LTC3567 Datasheet, PDF (7/28 Pages) Linear Technology – High Effi ciency USB Power Manager Plus 1A Buck-Boost Converter with I2C Control

LTC3567
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
PowerPath Switching Regulator
Efficiency vs Output Current
100 _{BAT = 3.8V}
1x MODE
90
5x, 10x MODE
80
70
60
50
Battery Charging Efficiency vs
Battery Voltage with No External
Load (P_BAT/P_BUS)
100
R_CLPROG = 3.01k
R_PROG = 1k
I_VOUT = 0mA
5x CHARGING
EFFICIENCY
90
1x CHARGING
EFFICIENCY
80
70
V_BUS Current vs V_BUS Voltage
(Suspend)
50
BAT = 3.8V
I_VOUT = 0mA
40
30
20
10
40
0.01
0.1
OUTPUT CURRENT (A)
1
3567 G07
60
2.7
3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
3567 G08
0
0
1
2
3
4
5
BUS VOLTAGE (V)
3567 G09
Output Voltage vs Load Current in
Suspend
5.0
4.5
V_BUS Current vs Load Current in
Suspend
0.5
V_BUS = 5V
BAT = 3.3V
0.4 ^{RCLPROG = 2.94k}
3.3V LDO Output Voltage
vs Load Current, V_BUS = 0V
3.4
BAT = 3.9V, 4.2V
BAT = 3.5V
BAT = 3.4V
BAT = 3.6V
3.2
4.0
3.5
3.0 _{VBUS = 5V}
BAT = 3.3V
R_CLPROG = 2.94k
2.5
0
0.1 0.2 0.3 0.4 0.5
LOAD CURRENT (mA)
3567 G10
0.3
0.2
0.1
0
0
0.1 0.2 0.3 0.4 0.5
LOAD CURRENT (mA)
3567 G11
3.0
2.8 ^{BAT = 3V}
BAT = 3.1V
BAT = 3.2V
2.6
0
BAT = 3.3V
5
10
15
20
25
LOAD CURRENT (mA)
3567 G12
Battery Charge Current
vs Temperature
600
500
400
THERMAL REGULATION
300
Battery Charger Float Voltage
vs Temperature
4.21
4.20
4.19
Low-Battery (Instant-On) Output
Voltage vs Temperature
3.68
BAT = 2.7V
I_VOUT = 100mA
5x MODE
3.66
3.64
200
100
R_PROG = 2k
10x MODE
0
–40 –20 0
20 40
60 80
TEMPERATURE (°C)
100 120
3567 G13
4.18
4.17
–40
–15 10
35
60
85
TEMPERATURE (°C)
3567 G14
3.62
3.60
–40
–15 10
35
60
85
TEMPERATURE (°C)
3567 G15
3567f
7