DS2715 Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS2715 Datasheet PDF : 12 Pages
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DS2715: NiMH Cell Pack Charge Controller
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
(4.5V £ VDD £ 16.5V, TA = 0°C to +70°C, unless otherwise noted.)
CONDITIONS
MIN
TYP
MAX UNITS
UVLO Debounce Time
tUVLO
10
Current Sense
Comparator Propagation
Delay
tCOMP
(Note 7)
Discharge Detect
Propagation Delay
tDD
From detection of current
reversal
Return To Normal
Function (Op-Amp or
Comparator Mode)
tRNF
Time from reset of
discharge latch
µs
250
ns
1
µs
1
µs
RT Timing Accuracy
tRt
(Note 4)
-10
+10
%
Internal Clock Accuracy
tBASE
-10
+10
%
ELECTRICAL CHARACTERISTICS: CHARGING
PARAMETER
SYMBOL
(4.5V £ VDD £ 16.5V, TA = 0°C to +70°C, unless otherwise noted.)
CONDITIONS
MIN
TYP
MAX UNITS
Fast Charge Comparator
Threshold
VFC
Fast charge
-127
-121
-115
mV
Fast Charge Comparator
Hysteresis
VHYS-FC
Fast charge
-31
-28
-25
mV
Top-off and Pre-Charge
Comparator Threshold
VTO
Top-off and pre-charge
-38
-33
-28
mV
Top-off and Pre-Charge
Comparator Hysteresis
VHYS-TO Top-off and pre-charge
-10
-8
-6
mV
Discharge Latch Reset
Threshold
VDCHG-RST
-15
-10
-5
mV
Discharge Latch Set
Threshold
VDCHG-SET
Reverse current through
sense resistor
5
10
15
mV
Low Battery Detect
Threshold
VLB
From presence detect into
pre-charge
0.95
1.0
1.05
V
Cell Detect Threshold
VDET
1.50
1.55
1.60
V
No Cell Detect Threshold
Presence Detect
Threshold Hysteresis
Minimum Charge Temp
Maximum Charge Temp
Over Temp
dT/dt Detect
VOPEN
VHYS-PD
VTHM-MIN
(Note 5, 6)
VTHM-MAX (Note 5, 6)
VTHM-STOP
TTERM
(Note 5, 6)
1.60
1.65
1.70
V
90
100
110
mV
2.88
2.92
2.96
V
0
ºC
1.28
1.32
1.36
V
45
ºC
1.12
1.16
1.20
V
50
ºC
0.425
0.5
0.575 ºC/min
dT/dt Blanking Time
Fast Charge Timer
Range
Top-Off to Fast Charge
Duration Ratio
tBLANK
tFC
3.85
4.3
4.75
Min
0.5
6
Hours
1:2
3 of 12
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