Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

BA3259HFP Scheda tecnica(PDF) 9 Page - Rohm

Il numero della parte BA3259HFP
Spiegazioni elettronici  Secondary Dual-Output (Fixed/Variable) LDO Regulators
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo ROHM - Rohm

BA3259HFP Scheda tecnica(HTML) 9 Page - Rohm

Back Button BA3259HFP Datasheet HTML 3Page - Rohm BA3259HFP Datasheet HTML 4Page - Rohm BA3259HFP Datasheet HTML 5Page - Rohm BA3259HFP Datasheet HTML 6Page - Rohm BA3259HFP Datasheet HTML 7Page - Rohm BA3259HFP Datasheet HTML 8Page - Rohm BA3259HFP Datasheet HTML 9Page - Rohm BA3259HFP Datasheet HTML 10Page - Rohm BA3259HFP Datasheet HTML 11Page - Rohm  
Zoom Inzoom in Zoom Outzoom out
 9 / 11 page
background image
Technical Note
9/10
www.rohm.com
2011.03 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
BA3259HFP,BA30E00WHFP
(PINA)
GND
Parasitic element
GND
(PINB)
B
C
E
Other adjacent elements
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 patterns
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 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
inapplications. (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.
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 substr ate
Parasitic element
(PIN B)
P substrate
N
P
N
Parasitic element
Fig. 32 Bypass diode
Fig. 33 Example of Simple Bipolar IC Architecture


Codice articolo simile - BA3259HFP

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Rohm
BA3259HFP ROHM-BA3259HFP Datasheet
191Kb / 6P
   Dual Low-Dropout Voltage Regulator
BA3259HFP ROHM-BA3259HFP Datasheet
383Kb / 10P
   Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies
BA3259HFP ROHM-BA3259HFP Datasheet
441Kb / 19P
   Dual-Output (Fixed/Variable) LDO Regulators
BA3259HFP-TR ROHM-BA3259HFP-TR Datasheet
441Kb / 19P
   Dual-Output (Fixed/Variable) LDO Regulators
BA3259HFP ROHM-BA3259HFP_09 Datasheet
383Kb / 10P
   Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies
More results

Descrizione simile - BA3259HFP

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Rohm
BA3258HFP ROHM-BA3258HFP_11 Datasheet
307Kb / 9P
   Dual Output Secondary Fixed Output LDO Regulators
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
BA15JC5WT ROHM-BA15JC5WT Datasheet
351Kb / 11P
   Secondary Fixed Output LDO Regulators
BA3259HFP ROHM-BA3259HFP_09 Datasheet
383Kb / 10P
   Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies
BA50BC0FP-E2 ROHM-BA50BC0FP-E2 Datasheet
512Kb / 19P
   1A Variable/Fixed Output LDO Regulators
BD00HC5WEFJ ROHM-BD00HC5WEFJ_12 Datasheet
494Kb / 22P
   1.5A Variable Fixed Output LDO Regulators
BD00HC5WEFJ ROHM-BD00HC5WEFJ_13 Datasheet
494Kb / 22P
   1.5A Variable / Fixed Output LDO Regulators
BD00HA3WEFJ ROHM-BD00HA3WEFJ_13 Datasheet
522Kb / 22P
   300mA Variable Fixed Output LDO Regulators
BDXXGA3WEFJ ROHM-BDXXGA3WEFJ Datasheet
858Kb / 23P
   300mA Variable / Fixed Output LDO Regulators
17.May.2013 Rev.004
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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