ltc3566 Linear Technology Corporation, ltc3566 Datasheet - Page 8

• Manufacturer Part Number: ltc3566
• Description: High Ef?ciency Usb Power Manager Plus 1a Buck-boost Converter
• Manufacturer: Linear Technology Corporation

LTC3566
TYPICAL PERFORMANCE CHARACTERISTICS
8
0.20
0.10
0.30
0.25
0.15
0.05
100
100
80
40
20
60
90
80
70
60
50
40
30
20
10
0
0
0
–55
0.1
0
CHRG Pin Current vs Voltage
(Pull-Down State)
R
Power Switches vs Temperature
Buck-Boost Regulator PWM Mode
Effi ciency
V
BAT = 3.8V
PMOS V
PMOS V
BUS
DS(ON)
PMOS V
–35
V
V
V
IN1
IN1
IN1
= 5V
OPERATION
Burst Mode
–15
1
CURVES
IN1
IN1
NMOS V
NMOS V
= 3V
= 3.6V
= 4.5V
for Buck-Boost Regulator
IN1
1
CHRG PIN VOLTAGE (V)
NMOS V
= 3.6V
= 4.5V
TEMPERATURE (°C)
= 3V
5
2
I
IN1
IN1
LOAD
25
IN1
= 3.6V
= 4.5V
TYPE 3 COMPENSATION
10
= 3V
(mA)
45
3
65
PWM MODE
CURVES
V
V
V
V
100
IN1
IN1
IN1
OUT1
85 105
T
4
= 3V
= 3.6V
= 4.5V
A
= 27°C
= 3.3V
3566 G19
3566 G22
3566 G25
1000
125
5
0.30
0.20
0.10
0.40
0.35
0.25
0.15
AC COUPLED
20mV/DIV
5mA/DIV
V
I
LDO3V3
LDO3V3
2500
2450
2400
2300
2600
2550
2350
0mA
100
90
80
70
60
50
40
30
20
10
0
–55
2.7
3.3V LDO Step Response
(5mA to 15mA)
BAT = 3.8V
Buck-Boost Regulator Current
Limit vs Temperature
Buck-Boost Regulator PWM
Effi ciency vs V
V
T
TYPE 3 COMPENSATION
A
OUT1
–35
= 27°C
3.1
= 3.3V
–15
V
V
V
IN1
IN1
IN1
TEMPERATURE (°C)
= 3.6V
= 4.5V
5
3.5
= 3V
20μs/DIV
25
V
IN1
IN1
3.9
(V)
45
I
I
I
65
LOAD
LOAD
LOAD
4.3
85 105
= 50mA
= 200mA
= 1000mA
T
A
4.7
= 25°C unless otherwise noted.
3566 G23
3566 G26
3566 G2
125
13.0
12.5
12.0
11.0
14.0
13.5
11.5
100
90
80
70
60
50
40
30
20
10
50
40
20
10
30
0
0
–40
–55
0.1
Battery Drain Current vs
Temperature
Buck-Boost Regulator Burst Mode
Operation Quiescent Current
Buck-Boost Regulator vs I
Burst Mode OPERATION
CURVES
V
BAT = 3.8V
V
BUCK REGULATORS OFF
OUT1
BUS
–35
V
V
V
= 0V
IN1
IN1
IN1
= 3.3V
–15
–15
= 3V
= 3.6V
= 4.5V
1
TEMPERATURE (°C)
TEMPERATURE (°C)
5
10
I
LOAD
25
V
V
IN1
IN1
TYPE 3 COMPENSATION
10
(mA)
45
= 4.5V
= 3.6V
35
PWM MODE
65
CURVES
V
V
V
V
IN1
IN1
IN1
IN1
100
V
85 105
LOAD
OUT1
T
= 3V
= 3.6V
= 4.5V
60
= 3V
A
= 27°C
3566 G24
= 5V
3566 G27
3566 G21
3566p
1000
125
85