LTC4000_15 Datasheet, PDF (3/40 Pages) Linear Technology – High Voltage High Current Controller for Battery Charging and Power Management

LTC4000
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_{BFB_REG}
Battery Feedback Voltage
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 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_IL
Pull-Up Current for the Input Current Limit
Programming Pin
l –55
–50
–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
A4, A5 Error Amp Offset for the Current Loops V_CL = 0.8V, V_IL = 0.8V
(See Figure 1)
l –10
0
10
mV
Maximum Programmable Current Limit
Voltage Range
l 0.985
1.0
1.015
V
For more information www.linear.com/LTC4000
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