Datasheet

LTC4067
3
4067f
The ● denotes the specifi cations which apply over the full operating
temperature range (Note 3), otherwise specifi cations are at T
A
= 25°C. Note 2 unless otherwise noted, V
IN
= 5V, V
BAT
= 3.7V,
V
ILIM0
= 0V, V
ILIM1
= 0V, R
PROG
= 2k, R
CLPROG
= 2k, V
OVI
= 0V, V
NTC
= V
IN
/2.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IUVLO
IN Undervoltage Lockout Rising Threshold
Falling Threshold
●
3.5
3.8
3.675
4V
V
V
BUVLO
BAT Undervoltage Lockout Rising Threshold
Falling Threshold 2.5
2.8
2.7
3V
Current Limit
R
FWD,IN
On-Resistance of Input Power FET I
OUT
= 200mA 220 mΩ
I
LIM
Input Current Limit HPWR Mode: V
ILIM0
= V
ILIM1
= 5V
LPWR Mode
●
●
475
90
500
98
525
110
mA
mA
V
CLPROG
CLPROG Pin Servo Voltage HPWR Mode: V
ILIM0
= V
ILIM1
= V
CC
, V
OUT
= 4V
LPWR Mode : V
OUT
= 4V
●
●
0.95
0.18
1
0.2
1.05
0.22
V
V
I
SS
Soft Start Inrush Current R
CLPROG
= 4k, Short at OUT (Note 8) 0.3 mA/μs
Battery Charger
V
FLOAT
Regulated Output Voltage I
BAT
= –2mA
(0°C – 85°C); I
BAT
= –2mA
4.185
4.167
4.2
4.2
4.215
4.234
V
V
I
CC-CHG
Constant-Current Mode Charge
Current
R
PROG
= 2k, No Load at OUT
R
PROG
= 1k, No Load at OUT, R
CLPROG
= 1k
●
●
470
940
500
1000
530
1060
mA
mA
I
CHG(MAX)
Maximum Charge Current R
PROG
= R
CLPROG
= 0 (Note 7) 2 A
V
PROG
PROG Pin Servo Voltage R
PROG
= 2k; I
BAT
= –500mA
R
PROG
= 1k; I
BAT
= –1A
R
PROG
= 2k, V
BAT
< V
TRIKL
, I
BAT
= I
TRIKL
●
●
980
980
90
1000
1000
100
1020
1020
110
mV
mV
mV
I
EOC
End-of-Charge BAT Current V
BAT
= 4.2V; As A Ratio to Full BAT Charge Current
(I
CC-CHG
)
0.08 0.093 0.106 mA/mA
I
TRIKL
Trickle Charge Current V
BAT
= 2V 35 50 60 mA
V
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
●
65 100 135 mV
t
TIMER
TIMER Period 1.7 2 2.3 hrs
Low Battery Trickle Charge Time Percent of Total Charge Time, V
BAT
< 2.8V 25 %
T
LIM
Junction Temperature in Constant
Temperature Mode
(Note 4) 105 °C
Ideal Diode
R
FWD
On-Resistance, V
ON
Regulation V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= –200mA,
Measured as ΔV/ΔI
200 mΩ
R
DIO,ON
On-Resistance V
BAT
to V
OUT
V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= –1A 220 mΩ
V
FWD
Voltage Forward Drop (V
BAT
– V
OUT
)V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= –1mA
V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= –200mA
V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= –1A
●
10 25
70
240
40 mV
mV
mV
I
D(MAX)
Ideal Diode Current Limit V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V (Notes 4, 5) 1.5 2.1 A
I
GPU
GATE Pin Output Pull Up Current V
OUT
> V
BAT
, V
GATE
= 0V 1.9 mA
I
GPD
GATE Pin Output Pull Down Current V
ILIM0
= 0V, V
ILIM1
= 5V, V
BAT
= 4.3V, I
OUT
= 1A,
V
GATE
= 4.3V
1.9 mA