LTC3567 Datasheet, PDF (8/28 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.
Oscillator Frequency
vs Temperature
2.6
2.4
BAT = 3.6V
V_BUS = 5V
V_BUS = 0V
2.2
2.0
1.8
–40
BAT = 3V
V_BUS = 0V
BAT = 2.7V
V_BUS = 0V
–15 10
35
60
85
TEMPERATURE (°C)
3567 G16
CHRG Pin Current vs Voltage
(Pull-Down State)
100 _{VBUS = 5V}
BAT = 3.8V
80
V_BUS Quiescent Current
vs Temperature
15
V_BUS = 5V
I_VOUT = 0μA
5x MODE
12
V_BUS Quiescent Current in
Suspend vs Temperature
70
I_VOUT = 0μA
60
9
50
1x MODE
6
40
3
–40 –15 10
35
60
85
TEMPERATURE (°C)
3567 G17
3.3V LDO Step Response
(5mA to 15mA)
I_LDO3V3
5mA/DIV
30
–40
–15 10
35
60
85
TEMPERATURE (°C)
3567 G18
Battery Drain Current
vs Temperature
50
BAT = 3.8V
V_BUS = 0V
BUCK REGULATORS OFF
40
60
0mA
V_LDO3V3
40
20mV/DIV
AC COUPLED
20
V_BAT = 3.8V
20μs/DIV
0
0
1
2
3
4
5
CHRG PIN VOLTAGE (V)
3567 G19
30
20
3567 G20
10
0
–40 –15 10
35
60
85
TEMPERATURE (°C)
3567 G21
R_DS(ON) for Buck-Boost Regulator
Power Switches vs Temperature
0.30
0.40
PMOS V_IN1 = 3V
0.25
PMOS V_IN1 = 3.6V
PMOS V_IN1 = 4.5V
0.35
0.20
0.30
NMOS V_IN1 = 3V
0.15
NMOS V_IN1 = 3.6V
0.25
NMOS V_IN1 = 4.5V
0.10
0.20
Buck-Boost Regulator Current
Limit vs Temperature
2600
V_IN1 = 3V
2550
2500
V_IN1 = 3.6V
V_IN1 = 4.5V
2450
2400
Buck-Boost Regulator Burst Mode
Operation Quiescent Current
14.0
V_OUT1 = 3.3V
13.5
V_IN1 = 4.5V
13.0
V_IN1 = 3V
12.5
V_IN1 = 3.6V
12.0
0.05
0.15
2350
11.5
0
0.10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3567 G22
8
2300
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3567 G23
11.0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3567 G24
3567f