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BQ2054SN Datasheet(PDF) 13 Page - Texas Instruments

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Part # BQ2054SN
Description  Lithium Ion Fast-Charge IC
PDF  19 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ2054SN Datasheet(HTML) 13 Page - Texas Instruments

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13
Impedance
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Notes
RBATZ
BAT pin input impedance
50
-
-
M
Ω
RSNSZ
SNS pin input impedance
50
-
-
M
Ω
RTSZ
TS pin input impedance
50
-
-
M
Ω
RPROG1
Soft-programmed pull-up or pull-down
resistor value (for programming)
--
10
k
Ω
DSEL
RPROG2
Pull-up or pull-down resistor value
-
-
3
k
Ω
ITERM
RMTO
Charge timer resistor
20
-
480
k
Ω
Timing (TA = TOPR;VCC = 5V ±10%)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Notes
tMTO
Charge time-out range
1
-
24
hours
See Figure 7
tQT
Pre-charge qual test time-out period
-
tMTO
--
tHO
Termination hold-off period
1.14
-
1.52
sec.
tIMIN
Min. current detect filter period
80
160
msec.
FPWM
PWM regulator frequency range
-
100
kHz
CPWM = 0.001
µF
(equation 7)
Capacitance
Symbol
Parameter
Minimum
Typical
Maximum
Unit
CMTO
Charge timer capacitor
-
-
0.1
µF
CPWM
PWM R-C capacitance
-
0.001
-
µF
bq2054



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