NCP370 데이터 시트보기 (PDF) - ON Semiconductor
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NCP370 Datasheet PDF : 11 Pages
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Vin
Vout
tonrev
FLAG
DIR
NCP370
Battery
Output
REV
micro−controller
micro−controller
External Accessory ID = 1
Figure 4. FLAG status in Reverse Mode
Table 1. FLAG TABLE
DIR REV
IN
OUT
FLAG
Status
Pass Element (Dual NMOS FET)
0
0
1.5 < Vin < UVLO or
Vin > OVLOoo
Hiz
Low
Open
0
0
0
1
UVLO < Vin < OVLOoo
1.5 < Vin < UVLO or
Vin > OVLO
= Vin−DROPOUT
Hiz
High
Low
Close
Open
0
1
UVLO < Vin < OVLO
= Vin−DROPOUT
High
Close
1
0
1
1
= Vout−DROPOUT
1.5 < Vin < UVLO or
Vin > OVLO
Vout > 2.5 V
Hiz
High
Low
Close
Open
1
1
UVLO < Vin < OVLO
DIR Input
To enable Direct Charge operation (Direct Mode), the
DIR pin shall be forced to low and REV to high. A high level
on the DIR pin disconnects OUT pin from IN pin. DIR does
not over−ride an OVLO or UVLO fault (FLAG status is still
available).
Hiz
High
Open
Table 2. TABLE SELECTION OF CHARGE MODES
DIR
REV
Mode
0
0
Enhance Mode
0
1
Direct Mode
1
0
Reverse Mode
1
1
Disable Mode
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