Datasheet

LTC4160/LTC4160-1
6
41601fa
TYPICAL PERFORMANCE CHARACTERISTICS
Battery Charge Current vs V
OUT
Voltage
V
OUT
Voltage vs Battery Voltage
(Charger Overprogrammed)
V
OUT
Voltage vs Load Current
(Battery Charger Enabled)
PowerPath Switching Regulator
Transient Response
PowerPath Switching Regulator
Efficiency vs Load Current
Battery Charging Efficiency vs
Battery Voltage with No External
Load (P
BAT
/P
VBUS
)
Ideal Diode V-I Characteristics
Ideal Diode Resistance
vs Battery Voltage
V
OUT
Voltage vs Load Current
(Battery Charger Disabled)
T
A
= 25°C, unless otherwise noted.
FORWARD VOLTAGE (V)
0
CURRENT (A)
0.6
0.8
1.0
0.16
41601 G07
0.4
0.2
0
0.04
0.08
0.12
0.20
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
INTERNAL IDEAL
DIODE ONLY
V
BUS
= 5V
BATTERY VOLTAGE (V)
2.7
RESISTANCE (Ω)
0.15
0.20
0.25
3.9
41601 G08
0.10
0.05
0
3.0
3.3
3.6
4.2
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
INTERNAL IDEAL
DIODE
LOAD CURRENT (mA)
0
V
OUT
(V)
4.00
4.25
4.50
800
41601 G09
3.75
3.00
2.75
3.50
2.50
3.25
200
400
600
1000
BAT = 4V
BAT = 3.4V
BAT = 2.8V
V
BUS
= 5V
R
CLPROG
= 3.01k
R
PROG
= 2k
V
OUT
(V)
3.40
0
BATTERY CURRENT (mA)
100
200
300
400
3.50 3.60
3.70
3.80
41601 G10
500
600
3.45 3.55
3.65
3.75
R
CLPROG
= 3.01k
R
PROG
= 2k
5x MODE
BATTERY VOLTAGE (V)
2.7
V
OUT
(V)
3.9
4.3
4.7
3.9
41601 G11
3.5
3.1
3.7
4.1
4.5
3.3
2.9
2.7
3.0
3.3
3.6
4.2
5x MODE
1x MODE
V
BUS
= 5V
I
VOUT
= 0µA
R
CLPROG
= 3.01k
R
PROG
= 1k
BATTERY VOLTAGE
LOAD CURRENT (mA)
0
V
OUT
(V)
800
41601 G12
200
400
600
1000
BAT = 4V
BAT = 3.4V
BAT = 2.8V
V
BUS
= 5V
R
CLPROG
= 3.01k
R
PROG
= 2k
4.00
4.25
4.50
3.75
3.00
2.75
3.50
2.50
3.25
V
OUT
50mV/DIV
AC-COUPLED
I
VOUT
500mA/DIV
0mA
20µs/DIV
41601 G13
V
BUS
= 5V
V
OUT
= 3.65V
CHARGER OFF
10x MODE
LOAD CURRENT (mA)
30
60
50
40
100
90
80
70
41601 G14
EFFICIENCY (%)
10
1000
100
1x MODE
5x, 10x MODE
BATTERY VOLTAGE (V)
2.7
50
EFFICIENCY (%)
55
65
70
75
3.3
3.9
4.2
95
41601 G15
60
3.0 3.6
80
85
90
R
CLPROG
= 3.01k
R
PROG
= 1k
1x MODE
5x MODE