LTC3115-1
TYPICAL PERFORMANCE CHARACTERISTICS
(T
A
= 25°C unless otherwise specified)
V
CC
Regulator Dropout Voltage
vs Temperature
0.25
0.20
DROPOUT VOLTAGE (V)
V
IN
= 4V
I
VCC
= 20mA
CHANGE FROM 25°C (%)
1.0
0.8
CHANGE FROM 25°C (%)
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
0
–50
0
100
TEMPERATURE (°C)
50
150
31151 G23
RUN Pin Threshold
vs Temperature
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
0
50
100
TEMPERATURE (°C)
150
31151 G24
RUN Pin Hysteresis Current
vs Temperature
0.15
0.10
0.05
–1.0
–50
–2.0
–50
0
100
TEMPERATURE (°C)
50
150
31151 G25
Oscillator Frequency vs R
T
10000
2.0
1.5
SWITCHING FREQUENCY (kHz)
CHANGE FROM 25°C (%)
1.0
0.5
0
–0.5
–1.0
–1.5
100
10
100
R
T
(k )
1000
31151 G26
Oscillator Frequency
vs Temperature
f
SW
= 1MHz
CHANGE FROM V
IN
= 24V (%)
2.0
1.5
1.0
0.5
0
Oscillator Frequency vs V
IN
f
SW
= 1MHz
1000
–0.5
–1.0
–1.5
–2.0
–50
0
100
TEMPERATURE (°C)
50
150
31151 G27
–2.0
2
10
V
IN
(V)
40
31151 G28
RUN Pin Current
vs RUN Pin Voltage
7
6
CURRENT INTO RUN PIN (µA)
5
4
3
2
1
0
–1
0
20
10
30
RUN PIN VOLTAGE (V)
40
31151 G29
Shutdown Current on V
IN
/PV
IN
vs Input Voltage
3.0
COMBINED V
IN
/PV
IN
CURRENT (µA)
2.5
2.0
1.5
1.0
0.5
0
POWER SWITCH (A-D) RESISTANCE (m )
V
RUN
= 0V
300
250
200
150
100
50
Power Switch Resistance
vs Temperature
V
IN
= 40V
0
10
20
30
INPUT VOLTAGE (V)
40
31151 G30
0
–50
0
50
100
TEMPERATURE (°C)
150
31151 G31
31151f
7
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
