LTC4000-1 Datasheet, PDF (3/40 Pages) Linear Technology – High Voltage High Current Controller for Battery Charging with Maximum Power Point Control

LTC4000-1
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C. V_IN = V_CLN = 3V to 60V unless otherwise noted (Notes 2, 3).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V_IN
I_IN
I_BAT
Shutdown
Input Supply Operating Range
Input Quiescent Operating Current
Battery Pin Operating Current
Battery Only Quiescent Current
V_IN ≥ 3V, V_CSN = V_CSP ≥ V_BAT
V_IN = 0V, V_CSN = V_CSP ≤ V_BAT
l
3
l
l
60
V
0.4
mA
50
100
µA
10
20
μA
ENC Input Voltage Low
l
0.4
V
ENC Input Voltage High
l 1.5
V
ENC Pull-Up Current
ENC Open Circuit Voltage
Voltage Regulation
V_ENC = 0V
V_ENC = Open
–4
–2
–0.5
µA
l 1.5
2.5
V
V_{IFB_REG}
V_{BFB_REG}
Input Feedback Voltage
IFB Input Current
Battery Feedback Voltage
V_IFB = 1.0V
l 0.985 1.000 1.010
V
± 0.1
µA
1.133 1.136 1.139
V
l 1.120 1.136 1.147
V
BFB Input Current
V_BFB = 1.2V
V_{OFB_REG}
Output Feedback Voltage
OFB Input Current
V_OFB = 1.2V
R_FBG
Ground Return Feedback Resistance
V_RECHRG(RISE) Rising Recharge Battery Threshold Voltage % of V_{BFB_REG}
V_RECHRG(HYS)
Recharge Battery Threshold Voltage Hysteresis % of V_{BFB_REG}
V_{OUT(INST_ON)} Instant-On Battery Voltage Threshold
% of V_{BFB_REG}
V_LOBAT
Falling Low Battery Threshold Voltage
% of V_{BFB_REG}
V_LOBAT(HYS)
Low Battery Threshold Voltage Hysteresis
% of V_{BFB_REG}
Current Monitoring and Regulation
± 0.1
µA
l 1.176 1.193 1.204
V
± 0.1
µA
l
100
400
Ω
l 96.9
97.6
98.3
%
0.5
%
l 82
86
90
%
l 65
68
71
%
3
%
Ratio of Monitored-Current Voltage to Sense V_IN,CLN ≤ 50mV, V_IIMON/V_IN,CLN
l 18.5
20
21
V/V
Voltage
V_CSP,CSN ≤ 50mV, V_IBMON/V_CSP,CSN
V_OS
Sense Voltage Offset
V_CSP,CSN ≤ 50mV, V_CSP = 60V or
V_IN,CLN ≤ 50mV, V_IN = 60V (Note 4)
–300
300
µV
CLN, CSP, CSN Common Mode Range
(Note 4)
l
3
60
V
CLN Pin Current
±1
µA
CSP Pin Current
V_IGATE = Open, V_IID = 0V
90
μA
CSN Pin Current
V_BGATE = Open, V_BAT = 0V
45
μA
I_CL
Pull-Up Current for the Charge Current Limit
Programming Pin
l –55
–50
–45
μA
I_{CL_TRKL}
Pull-Up Current for the Charge Current Limit V_BFB < V_LOBAT
Programming Pin in Trickle Charge Mode
l –5.5
–5.0
–4.5
μA
Input Current Monitor Resistance to GND
40
90
140
kΩ
Charge Current Monitor Resistance to GND
40
90
140
kΩ
A5 Error Amp Offset for the Charge Current
Loop (See Figure 1)
V_CL = 0.8V
l –10
0
10
mV
Maximum Programmable Current Limit
Voltage Range
l 0.985
1.0
1.015
V
40001f
3