LTC4000_15 Datasheet, PDF (4/40 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
Charge Termination
V_CX,IBMON(OS)
V_{CX,IBMON(HYS)}
CX Pin Pull-Up Current
CX Comparator Offset Voltage, IBMON Falling
CX Comparator Hysteresis Voltage
TMR Pull-Up Current
TMR Pull-Down Current
TMR Pin Frequency
TMR Threshold for CX Termination
V_CX = 0.1V
V_CX = 0.1V
V_TMR = 0V
V_TMR = 2V
C_TMR = 0.01μF
l –5.5
–5.0
–4.5
µA
l 0.5
10
25
mV
5
mV
–5.0
μA
5.0
μA
400
500
600
Hz
l
2.1
2.5
V
t_T
t_T/t_BB
Charge Termination Time
C_TMR = 0.1μF
Ratio of Charge Terminate Time to Bad Battery C_TMR = 0.1μF
Indicator Time
l 2.3
2.9
3.5
h
l 3.95
4
4.05
h/h
V_NTC(COLD)
NTC Cold Threshold
V_NTC(HOT)
NTC Hot Threshold
V_NTC(HYS)
NTC Thresholds Hysteresis
V_NTC(OPEN)
NTC Open Circuit Voltage
R_NTC(OPEN)
NTC Open Circuit Input Resistance
Voltage Monitoring and Open Drain Status Pins
V_NTC Rising, % of V_BIAS
V_NTC Falling, % of V_BIAS
% of V_BIAS
% of V_BIAS
l 73
75
77
%
l 33
35
37
%
5
%
l 45
50
55
%
300
kΩ
V_VM(TH)
V_VM(HYS)
VM Input Falling Threshold
VM Input Hysteresis
VM Input Current
I_{RST,CHRG,FLT(LKG)} Open Drain Status Pins Leakage Current
V_{RST,CHRG,FLT(VOL)} Open Drain Status Pins Voltage Output Low
Input PowerPath Control
V_VM = 1.2V
V_PIN = 60V
I_PIN = 1mA
l 1.176 1.193 1.204
V
40
mV
±0.1
µA
±1
µA
l
0.4
V
Input PowerPath Forward Regulation Voltage V_IID,CSP, 3V ≤ V_CSP ≤ 60V
l 0.1
8
20
mV
Input PowerPath Fast Reverse Turn-Off
Threshold Voltage
V_IID,CSP, 3V ≤ V_CSP ≤ 60V,
V_IGATE = V_CSP – 2.5V,
∆I_IGATE/∆ V_IID,CSP ≥ 100μA/mV
l –90
–50
–20
mV
Input PowerPath Fast Forward Turn-On
Threshold Voltage
V_IID,CSP, 3V ≤ V_CSP ≤ 60V,
V_IGATE = V_IID – 1.5V,
∆I_IGATE/∆ V_IID,CSP ≥ 100μA/mV
l 40
80
130
mV
Input Gate Turn-Off Current
V_IID = V_CSP, V_IGATE = V_CSP – 1.5V
–0.3
μA
Input Gate Turn-On Current
V_CSP = V_IID – 20mV,
V_IGATE = V_IID – 1.5V
0.3
μA
I_{IGATE(FASTOFF)} Input Gate Fast Turn-Off Current
V_CSP = V_IID + 0.1V,
V_IGATE = V_CSP – 3V
–0.5
mA
I_{IGATE(FASTON)}
Input Gate Fast Turn-On Current
V_CSP = V_IID – 0.2V,
V_IGATE = V_IID – 1.5V
0.7
mA
V_IGATE(ON)
Input Gate Clamp Voltage
I_IGATE = 2µA, V_IID = 12V to 60V,
l
V_CSP = V_IID – 0.5V, Measure
V_IID – V_IGATE
13
15
V
Input Gate Off Voltage
I_IGATE = – 2μA, V_IID = 3V to 59.9V, l
V_CSP = V_IID + 0.5V, Measure
V_CSP – V_IGATE
0.45
0.7
V
4000fb
4
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