LTC3101
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise specified)
Current Limit Thresholds vs
Temperature
Buck-Boost P-Channel Switch
RDS(ON)
Buck Switch RDS(ON)
10
8
240
220
200
800
700
600
500
400
300
200
100
0
PMOS
BUCK P-CHANNEL
CURRENT LIMIT
6
SWITCH D
4
SWITCH A
2
180
160
140
120
100
BUCK-BOOST
INDUCTOR
CURRENT LIMIT
NMOS
0
–2
–4
–6
–8
–10
SWITCH A´
50
TEMPERATURE (°C)
0
50
TEMPERATURE (°C)
150
–50
0
50
100
–50
0
100
150
–50
100
TEMPERATURE (°C)
3101 G10
3101 G11
3101 G12
Buck-Boost N-Channel Switch
RDS(ON)
Buck-Boost P-Channel Switch
RDS(0N)
Buck Switch RDS(0N)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.30
0.28
0.26
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
250
200
150
100
50
PMOS SWITCHES
SWITCH B
SWITCH C
SWITCH A
SWITCH D
NMOS SWITCHES
SWITCH A´
0
0
1
2
3
4
5
6
0
50
100
1
5
6
–50
150
2
3
4
SUPPLY VOLTAGE, V
OR V
(V)
SUPPLY VOLTAGE, V , V
OR V
(V)
OUT3
TEMPERATURE (°C)
BAT
USB
BAT USB
3101 G15
3101 G13
3101 G14
Buck-Boost N-Channel Switch
RDS(0N)
Feedback Voltages
LDO Output Voltage
0.5
0.4
1.0
0.8
0.20
0.19
0.18
0.17
0.16
0.15
0.14
0.13
0.12
0.11
0.10
0.3
0.6
0.2
0.4
0.1
0.2
FB3
0
0
SWITCH B
SWITCH C
FB1, FB2
–0.1
–0.2
–0.3
–0.4
–0.5
–0.2
–0.4
–0.6
–0.8
–1.0
2
3
4
5
6
–50
0
50
100
150
50
TEMPERATURE (°C)
150
1
–50
0
100
TEMPERATURE (°C)
SUPPLY VOLTAGE, V
OR V
(V)
USB
BAT
3101 G16
3101 G17
3101 G18
3101f
6
Linear [ Linear ]
