Datasheet

LTC3114-1
7
Rev. C
For more information www.analog.com
Inductor Overload Current Limit
Threshold vs Temperature
RUN Pin Threshold
vs Temperature
RUN Pin Current vs RUN Pin
Voltage FB Voltage vs Temperature
Power Switch Resistance
vs Temperature
Inductor Current Limit Threshold
vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
(T
A
= 25°C unless otherwise specified)
TEMPERATURE (°C)
–60
1.216
RUN PIN THRESHOLD (V)
1.220
1.218
1.222
30 60 90 120
1.230
31141 G19
–30 0 150
1.226
1.224
1.228
V
IN
= 24V
RUN PIN VOLTAGE (V)
0
RUN PIN CURRENT (µA)
4
6
40
31141 G20
2
0
10
20
30
5
15
25
35
8
3
5
1
7
V
IN
= 12V
TEMPERATURE (°C)
–60
–0.40
NORMAIZED FB VOLTAGE (% CHANGE FROM 25°C)
–0.24
–0.32
–0.16
30 60 90 120
0.24
31141 G21
–30 0 150
0
–0.08
0.08
0.16
V
IN
= 24V
TEMPERATURE (°C)
–60
0.19
POWER SWITCH RESISTANCE A/D (Ω)
0.23
0.21
0.25
30 60 90 120
0.41
31141 G22
–30 0 150
0.31
0.27
0.35
0.39
0.29
0.33
0.37
V
IN
= 24V
TEMPERATURE (°C)
–60
1.650
INDUCTOR CURRENT LIMIT THRESHOLD (A)
1.700
1.675
1.725
30 60 90 120
1.800
31141 G23
–30 0 150
1.750
1.775
V
IN
= 24V
TEMPERATURE (°C)
–60
2.40
INDUCTOR OVERLOAD CURRENT
LIMIT THRESHOLD (A)
2.50
2.45
2.55
30 60 90 120
2.70
31141 G24
–30 0 150
2.60
2.65
V
IN
= 24V
Inductor Zero Current Threshold
vs Temperature
SW1/SW2 Minimum Low Times
vs Temperature
SW1/SW2 Minimum Low Times
vs LDO
TEMPERATURE (°C)
–60
100
INDUCTOR ZERO CURRENT THRESHOLD (mA)
106
103
109
30 60 90 120
115
31141 G25
–30 0 150
112
V
IN
= 24V
TEMPERATURE (°C)
–60
90
MINIMUM LOW TIME (ns)
102
96
108
30 60 90 120
120
31141 G26
–30 0 150
114
V
IN
= 24V
LDO VOLTAGE (V)
2.7
MINIMUM LOW TIME (ns)
130
140
150
5.5
31141 G27
120
110
90
3.4
4.1
4.8
100
170
160
IN APPLICATION
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.