DS2715 Просмотр технического описания (PDF) - Maxim Integrated
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DS2715 Datasheet PDF : 17 Pages
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PARAMETER
Current Sense
Comparator Gain
SYMBOL
GCOMP
CONDITIONS
(Note 7)
DS2715: NiMH Battery Pack Charge Controller
MIN TYP
MAX UNITS
10
Ω-1
AC ELECTRICAL CHARACTERISTICS
(4.5V VDD 16.5V, TA = 0C to +70C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
MAX UNITS
UVLO Debounce Time
tUVLO
10
μs
Current Sense
Comparator Propagation
Delay
tCOMP
(Note 7)
250
ns
Discharge Detect
Propagation Delay
tDD
From detection of current
reversal
1
μs
Return To Normal
Function (Op-Amp or
Comparator Mode)
tRNF
Time from reset of discharge
latch
1
μs
RT Timing Accuracy
tRt
(Note 4)
-10
+10
%
Internal Clock Accuracy
tBASE
-10
+10
%
ELECTRICAL CHARACTERISTICS: CHARGING
(4.5V VDD 16.5V, TA = 0C to +70C, unless otherwise noted.)
PARAMETER
SYMBOL
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
TOPOFF and
PRECHARGE
Comparator Threshold
VTO
TOPOFF and PRECHARGE -38
-33
-28
mV
TOPOFF and
PRECHARGE
VHYS-TO TOPOFF and PRECHARGE 10
8
Comparator Hysteresis
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
PRECHARGE
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
VTHM-STOP
TTERM
(Note 5, 6)
(Note 5, 6)
1.60 1.65
90
100
2.88 2.92
0
1.28 1.32
45
1.12 1.16
50
0.425 0.5
1.70
110
2.96
1.36
1.20
0.575
V
mV
V
ºC
V
ºC
V
ºC
ºC/min
3 of 17
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