LTC3115-2_15 Datasheet, PDF (7/42 Pages) Linear Technology – 40V, 2A Synchronous Buck-Boost DC/DC Converter

LTC3115-2
Typical Performance Characteristics (T_A = 25°C unless otherwise specified)
V_CC Regulator Dropout Voltage
vs Temperature
0.25
V_IN = 4V
I_VCC = 20mA
0.20
0.15
0.10
0.05
0
–50
0
50
100
TEMPERATURE (°C)
150
31152 G23
Oscillator Frequency vs R_T
10000
1000
100
10
100
R_T (kΩ)
1000
31152 G26
RUN Pin Current
vs RUN Pin Voltage
7
V_IN = 40V
6
5
4
3
2
1
0
–1
0
10
20
30
40
RUN PIN VOLTAGE (V)
31152 G29
RUN Pin Threshold
vs Temperature
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–50
0
50
100
TEMPERATURE (°C)
150
31152 G24
Oscillator Frequency
vs Temperature
2.0
f_SW = 1MHz
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–50
0
50
100
TEMPERATURE (°C)
150
31152 G27
Shutdown Current on V_IN/PV_IN
vs Input Voltage
3.0
V_RUN = 0V
2.5
2.0
1.5
1.0
0.5
0
0
10
20
30
40
INPUT VOLTAGE (V)
31152 G30
For more information www.linear.com/LTC3115-2
RUN Pin Hysteresis Current
vs Temperature
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–50
0
50
100
TEMPERATURE (°C)
150
31152 G25
Oscillator Frequency vs V_IN
2.0
f_SW = 1MHz
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
2
10
V_IN (V)
40
31152 G28
Power Switch Resistance
vs Temperature
300
250
200
150
100
50
0
–50
0
50
100
TEMPERATURE (°C)
150
31152 G31
31152fa
7