Datasheet

LTC4160/LTC4160-1
4
41601fa
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
PROG
PROG Pin Servo Voltage 1 V
V
PROG_TRKL
PROG Pin Servo Voltage in Trickle Charge BAT < V
TRKL
0.1 V
V
C/10
C/10 Threshold Voltage at PROG 100 mV
h
PROG
Ratio of I
BAT
to PROG Pin Current 1030 mA/mA
I
TRKL
Trickle Charge Current BAT < V
TRKL
100 mA
V
TRKL
Trickle Charge Threshold Voltage BAT Rising 2.7 2.85 3 V
∆V
TRKL
Trickle Charge Hysteresis Voltage 135 mV
∆V
RECHRG
Recharge Battery Threshold Voltage Threshold Voltage Relative to V
FLOAT
–75 –100 –125 mV
t
TERM
Safety Timer Termination Period Timer Starts when V
BAT
= V
FLOAT
3.9 4.3 5.4 Hour
t
BADBAT
Bad Battery Termination Time BAT < V
TRKL
0.4 0.5 0.6 Hour
h
C/10
End of Charge Current Ratio (Note 7) 0.085 0.1 0.115 mA/mA
R
ON_CHG
Battery Charger Power FET
On-Resistance (Between V
OUT
and BAT)
0.18 Ω
T
LIM
Junction Temperature in Constant
Temperature Mode
110 °C
NTC
V
COLD
Cold Temperature Fault Threshold
Voltage
Rising Threshold
Hysteresis
75 76.5
1.5
78 %NTCBIAS
%NTCBIAS
V
HOT
Hot Temperature Fault Threshold Voltage Falling Threshold Hysteresis 33.4 34.9
1.8
36.4 %NTCBIAS
%NTCBIAS
V
DIS
NTC Disable Threshold Voltage Falling Threshold
Hysteresis
0.7 1.7
50
2.7 %NTCBIAS
mV
I
NTC
NTC Leakage Current NTC = NTCBIAS = 5V –50 50 nA
Ideal Diode
V
FWD
Forward Voltage Detection V
BUS
= 0V, I
VOUT
= 10mA
I
VOUT
= 10mA
2
15
mV
mV
R
DROPOUT
Internal Diode On-Resistance, Dropout I
VOUT
= 200mA 0.18 Ω
I
MAX_DIODE
Diode Current Limit 2 A
Always On 3.3V LDO Supply
V
LDO3V3
Regulated Output Voltage 0mA < I
LDO3V3
< 20mA 3.1 3.3 3.5 V
R
CL_LDO3V3
Closed-Loop Output Resistance 2.7 Ω
R
OL_LDO3V3
Dropout Output Resistance 23 Ω
Logic (I
LIM0
, I
LIM1
, ID, ENOTG, ENCHARGER)
V
IL
Logic Low Input Voltage 0.4 V
V
IH
Logic High Input Voltage 1.2 V
I
PD1
I
LIM0
, I
LIM1
, ENOTG, ENCHARGER
Pull-Down Current
1.8 µA
I
PU1
ID Pull-Up Current 2.5 µA
Status Outputs (CHRG, VBUSGD, FAULT)
V
VBUSGD
Output Low Voltage I
VBUSGD
= 5mA, V
BUS
= 5V 65 100 mV
V
CHRG
, V
FAULT
Output Low Voltage I
CHRG
= I
FAULT
= 5mA, V
OUT
= 3.8V 100 150 mV
I
CHRG
, I
VBUSGD
,
I
FAULT
Leakage Current V
CHRG
= V
VBUSGD
= V
FAULT
= 5V 1 μA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
BUS
= 5V, BAT = 3.8V, R
CLPROG
= 3.01k, unless otherwise noted.