English
Language : 

LTC3566-2_15 Datasheet, PDF (8/28 Pages) Linear Technology – High Efficiency USB Power Manager Plus 1A Buck-Boost Converter
◁
LTC3566/LTC3566-2
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
VBUS Quiescent Current in
Suspend vs Temperature
70
IVOUT = 0μA
60
50
40
CHRG Pin Current vs Voltage
(Pull-Down State)
100 VBUS = 5V
BAT = 3.8V
80
60
40
20
Battery Drain Current vs
Temperature
50
BAT = 3.8V
VBUS = 0V
BUCK REGULATORS OFF
40
30
20
10
30
–40
–15 10
35
60
85
TEMPERATURE (°C)
3566 G18
RDS(ON) for Buck-Boost Regulator
Power Switches vs Temperature
0.30
0.40
PMOS VIN1 = 3V
0.25
PMOS VIN1 = 3.6V
PMOS VIN1 = 4.5V
0.35
0.20
0.30
NMOS VIN1 = 3V
0.15
NMOS VIN1 = 3.6V
0.25
NMOS VIN1 = 4.5V
0.10
0.20
0.05
0.15
0
0.10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3566 G22
Buck-Boost Regulator PWM Mode
Efficiency
100
90
80
Burst Mode
OPERATION
70
CURVES
60
VIN1 = 3V
VIN1 = 3.6V
50
VIN1 = 4.5V
40
PWM MODE
CURVES
VIN1 = 3V
VIN1 = 3.6V
VIN1 = 4.5V
30
20
10
0
0.1
VOUT1 = 3.3V
TA = 27°C
TYPE 3 COMPENSATION
1
10
100
1000
ILOAD (mA)
3566 G25
8
0
0
1
2
3
4
5
CHRG PIN VOLTAGE (V)
3566 G19
0
–40 –15 10
35
60
85
TEMPERATURE (°C)
3566 G21
Buck-Boost Regulator Current
Limit vs Temperature
2600
VIN1 = 3V
2550
2500
VIN1 = 3.6V
VIN1 = 4.5V
2450
2400
Buck-Boost Regulator Burst Mode
Operation Quiescent Current
14.0
VOUT1 = 3.3V
13.5
VIN1 = 4.5V
13.0
VIN1 = 3V
12.5
VIN1 = 3.6V
12.0
2350
11.5
2300
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3566 G23
11.0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3566 G24
Buck-Boost Regulator PWM
Efficiency vs VIN1
100
90
80
70
60
ILOAD = 50mA
ILOAD = 200mA
50
ILOAD = 1000mA
40
30
20 VOUT1 = 3.3V
10 TA = 27°C
TYPE 3 COMPENSATION
0
2.7 3.1 3.5 3.9 4.3
VIN1 (V)
4.7
3566 G26
Buck-Boost Regulator vs ILOAD
100 Burst Mode OPERATION
90 CURVES
80
70
60
50
40
VIN1 = 3V
VIN1 = 3.6V
30
VIN1 = 4.5V
PWM MODE
CURVES
VIN1 = 3V
VIN1 = 3.6V
VIN1 = 4.5V
20
10
0
0.1
VOUT1 = 5V
TA = 27°C
TYPE 3 COMPENSATION
1
10
100
1000
ILOAD (mA)
3566 G27
3566fb
 ▷