Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

BD9130EFJ Datasheet(PDF) 7 Page - Rohm

No. de Pieza. BD9130EFJ
Descripción  Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET
Descarga  15 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  ROHM [Rohm]
Página de inicio  http://www.rohm.com
Logo 

BD9130EFJ Datasheet(HTML) 7 Page - Rohm

Zoom Inzoom in Zoom Outzoom out
 7 / 15 page
background image
BD9130EFJ
Technical Note
7/14
www.rohm.com
2009.05 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Description of operations
Soft-start function
EN terminal shifted to “High” activates a soft-starter to gradually establish the output voltage with the current limited during
startup, by which it is possible to prevent an overshoot of output voltage and an inrush current.
Shutdown function
With EN terminal shifted to “Low”, the device turns to Standby Mode, and all the function blocks including reference
voltage circuit, internal oscillator and drivers are turned to OFF. Circuit current during standby is 0μF (Typ.).
UVLO function
Detects whether the input voltage sufficient to secure the output voltage of this IC is supplied. And the hysteresis width of
50mV (Typ.) is provided to prevent output chattering.
Fig.24 Soft start, Shutdown, UVLO timing chart
Short-current protection circuit with time delay function
Turns OFF the output to protect the IC from breakdown when the incorporated current limiter is activated continuously for
the fixed time(TLATCH) or more. The output thus held tuned OFF may be recovered by restarting EN or by re-unlocking
UVLO.
Fig.25 Short-current protection circuit with time delay timing chart
t2=TLATCH
Output OFF
latch
EN
VOUT
Output Short circuit
Threshold Voltage
IL
Standby
mode
Operating mode
Operating mode
EN
Timer latch
EN
Standby
mode
IL Limit
t1<TLATCH
Hysteresis 50mV
Tss
Tss
Tss
Soft start
Standby mode
Operating mode
Standby
mode
Operating mode
Standby
mode
Operating mode
Standby mode
UVLO
EN
UVLO
UVLO
VCC
EN
VOUT


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15 


Datasheet Download




Enlace URL




Privacy Policy
ALLDATASHEET.ES
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
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