Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

BD2202G Datenblatt(PDF) 8 Page - Rohm

Teilenummer BD2202G
Bauteilbeschribung  Load Switch ICs for Portable Equipment
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD2202G Datenblatt(HTML) 8 Page - Rohm

Back Button BD2202G_11 Datasheet HTML 4Page - Rohm BD2202G_11 Datasheet HTML 5Page - Rohm BD2202G_11 Datasheet HTML 6Page - Rohm BD2202G_11 Datasheet HTML 7Page - Rohm BD2202G_11 Datasheet HTML 8Page - Rohm BD2202G_11 Datasheet HTML 9Page - Rohm BD2202G_11 Datasheet HTML 10Page - Rohm BD2202G_11 Datasheet HTML 11Page - Rohm BD2202G_11 Datasheet HTML 12Page - Rohm Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 13 page
background image
BD2202G,BD2206G
Technical Note
8/12
www.rohm.com
2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
Operation description
BD2202G and BD2206G are high side switch IC with over-current protection function. The operating voltage range is from
2.7V to 3.6V and the current limit value is set on 400mA, 1A.
When an over-current condition lasts longer than an over-current shutdown time, the switch turns OFF. The OFF switch is set
on latch mode. The switch set on latch mode returns (to normal) by toggling EN pin from High to Low to High.
1.Switch On/Off control
VIN and VOUT pins are connected to each switch MOSFET drain and source. Moreover, VIN pin is also used as a power
supply input for the internal control circuit.
When the switch is turned on from EN control input, VIN and VOUT is connected by a 150mΩ switch. In normal condition,
the switch shows bidirectional. Therefore, when the voltage of VOUT is higher than VIN the current flows from VOUT to
VIN.
In the switch MOSFET, there is a parasitic diode (body diode) between drain and source. So, even when the switch is off,
when voltage of VOUT is higher than VIN, the current flows through the body diode from VOUT to VIN.
2. Over current detection (OCD)
The over current detection circuit limits current when current flowing in switch MOSFET exceeds the current limit threshold.
There are three types of response against over current. The over current detection circuit is in operation when the power
switch is ON (when EN signal is active).
2-1 When the switch is turned on while the output is in short-circuit status
When the switch is turned on while the output is in short-circuit status, the switch become current limit mode soon.
2-2 When the output short-circuits while the switch is on
When the output short-circuits or heavy load is connected while the switch is on, very large current flows until the over
current limit circuit responds. When the current detection, limit circuit works, current limitation is carried out.
2-3 When the output current increases gradually
When the output current increases gradually, current limitation does not work until the output current exceeds the over
current detection value. When it exceeds the detection value, current limitation is carried out.
3.Over current shutdown
When the over-current detection circuit detects an over-current, TBLANK timer starts working. When the over-current
condition disappears before TBLANK2 stage, TBLANK timer is reset. When the over-current condition progresses to more
than TBLANK1, the switch is shut off. The OFF switch is set on latch off mode. The latch is reset when EN terminal is
toggled or when UVLO is detected.
4.Under voltage lockout (UVLO)
UVLO keeps the power switch off until VIN voltage exceeds 2.3V (Typ.). Moreover, from a power switch ON situation, if
VIN voltage drops to 2.2V (Typ.), the power switch is set on OFF. UVLO has a 100mV hysteresis. The under voltage lock
out circuit is in operation when power switch is ON (when EN signal is active).
5.Thermal shutdown
When the chip temperature increases to 160°C (Typ.), the thermal shut down circuit works and the power switch is turned
OFF. When the chip temperature falls to 140°C (Typ.), the power switch output returns (to normal). This operation will
repeat itself until the causes of the chip temperature rise are removed or until the power switch output is turned off.
The thermal shutdown circuit is in operation when the power switch is ON (when EN signal is active).


Ähnliche Teilenummer - BD2202G_11

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Rohm
BD2202G ROHM-BD2202G_14 Datasheet
917Kb / 26P
   0.2A, 0.5A Current Load Switch ICs
More results

Ähnliche Beschreibung - BD2202G_11

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Rohm
BD2202G-LB ROHM-BD2202G-LB Datasheet
542Kb / 25P
   Load Switch ICs for Portable Equipment
BD2200GUL ROHM-BD2200GUL_11 Datasheet
383Kb / 10P
   Load Switch ICs for Portable Equipment
BD6520F ROHM-BD6520F_11 Datasheet
422Kb / 17P
   Load Switch ICs for Portable Equipment
BD6528HFV ROHM-BD6528HFV_11 Datasheet
316Kb / 12P
   Load Switch ICs for Portable Equipment
BD6524HFV ROHM-BD6524HFV_11 Datasheet
392Kb / 10P
   Load Switch IC for Portable Equipment
logo
Guangdong Youtai Semico...
FDV301N UMW-FDV301N Datasheet
390Kb / 7P
   Load Switch for Portable Applications
logo
Sanyo Semicon Device
LV2400X SANYO-LV2400X Datasheet
249Kb / 1P
   Ultraminiature FM Radio ICs for Portable Equipment LV2400X Series
logo
Rohm
BD2200GUL ROHM-BD2200GUL_14 Datasheet
1,004Kb / 22P
   0.5A, 1.0A Load Switch ICs
BD6524HFV ROHM-BD6524HFV_14 Datasheet
821Kb / 21P
   0.5A Current Load Switch ICs
BD6528HFV ROHM-BD6528HFV_14 Datasheet
1Mb / 26P
   0.5A Current Load Switch ICs
More results


Html Pages

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


Datenblatt Download

Go To PDF Page


Link URL




Privatsphäre und Datenschutz
ALLDATASHEETDE.COM
War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Linktausch   |   Hersteller
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