Linear Technology LTC4000, Техническое описание

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LTC4000
4
4000fb
For more information www.linear.com/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
CX Pin Pull-Up Current V
CX
= 0.1V
l
–5.5 –5.0 –4.5 µA
V
CX,IBMON(OS)
CX Comparator Offset Voltage, IBMON Falling V
CX
= 0.1V
l
0.5 10 25 mV
V
CX,IBMON(HYS)
CX Comparator Hysteresis Voltage 5 mV
TMR Pull-Up Current V
TMR
= 0V –5.0 μA
TMR Pull-Down Current V
TMR
= 2V 5.0 μA
TMR Pin Frequency C
TMR
= 0.01μF 400 500 600 Hz
TMR Threshold for CX Termination
l
2.1 2.5 V
t
T
Charge Termination Time C
TMR
= 0.1μF
l
2.3 2.9 3.5 h
t
T
/t
BB
Ratio of Charge Terminate Time to Bad Battery
Indicator Time
C
TMR
= 0.1μF
l
3.95 4 4.05 h/h
V
NTC(COLD)
NTC Cold Threshold V
NTC
Rising, % of V
BIAS
l
73 75 77 %
V
NTC(HOT)
NTC Hot Threshold V
NTC
Falling, % of V
BIAS
l
33 35 37 %
V
NTC(HYS)
NTC Thresholds Hysteresis % of V
BIAS
5 %
V
NTC(OPEN)
NTC Open Circuit Voltage % of V
BIAS
l
45 50 55 %
R
NTC(OPEN)
NTC Open Circuit Input Resistance 300 kΩ
Voltage Monitoring and Open Drain Status Pins
V
VM(TH)
VM Input Falling Threshold
l
1.176 1.193 1.204 V
V
VM(HYS)
VM Input Hysteresis 40 mV
VM Input Current V
VM
= 1.2V ±0.1 µA
I
RST , CHRG , FLT (LKG)
Open Drain Status Pins Leakage Current V
PIN
= 60V ±1 µA
V
RST , CHRG , FLT (VOL)
Open Drain Status Pins Voltage Output Low I
PIN
= 1mA
l
0.4 V
Input PowerPath Control
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,
V
CSP
= V
IID
– 0.5V, Measure
V
IID
– V
IGATE
l
13 15 V
Input Gate Off Voltage I
IGATE
= – 2μA, V
IID
= 3V to 59.9V,
V
CSP
= V
IID
+ 0.5V, Measure
V
CSP
– V
IGATE
l
0.45 0.7 V