BD3941FP-E2 Rohm Semiconductor, BD3941FP-E2 Datasheet
BD3941FP-E2
Specifications of BD3941FP-E2
Available stocks
Related parts for BD3941FP-E2
BD3941FP-E2 Summary of contents
Page 1
... TECHNICAL NOTE Power Management LSI Series for Automotive Body Control LDO Regulator BD3940FP, BD3941FP/HFP/T Description BD394□FP Series regulators feature a high 36 V breakdown voltage and are compatible with onboard vehicle microcontrollers. They offer an output current of 500 mA while limiting dark current to 30 µA (TYP). The series supports the use of ceramic capacitors as output phase compensation capacitors. Since the ICs use P-channel DMOS output transistors, increased loads do not result in increased total supply current. BD394□ ...
Page 2
... BD3940FP Output voltage BD3941FP/HFP/T Output current BD3940FP Minimum I/O voltage difference BD3941FP/HFP/T Ripple rejection BD3940FP Input stability BD3941FP/HFP/T Load stability Note: This IC is not designed to be radiation-resistant. Note: All characteristics are measured with 0.33 µF and 0.1 µF capacitors connected to input and output pins, respectively. ...
Page 3
Reference data (Unless otherwise specified 25° SUPPLY VOLTAGE: Vcc [V] Fig. 1 Total Supply Current 1 0.8 0.6 0.4 0 100 200 300 400 OUTPUT ...
Page 4
Block diagram Vcc 1 Cin Vref OCP OVP GND TSD Fin 2 N.C Fig.13 TO252-3 Pin assignments • TO252-3 FIN Fig.16 • HRP5 FIN Fig.17 • TO220FP Fig.18 Vcc ...
Page 5
... Io ≤ (Refer to Icc in Fig.12) Vcc − Vo The maximum load current Iomax for the applied voltage Vcc can be calculated during the thermal design process. Calculation example Example) Vcc = 12 V and 85°C, BD3941FP 0.624 −12 × Icc Io ≤ 12 − 5 (Icc = 30 µA) Io ≤ Make a thermal calculation in consideration of the above equations so that the whole operating temperature range will be within the power dissipation ...
Page 6
Operation Notes 1) Absolute maximum ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit ...
Page 7
Applications or inspection processes with modes where the potentials of the Vcc pin and other pins may be reversed from their normal states may cause damage to the IC's internal circuitry or elements. Use an output pin capacitance of ...
Page 8
HRP5 <Dimension> 9.395 ± 0.125 (MAX 9.745 include BURR) 1.905 ± 0.1 8.82 – 0.1 (5.59 1.2575 + 5.5 4.5 - 4.5 + 0.1 0.27 - 0.05 S 0.73 ± 0.1 1.72 0.08 S (Unit:mm) ...
Page 9
Appendix 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 ...