LTC3586-2 Datasheet, PDF (7/36 Pages) –

LTC3586-2/LTC3586-3
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C unless otherwise noted)
Ideal Diode V-I Characteristics
1.0
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
0.8
EXTERNAL VISHAY
Si2333 PMOS
0.6
INTERNAL IDEAL
DIODE ONLY
0.4
0.2
0
0
V_BUS = 0V
V_BUS = 5V
0.04 0.08 0.12 0.16 0.20
FORWARD VOLTAGE (V)
358623 G01
Ideal Diode Resistance
vs Battery Voltage
0.25
0.20
INTERNAL IDEAL DIODE
0.15
0.10
0.05
0
2.7
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
358623 G02
Output Voltage vs Output Current
(Battery Charger Disabled)
4.50
BAT = 4V
V_BUS = 5V
5x MODE
4.25
4.00
BAT = 3.4V
3.75
3.50
3.25
0
200 400 600 800
OUTPUT CURRENT (mA)
1000
358623 G03
USB Limited Battery Charge
Current vs Battery Voltage
700
LTC3586-2
600
500
V_BUS = 5V
R_PROG = 1k
400
R_CLPROG = 3k
300
LTC3586-3
200
100
5x USB SETTING,
0 ^{BATTERY CHARGER SET FOR 1A}
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
358623 G04
USB Limited Battery Charge
Current vs Battery Voltage
150
LTC3586-2
125
100
75
LTC3586-3
50 _{VBUS = 5V}
R_PROG = 1k
25 ^RCLPROG ^{= 3k}
1x USB SETTING,
BATTERY CHARGER SET FOR 1A
0
2.7 3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
358623 G05
Battery Drain Current
vs Battery Voltage
25
I_VOUT = 0µA
20
V_BUS = 0V
15
10
V_BUS = 5V
5
(SUSPEND MODE, R_CLPROG = 3.01k)
0
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
358623 G06
PowerPath Switching Regulator
Efficiency vs Output Current
100 _{BAT = 3.8V}
1x MODE
90
5x, 10x MODE
80
70
Battery Charging Efficiency vs
Battery Voltage with No External
Load (P_BAT/P_BUS)
100
90 _{1x CHARGING EFFICIENCY}
5x CHARGING EFFICIENCY
80
60
50
40
0.01
0.1
OUTPUT CURRENT (A)
1
358623 G07
70
60
2.7
R_CLPROG = 3.01k
R_PROG = 1k
I_VOUT = 0mA
3
3.3
3.5
3.9
4.2
BATTERY VOLTAGE (V)
358623 G08
358623f
7