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BQ28550-R1 Scheda tecnica(PDF) 14 Page - Texas Instruments

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Il numero della parte BQ28550-R1
Spiegazioni elettronici  Single Cell Li-Ion Battery Gas Gauge
PDF  42 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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BQ28550-R1 Scheda tecnica(HTML) 14 Page - Texas Instruments

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V
DET1
VREL1
tOCD
VDET2
BAT
VSS
BAT
PACK–
BAT
VDET3
Normal
Discharge
Overcurrent
Normal
Normal
tSHORT
tOCR
tOCR
Load
Connected
VSHORT
Load Short
Circuit
Load
Disconnected
Discharge
Overcurrent
VSS
VSS
Not Recommended for New Designs
bq28550-R1
SLUSAS4A – OCTOBER 2012 – REVISED SEPTEMBER 2014
www.ti.com
Protection (continued)
In both the discharge overcurrent and short-circuit states, an internal discharge overcurrent release resistor (20
k
Ω typ) is turned on (switched in between VM and VSS), allowing the VM pin to be pulled down to the VSS
potential if the load is released. If the VM – VSS voltage becomes lower than the discharge overcurrent detection
voltage (VDET3 = 0.150 V typ) for a period up to the discharge overcurrent release delay time (tREL3 = 4 ms typ),
the discharge overcurrent release resistor is turned off and the DOUT pin transitions to a high level, enabling
discharge of the battery by turning on the external discharge control N-channel MOSFET.
14
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Product Folder Links: bq28550-R1



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