DS2715 Dallas Semiconducotr, DS2715 Datasheet - Page 3

• Manufacturer Part Number: DS2715
• Description: NiMH Battery Pack Charge Controller
• Manufacturer: Dallas Semiconducotr

AC ELECTRICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS: CHARGING
UVLO Debounce Time
Current Sense
Comparator Propagation
Delay
Discharge Detect
Propagation Delay
Return To Normal
Function (Op-Amp or
Comparator Mode)
R
Internal Clock Accuracy
Fast Charge Comparator
Threshold
Fast Charge Comparator
Hysteresis
Top-off and Pre-Charge
Comparator Threshold
Top-off and Pre-Charge
Comparator Hysteresis
Discharge Latch Reset
Threshold
Discharge Latch Set
Threshold
Low Battery Detect
Threshold
Cell Detect Threshold
No Cell Detect Threshold
Presence Detect
Threshold Hysteresis
Minimum Charge Temp
Maximum Charge Temp
Over Temp
dT/dt Detect
dT/dt Blanking Time
Fast Charge Timer
Range
Top-Off to Fast Charge
Duration Ratio
T
Timing Accuracy
PARAMETER
PARAMETER
SYMBOL
SYMBOL
V
V
V
V
V
V
V
V
DCHG-RST
DCHG-SET
THM-STOP
V
T
t
THM-MAX
t
THM-MIN
t
t
V
BLANK
HYS-FC
HYS-TO
HYS-PD
COMP
t
UVLO
V
V
BASE
V
t
OPEN
TERM
t
RNF
t
DD
DET
FC
Rt
TO
FC
LB
(Note 7)
From detection of current
reversal
Time from reset of
discharge latch
(Note 4)
Fast charge
Fast charge
Top-off and pre-charge
Top-off and pre-charge
Reverse current through
sense resistor
From presence detect into
pre-charge
(Note 5, 6)
(Note 5, 6)
(Note 5, 6)
CONDITIONS
CONDITIONS
(4.5V £ V
(4.5V £ V
3 of 12
DD
DD
£ 16.5V, T
£ 16.5V, T
A
A
0.425
= 0°C to +70°C, unless otherwise noted.)
= 0°C to +70°C, unless otherwise noted.)
-127
0.95
1.50
1.60
2.88
1.28
1.12
3.85
MIN
MIN
-10
-10
-31
-38
-10
-15
0.5
10
90
5
TYP
TYP
-121
1.55
1.65
2.92
1.32
1.16
100
-28
-33
-10
1.0
0.5
4.3
1:2
10
45
50
-8
0
0.575
MAX
MAX
-115
1.05
1.60
1.70
2.96
1.36
1.20
4.75
250
+10
+10
110
-25
-28
15
-6
-5
1
1
6
UNITS
UNITS
ºC/min
Hours
Min
mV
mV
mV
mV
mV
mV
mV
µs
ns
µs
µs
ºC
ºC
ºC
%
%
V
V
V
V
V
V