LTC3586-2 Datasheet, PDF (9/36 Pages) –

LTC3586-2/LTC3586-3
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C unless otherwise noted)
V_BUS Quiescent Current
vs Temperature
15
V_BUS = 5V
I_VOUT = 0µA
12
5x MODE
9
1x MODE
6
V_BUS Quiescent Current in
Suspend vs Temperature
70
I_VOUT = 0µA
60
50
40
CHRG Pin Current vs Voltage
(Pull-Down State)
100 _{VBUS = 5V}
BAT = 3.8V
80
60
40
20
3
–40
–15
10
35
60
85
TEMPERATURE (°C)
358623 G17
30
–40
–15
10
35
60
85
TEMPERATURE (°C)
358623 G18
0
0
1
2
3
4
5
CHRG PIN VOLTAGE (V)
358623 G19
3.3V LDO Step Response
(5mA to 15mA)
I_LDO3V3
5mA/DIV
0mA
V_LDO3V3
20mV/DIV
AC-
COUPLED
BAT = 3.8V
20µs/DIV
358623 G20
Battery Drain Current
vs Temperature
50 _{BAT = 3.8V}
V_BUS = 0V
ALL REGULATORS OFF
40
30
Switching Regulators 1, 2 Pulse-
Skipping Mode Quiescent Currents
325
1.95
V_IN1,2 = 3.8V
300
1.90
V_{OUT1, 2} = 2.5V
(CONSTANT FREQUENCY)
275
1.85
20
250
1.80
10
0
–40
–15
10
35
60
85
TEMPERATURE (°C)
358623 G21
225
200
– 40
1.75
V_OUT1,2 = 1.25V
(PULSE SKIPPING)
1.70
–15
10
35
60
85
TEMPERATURE (°C)
358623 G22
Switching Regulators 1, 2
Pulse-Skipping Mode Efficiency
100
90
V_{OUT1, 2} = 2.5V
80
70
V_{OUT1, 2} = 1.2V
60
V_{OUT1, 2} = 1.8V
50
40
30
20
10
0
1
V_{IN1, 2} = 3.8V
10
100
OUTPUT CURRENT (mA)
1000
358623 G23
Switching Regulators 1, 2
Burst Mode Efficiency
100
V_{OUT1, 2} = 2.5V
90
80
V_{OUT1, 2} = 1.2V
70
V_{OUT1, 2} = 1.8V
60
50
40
30
20
10
0
0.1
V_{IN1, 2} = 3.8V
1
10
100
OUTPUT CURRENT (mA)
1000
358623 G24
358623f
9