Linear Technology LTC3810-5, Datasheet

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LTC3810-5
6
38105fd
Frequency vs Load Current
Current Sense Threshold
vs I
TH
Voltage On-Time vs I
ON
Current
On-Time vs V
ON
Voltage On-Time vs Temperature Current Limit Foldback
Maximum Current Sense
Threshold vs V
RNG
Voltage
Maximum Current Sense
Threshold vs Temperature
Reference Voltage vs
Temperature
Typical perForMance characTerisTics
LOAD CURRENT (A)
0
250
300
350
4
38105 G10
200
150
1 2 3 5
100
50
0
FREQUENCY (kHz)
FORCED
CONTINUOUS
PULSE SKIP
I
TH
VOLTAGE (V)
0
CURRENT SENSE THRESHOLD (mV)
–100
0
100
1.5 2.5
38105 G11
–200
–300
–400
0.5 1.0 2.0
200
300
400
3.0
V
RNG
= 2V
1.4V
1V
0.7V
0.5V
I
ON
CURRENT (µA)
10
10
ON-TIME (ns)
100
1000
10000
100 1000 10000
38105 G12
V
ON
= INTV
CC
V
ON
VOLTAGE (V)
0
400
500
700
1.5 2.5
38105 G13
300
200
0.5 1
2 3
100
0
600
ON-TIME (ns)
I
ON
= 300µA
TEMPERATURE (°C)
–50
ON-TIME (ns)
640
660
680
25 75
38105 G14
620
600
–25 0 50 100 150 125
580
560
I
ON
= 300µA
V
FB
(V)
0
MAXIMUM CURRENT SENSE THRESHOLD (mV)
100
150
0.8
38105 G15
50
0
0.2 0.4 0.6
250
200
V
RNG
= INTV
CC
V
RNG
VOLTAGE (V)
0.5
MAXIMUM CURRENT SENSE THRESHOLD (mV)
200
38105 G16
100
0
1 1.5
300
400
2 –50 25 75 –25 0 50 100 150 125
TEMPERATURE ( ° C)
180
MAXIMUM CURRENT SENSE THRESHOLD (mV)
200
230
38105 G17
190
220
210
V
RNG
= INTV
CC
–50 25 75 –25 0 50 100 150 125
TEMPERATURE (
°
C)
REFERENCE VOLTAGE (V)
0.801
0.802
0.803
38105 G18
0.800
0.799
0.798
0.797