LTC3576 Datasheet, PDF (8/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

LTC3576/LTC3576-1
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise specified.
V_BUS Quiescent Current vs
V_BUS Voltage (Suspend)
60
50
40
30
20
10
0
0
1
2
3
4
5
BUS VOLTAGE (V)
3576 G10
Battery Charge Current vs V_OUT
Voltage
600
R_CLPROG = 3.01k
R_PROG = 2k
500 5x MODE
400
300
200
100
0
3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3.80
V_OUT (V)
3576 G13
V_BUS Quiescent Current vs
Temperature
25
V_BUS = 5V
20
5x MODE
15
10
1x MODE
5
0
–40 –15 10
35
60
85
TEMPERATURE (°C)
3576 G16
8
V_OUT Voltage vs Load Current in
Suspend
5.0
HIGH POWER SUSPEND
4.5
V_BUS Current vs Load Current in
Suspend
2.5
V_BUS = 5V
BAT = 3.3V
2.0 ^{RCLPROG = 3.01k}
4.0
3.5
LOW POWER SUSPEND
3.0 _{VBUS = 5V}
BAT = 3.3V
R_CLPROG = 3.01k
2.5
0
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (mA)
3576 G11
V_OUT Voltage vs Battery Voltage
(Charger Overprogrammed)
4.7
V_BUS = 5V
4.5 _{IVOUT = 0V}
4.3
R_CLPROG = 3.01k
R_PROG = 1k
4.1
3.9
5x MODE
3.7
3.5
1x MODE
3.3
3.1
2.9
2.7
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
3576 G14
V_BUS Quiescent Current in
Suspend vs Temperature
60
V_BUS = 5V
50
40
30
20
10
0
–40
–15 10
35
60
85
TEMPERATURE (°C)
3576 G17
1.5
HIGH POWER
SUSPEND
1.0
0.5
LOW POWER SUSPEND
0
0
0.5
1.0
1.5
2.0
2.5
LOAD CURRENT (mA)
3576 G12
Normalized Battery Charger Float
Voltage vs Temperature
1.001
1.000
0.999
0.998
0.997
0.996
–40
–15 10
35
60
85
TEMPERATURE (°C)
3576 G15
Battery Drain Current vs
Temperature
35
30
25
20
15
10
5
0
–40
BAT = 3.8V
V_BUS = 0V
SWITCHING
REGULATORS OFF
–15 10
35
60
85
TEMPERATURE (°C)
3576 G18
3576f