Datasheet

LTC3566/LTC3566-2
8
3566fb
I
LOAD
(mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3566 G25
0
1
V
OUT1
= 3.3V
T
A
= 27°C
TYPE 3 COMPENSATION
Burst Mode
OPERATION
CURVES
PWM MODE
CURVES
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
V
IN1
(V)
2.7
EFFICIENCY (%)
60
80
100
4.3
3566 G26
40
20
50
70
90
30
10
0
3.1
3.5
3.9
4.7
I
LOAD
= 50mA
I
LOAD
= 200mA
I
LOAD
= 1000mA
V
OUT1
= 3.3V
T
A
= 27°C
TYPE 3 COMPENSATION
I
LOAD
(mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3566 G27
0
1
V
OUT1
= 5V
T
A
= 27°C
TYPE 3 COMPENSATION
Burst Mode OPERATION
CURVES
PWM MODE
CURVES
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
TEMPERATURE (°C)
–55
0
PMOS R
DS(ON)
(Ω)
NMOS R
DS(ON)
(Ω)
0.05
0.15
0.20
0.25
–15
25
45 125
3566 G22
0.10
–35 5
65
85
105
0.30
0.10
0.15
0.25
0.30
0.35
0.20
0.40
PMOS V
IN1
= 3V
PMOS V
IN1
= 3.6V
PMOS V
IN1
= 4.5V
NMOS V
IN1
= 3V
NMOS V
IN1
= 3.6V
NMOS V
IN1
= 4.5V
TEMPERATURE (°C)
–55
2300
I
LIMF
(mA)
2350
2450
2500
2550
–15
25
45 125
3566 G23
2400
–35 5
65
85
105
2600
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
TEMPERATURE (°C)
–55
11.0
I
Q
(μA)
11.5
12.5
13.0
13.5
–15
25
45 125
3566 G24
12.0
–35 5
65
85
105
14.0
V
IN1
= 3V
V
IN1
= 3.6V
V
IN1
= 4.5V
V
OUT1
= 3.3V
CHRG PIN VOLTAGE (V)
0
CHRG PIN CURRENT (mA)
60
80
100
4
3566 G19
40
20
0
1
2
3
5
V
BUS
= 5V
BAT = 3.8V
TEMPERATURE (°C)
–40
BATTERY CURRENT (μA)
30
40
50
60
3566 G21
20
10
0
–15
10
35
85
BAT = 3.8V
V
BUS
= 0V
BUCK REGULATORS OFF
TYPICAL PERFORMANCE CHARACTERISTICS
CHRG Pin Current vs Voltage
(Pull-Down State)
Battery Drain Current vs
Temperature
R
DS(ON)
for Buck-Boost Regulator
Power Switches vs Temperature
Buck-Boost Regulator Current
Limit vs Temperature
Buck-Boost Regulator Burst Mode
Operation Quiescent Current
Buck-Boost Regulator PWM Mode
Effi ciency
Buck-Boost Regulator PWM
Effi ciency vs V
IN1
Buck-Boost Regulator vs I
LOAD
T
A
= 25°C unless otherwise noted.
TEMPERATURE (°C)
–40
QUIESCENT CURRENT (μA)
50
60
60
3566 G18
40
30
–15
10
35
85
70
I
VOUT
= 0μA
V
BUS
Quiescent Current in
Suspend vs Temperature