermal Shutdown ADJ 2 R1 R2 VREF 1 BA3257FP/HFP VCC VIN CIN 3.3µF Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0