LTC4010 Datasheet, PDF (3/20 Pages) Linear Integrated Systems – High Efficiency Standalone Nickel Battery Charger

LTC4010
ELECTRICAL CHARACTERISTICS _{The ● indicates specifications which apply over the full operating}
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 12V, BAT = 4.8V, GND = PGND = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
∆V_LI
I_BAT
I_SENSE
I_OFF
f_TYP
f_MIN
DC_MAX
V_OL(TG)
V_OH(TG)
t_R(TG)
t_F(TG)
V_OL(BG)
V_OH(BG)
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 (Note 6)
TGATE Output Voltage High
TGATE Rise Time
TGATE Fall Time
BGATE Output Voltage Low
BGATE Output Voltage High
5.5V < V_CC < 34V, Fast Charge
0.3V < BAT < V_CC – 0.1V
SENSE = BAT
SENSE or BAT, V_CELL = 0V
V_CC ≥ 9V, No Load (V_CC – TGATE)
V_CC ≤ 7.5V, No Load
V_CC – TGATE, No Load
C_LOAD = 3nF, 10% to 90%
C_LOAD = 3nF, 10% to 90%
No Load
No Load
●
1
TBD
mV
–2
0
2
mA
50
150
µA
● –1
0
1
µA
● 485
550
615
kHz
● 20
30
kHz
98
99
%
● 5.35
6.3
8.75
V
●
50
mV
●
0
50
mV
35
50
ns
45
100
ns
●
0
50
mV
●
INTV_DD INTV_DD
V
– 0.05
t_R(BG)
t_F(BG)
ADC Inputs
BGATE Rise Time
BGATE Fall Time
C_LOAD = 1.6nF, 10% to 90%
C_LOAD = 1.6nF, 10% to 90%
30
65
ns
10
25
ns
I_LEAK
Analog Channel Leakage
Charger Thresholds
0V < V_CELL < 2V, 0V < V_TEMP < 2V
±100
nA
V_BP
V_BOV
V_MFC
V_FCBF
∆V_V(TERM)
Battery Present Threshold Voltage
Battery Overvoltage
Minimum Fast Charge Voltage
Fast Charge Battery Fault Voltage
–∆V Termination
CHEM = Open (NiCd)
CHEM = 0V (NiMH)
● 340
350
360
mV
● 1.9
1.95
2
V
● 875
900
925
mV
● 1.17
1.22
1.27
V
● 18
● 8.5
20
22.0
mV
10
11.5
mV
V_AR
∆V_T(TERM)
Automatic Recharge Voltage
∆T Termination (Note 7)
V_CELL Decreasing
CHEM = Open (NiCd)
CHEM = 0V (NiMH)
● 1.275
● 1.84
● 0.86
1.325
2
1
1.375
2.16
1.14
V
°C/MIN
°C/MIN
V_T(MIN)
Minimum Charging Temperature
(Note 7)
V_TEMP Increasing
●3
5
7
°C
V_T(MAXI)
Maximum Charge Initiation
Temperature (Note 7)
V_TEMP Decreasing, Not Charging
● 43
45
47
°C
V_T(MAXC)
Maximum Charging Temperature
(Note 7)
V_TEMP Decreasing, Charging
● 58
60
62
°C
V_TEMP(D)
V_TEMP(P)
Charger Timing
V_TEMP Disable Threshold Voltage
Pause Threshold Voltage
● 2.85
● 160
3.3
V
280
mV
∆t_TIMER
∆t_MAX
Internal Time Base Error
Programmable Timer Error
R_TIMER = 49.9k
● –10
● –15
10
%
15
%
4010p
3