LTC3831-1 Linear Technology, LTC3831-1 Datasheet - Page 4

• Manufacturer Part Number: LTC3831-1
• Description: High Power Synchronous Switching Regulator Controller
• Manufacturer: Linear Technology

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LTC3831-1
TYPICAL PERFOR A CE CHARACTERISTICS
4
0.762
0.760
0.758
0.756
0.754
0.752
0.750
0.748
0.746
0.744
0.742
0.740
0.738
0.762
0.760
0.758
0.756
0.754
0.752
0.750
0.748
0.746
0.744
0.742
0.740
0.738
360
350
340
330
320
310
300
290
280
270
260
250
240
–50
–50
–10
Output Voltage Temperature Drift
Load Regulation
Oscillator Frequency
vs Temperature
REFER TO FRONT PAGE APPLICATION
OUTPUT = NO LOAD
FREQSET FLOATING
T
REFER TO FRONT PAGE APPLICATION
NEGATIVE OUTPUT CURRENT
INDICATES CURRENT SINKING
A
–8
–25
–25
= 25 C
–6
0
0
OUTPUT CURRENT (A)
TEMPERATURE ( C)
–4 –2
TEMPERATURE ( C)
25
25
0
50
50
2
75
75
4
W
6
100
100
3831 G08
3831 G05
3831 G02
8 10
U
125
125
12
10
8
6
4
2
0
–2
–4
–6
–8
–10
–12
0.760
0.758
0.756
0.754
0.752
0.750
0.748
0.746
0.744
0.742
0.740
700
600
500
400
300
200
100
Line Regulation
3
200
180
160
140
120
100
T
0
80
60
40
A
30
Oscillator Frequency
vs FREQSET Input Current
–50
= 25 C
Error Amplifier Sink/Source
Current vs Temperature
4
–25
20
V
FREQSET INPUT CURRENT ( A)
CC
SUPPLY VOLTAGE (V)
10
5
0
TEMPERATURE ( C)
25
0
6
50
10
7
75
T
A
3831 G03
20
= 25 C
100
3831 G09
8
3831 G06
10
8
6
4
2
0
–2
–4
–6
–8
–10
30
125
2400
2300
2200
2100
2000
1900
1800
1700
1600
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.5
0.6
65
55
50
70
60
100
–50
–50
Error Amplifier Open-Loop Gain
vs Temperature
Oscillator (V
vs External Sync Frequency
Error Amplifier Transconductance
vs Temperature
T
A
= 25 C
–25
–25
EXTERNAL SYNC FREQUENCY (kHz)
200
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
SAWH
25
25
300
– V
50
50
SAWL
75
75
400
)
100
100
3831 G10
3831 G07
3831 G04
38311f
500
125
125