BQ2057CSN BENCHMARQ, BQ2057CSN Datasheet - Page 13
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BQ2057CSN
Manufacturer Part Number
BQ2057CSN
Description
PROG BATTERY CHARGER, 2057, SOIC8
Manufacturer
BENCHMARQ
Datasheet
1.BQ2057CSN.pdf
(31 pages)
Specifications of BQ2057CSN
Battery Type
Li-Ion / Li-Polymer
Input Voltage
15V
Battery Charge Voltage
4.2V
Charge Current Max
2A
Battery Ic Case Style
SOIC
No. Of Pins
8
No. Of Series Cells
1
Operating Temperature
RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BQ2057CSN
Manufacturer:
TIBB
Quantity:
529
Part Number:
BQ2057CSN
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
BQ2057CSNTR
Manufacturer:
TI/德州仪器
Quantity:
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battery temperature monitoring (continued)
DC+
DC−
R T1
Where R
specified by the thermistor manufacturer.
R
the V
T1
R T2
R SNS
For PTC Thermistors
or R
(TS1)
R
R
T2
(TC)
T1
T2
High-Side Current Sensing
and V
can be omitted If only one temperature (hot or cold) setting is required. Applying a voltage between
+
+
is the cold temperature resistance and R
SNS
BAT
VCC
TS
3
(TS2)
5
bq2057
2
5
R
R
R
thresholds to pin TS disables the temperature-sensing feature.
COMP
TH
TH
STAT
TH
VSS
R
CC
TH
* R
– 7
R
Figure 9. Temperature Sensing Circuits
Figure 10. bq2057 TS Input Thresholds
TC
TC
R
APPLICATION INFORMATION
TC
R
Normal Temperature Range
TC
BAT+
BAT−
Thermistor
Temperature Fault
Temperature Fault
www.ti.com
(TH)
DC−
is the hot temperature resistance of thermistor, as
DC+
V CC
V (TS2)
V (TS1)
V SS
Low-Side Current Sensing
SNS
BAT
VCC
TS
bq2057
SLUS025F − MAY 2001 − REVISED JULY 2002
COMP
STAT
VSS
CC
R SNS
R T1
R T2
BAT+
Thermistor
BAT−
(5)
(6)
13