전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

BA3258HFP 데이터시트(PDF) 7 Page - Rohm

부품명 BA3258HFP
상세설명  Dual Output Secondary Fixed Output LDO Regulators
Download  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  ROHM [Rohm]
홈페이지  http://www.rohm.com
Logo ROHM - Rohm

BA3258HFP 데이터시트(HTML) 7 Page - Rohm

  BA3258HFP_11 Datasheet HTML 1Page - Rohm BA3258HFP_11 Datasheet HTML 2Page - Rohm BA3258HFP_11 Datasheet HTML 3Page - Rohm BA3258HFP_11 Datasheet HTML 4Page - Rohm BA3258HFP_11 Datasheet HTML 5Page - Rohm BA3258HFP_11 Datasheet HTML 6Page - Rohm BA3258HFP_11 Datasheet HTML 7Page - Rohm BA3258HFP_11 Datasheet HTML 8Page - Rohm BA3258HFP_11 Datasheet HTML 9Page - Rohm  
Zoom Inzoom in Zoom Outzoom out
 7 / 9 page
background image
BA3258HFP,BA33D15HFP,BA33D18HFP
Technical Note
7/8
www.rohm.com
2011.03 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
Notes for use
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 or an open circuit. If any over rated
values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses.
2) GND voltage
The potential of GND pin must be minimum potential in all operating conditions.
3) Thermal Design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.
4) Inter-pin shorts and mounting errors
Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any
connection error or if pins are shorted together.
5) Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to malfunction.
6) Testing on application boards
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress.
Always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to or
removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic
measure. Use similar precaution when transporting or storing the IC.
7) Regarding input pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated.
P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode
or transistor. For example, the relation between each potential is as follows:
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes can occur inevitable in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, operational faults, or physical damage. Accordingly, methods by which parasitic diodes
operate, such as applying a voltage that is lower than the GND (P substrate) voltage to an input pin, should not be used.
8) Ground Wiring Pattern
When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns,
placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage
variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the
GND wiring pattern of any external components, either.
9) Thermal Shutdown Circuit (TSD)
This IC incorporates a built-in thermal shutdown circuit for protection against thermal destruction. Should the junction
temperature (Tj) reach the thermal shutdown ON temperature threshold, the TSD will be activated, turning off all output
power elements. The circuit will automatically reset once the chip's temperature Tj drops below the threshold temperature.
Operation of the thermal shutdown circuit presumes that the IC's absolute maximum ratings have been exceeded.
Application designs should never make use of the thermal shutdown circuit.
10) Overcurrent protection circuit
An overcurrent protection circuit is incorporated in order to prevention destruction due to short-time overload currents. Continued
use of the protection circuits should be avoided. Please note that the current increases negatively impact the temperature.
11) Damage to the internal circuit or element may occur when the polarity of the Vcc pin is opposite to that of the other pins in
applications. (I.e. Vcc is shorted with the GND pin while an external capacitor is charged.) Use a maximum capacitance of
1000 mF for the output pins. Inserting a diode to prevent back-current flow in series with Vcc or bypass diodes between
Vcc and each pin is recommended.
Fig32 Bypass diode
Fig. 33 Example of Simple Bipolar IC Architecture
VCC
Output pin
Diode for preventing back current flow
Bypass diode
GND
P 基板
N
P
N
N
P
P
(端子
A)
抵抗
GND
N
P
P
(端子
B)
トランジスタ
(NPN)
B
N
E
C
GND
P 基板
寄生素子
Transistor (NPN)
Resistor
Pin A)
P substrate
Parasitic elements
Pin B)
N
P
N
(Pin A)
GND
Parasitic elements
GND
(Pin B)
B
C
E
Parasitic elements or
transistors
x


유사한 부품 번호 - BA3258HFP_11

제조업체부품명데이터시트상세설명
logo
Rohm
BA3258HFP-TR ROHM-BA3258HFP-TR Datasheet
407Kb / 18P
   Dual Output Fixed Output LDO Regulators
BA3258HFP ROHM-BA3258HFP_09 Datasheet
357Kb / 9P
   Dual-output Secondary Fixed Output LDO Regulators for Local Power Supplies
More results

유사한 설명 - BA3258HFP_11

제조업체부품명데이터시트상세설명
logo
Rohm
BA15JC5WT ROHM-BA15JC5WT Datasheet
351Kb / 11P
   Secondary Fixed Output LDO Regulators
BA3259HFP ROHM-BA3259HFP_11 Datasheet
341Kb / 11P
   Secondary Dual-Output (Fixed/Variable) LDO Regulators
BA33D18HFP-TR ROHM-BA33D18HFP-TR Datasheet
407Kb / 18P
   Dual Output Fixed Output LDO Regulators
BA3258HFP ROHM-BA3258HFP_09 Datasheet
357Kb / 9P
   Dual-output Secondary Fixed Output LDO Regulators for Local Power Supplies
BA3259HFP ROHM-BA3259HFP_09 Datasheet
383Kb / 10P
   Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies
BA3259HFP ROHM-BA3259HFP_12 Datasheet
441Kb / 19P
   Dual-Output (Fixed/Variable) LDO Regulators
BA33E00WHFP-TR ROHM-BA33E00WHFP-TR Datasheet
441Kb / 19P
   Dual-Output (Fixed/Variable) LDO Regulators
BD80C0AFPS ROHM-BD80C0AFPS_10 Datasheet
418Kb / 13P
   Standard Fixed Output LDO Regulators
BA03CC0WT ROHM-BA03CC0WT_11 Datasheet
328Kb / 12P
   Standard Fixed Output LDO Regulators
BD15HC0WEFJ ROHM-BD15HC0WEFJ Datasheet
495Kb / 21P
   1A Fixed Output LDO Regulators
More results


Html Pages

1 2 3 4 5 6 7 8 9


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com