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ACT4921QI Datenblatt(PDF) 19 Page - Active-Semi, Inc

Teilenummer ACT4921QI
Bauteilbeschribung  Power Loss Protection with 6A eFuse
Download  35 Pages
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Hersteller  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4921QI Datenblatt(HTML) 19 Page - Active-Semi, Inc

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ACT4921QI
Rev 1.0, 18-Jan-2018
Innovative PowerTM
www.active-semi.com
ActiveSwitcherTM is a trademark of Active-Semi
Copyright © 2018 Active-Semi, Inc.
19
Table 3: IC Functionality vs Operating Conditions.
Operation
Conditions
eFuse
Blocking
FET
Boost
Buck
PLI
PG_VO PG_STR nIRQ
IC Action
Normal Operation
On
On
Enabled
Off
High
High
High
High
Boost Charges STR Cap as
needed
Input OC
Vin - Vout < 560mV
On
On
Enabled
Off
High
High
High
Low
eFuse in LDO Mode
Input OC
Vin - Vout > 560mV
On → Off
Off
Off
On
Low
Low
High →
Low
Low
Enter Supplement Mode
VBUS Short
On → Off
On
Off
On
Low
Low
High →
Low
Low
Enter Supplement Mode
Input Over Voltage
On → Off
On
Off
On
Low
High
High →
Low
Low
Enter Supplement Mode
Input Under Voltage On → Off
On
Off
On
Low
High
High →
Low
Low
Enter Supplement Mode
EN Pin Low (@
Start up)
Off
Off
Off
Off
Low
Low
Low
Low
IC is disabled
EN Pin Low (@
Normal Operation)
On → Off
Off
Off
On
Low
Low
High →
Low
Low
Enter supplement mode first,
then IC is disabled
ENB Pin Low
On
Off
Off
Off
No
Effect
No
Effect
Depends
on Vstr
Low
Disables Boost & Buck, turns
off Blocking FET
Health Checking
On
On
Off
Off
High
High
High
High
If failed, PS_STR and nIRQ go
low
120°C < Tj < 145 °C
On
On
Enabled
Off
High
High
High
Low
Sends out thermal alert
145 °C < Tj <
155 °C
On
On
Off
Off
High
High
Depends
on Vstr
Low
PG_STG depends on Vstr
Tj > 155 °C
Off
Off
Off
Off
Low
Low
Low
Low
IC is disabled


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