LTC4011 Linear Technology, LTC4011 Datasheet - Page 3

• Manufacturer Part Number: LTC4011
• Description: High Efficiency Standalone Nickel Battery Charger
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
∆V
I
I
I
f
f
DC
V
V
t
t
V
V
t
t
ADC Inputs
I
Charger Thresholds
V
V
V
V
∆V
V
∆T
T
T
T
V
V
Charger Timing
∆t
∆t
BAT
SENSE
OFF
TYP
MIN
R(TG)
F(TG)
R(BG)
F(BG)
LEAK
MIN
MAXI
MAXC
TC
OL(TG)
OH(TG)
OL(BG)
OH(BG)
BP
BOV
MFC
FCBF
AR
TEMP(D)
TEMP(P)
4
TIMER
MAX
TERM
LI
MAX
TERM
PARAMETER
BAT – SENSE Top-Off Charge
Regulation Voltage
BAT – SENSE Line Regulation
BAT Input Bias Current
SENSE Input Bias Current
Input Bias Current
Typical Switching Frequency
Minimum Switching Frequency
Maximum Duty Cycle
TGATE Output Voltage Low
(V
TGATE Output Voltage High
TGATE Rise Time
TGATE Fall Time
BGATE Output Voltage Low
BGATE Output Voltage High
BGATE Rise Time
BGATE Fall Time
Analog Channel Leakage
Battery Present Threshold Voltage
Battery Overvoltage
Minimum Fast Charge Voltage
Fast Charge Battery Fault Voltage
–∆V Termination
Automatic Recharge Voltage
∆T Termination (Note 8)
Minimum Charging Temperature
(Note 8)
Maximum Charge Initiation
Temperature (Note 8)
Maximum Fast Charge Temperature
(Note 8)
V
Pause Threshold Voltage
Internal Time Base Error
Programmable Timer Error
TEMP
CC
– TGATE, Note 7)
Disable Threshold Voltage
A
CONDITIONS
0.3V < BAT < V
BAT = 4.8V
5.5V < V
0.3V < BAT < V
SENSE = BAT
SENSE or BAT, V
V
V
V
C
C
No Load
No Load
C
C
0V < V
CHEM = 3.3V (NiCd)
CHEM = 0V (NiMH)
V
CHEM = 3.3 (NiCd)
CHEM = 0V (NiMH)
V
V
V
R
= 25°C. V
CC
CC
CC
LOAD
LOAD
LOAD
LOAD
CELL
TEMP
TEMP
TEMP
TIMER
> 9V, No Load
< 7.5V, No Load
– TGATE, No Load
Decreasing
The
= 3nF, 10% to 90%
= 3nF, 10% to 90%
= 1.6nF, 10% to 90%
= 1.6nF, 10% to 90%
CELL
Increasing
Decreasing, Not Charging
Decreasing, Fast Charge
= 49.9k
CC
●
< 34V, Fast Charge
< 2V, 550mV < V
CC
indicates specifications which apply over the full operating
= 12V, BAT = 4.8V, GND = PGND = 0V, unless otherwise noted.
CC
CC
CELL
– 0.3V (Note 5)
– 0.1V
= 0V
TEMP
< 2V
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
– 0.075
INTV
1.275
V
MIN
1.85
1.17
41.5
460
320
850
130
–10
–20
6.5
6.5
0.5
1.3
0.5
0.5
2.8
CC
–2
–1
20
98
16
57
5
6
DD
–
INTV
1.325
±100
±0.3
1.95
1.22
TYP
550
V
350
900
5.6
10
10
50
30
99
35
45
35
15
20
10
45
60
0
0
0
2
1
5
CC
DD
LTC4011
1.375
MAX
13.5
13.5
8.75
2.05
1.27
150
615
100
100
370
950
280
2.7
1.5
8.5
3.3
50
50
65
65
25
14
47
63
10
20
2
1
°C/min
°C/min
UNITS
3
4011p
kHz
kHz
mV
mV
mV
mA
mV
mV
mV
mV
mV
mV
mV
µA
µA
nA
ns
ns
ns
ns
°C
°C
°C
%
%
%
V
V
V
V
V
V
V