ltc3831egn-trpbf Linear Technology Corporation, ltc3831egn-trpbf Datasheet - Page 4

• Manufacturer Part Number: ltc3831egn-trpbf
• Description: High Power Synchronous Switching Regulator Controller For Ddr Memory Termination
• Manufacturer: Linear Technology Corporation

LTC3831
TYPICAL PERFORMANCE CHARACTERISTICS
4
1.270
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.270
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
210
200
180
250
240
230
220
190
160
170
–50
–50
–6
Load Regulation
Output Temperature Drift
Oscillator Frequency
vs Temperature
FREQSET FLOATING
T
REFER TO FIGURE 1
NEGATIVE OUTPUT CURRENT
INDICATES CURRENT SINKING
REFER TO FIGURE 1
OUTPUT = NO LOAD
A
= 25°C
–25
–25
–4
OUTPUT CURRENT (A)
0
TEMPERATURE (°C)
TEMPERATURE (°C)
–2
0
25
25
0
50
50
2
75
75
100
4
3831 G08
3831 G02
3831 G04
125
100
6
20
15
10
5
0
–5
–10
–15
–20
1.260
1.258
1.256
1.254
1.252
1.250
1.248
1.246
1.244
1.242
1.240
200
180
160
140
120
100
600
500
400
300
200
100
80
60
40
0
–50
–40
3
Line Regulation
Error Amplifi er Sink/Source
Current vs Temperature
Oscillator Frequency
vs FREQSET Input Current
T
A
= 25°C
–25
–30
FREQSET INPUT CURRENT (μA)
4
SUPPLY VOLTAGE (V)
0
TEMPERATURE (°C)
–20
5
25
–10
50
6
0
75
T
7
A
100
10
= 25°C
3831 G03
3831 G06
3831 G09
125
8
20
10
8
6
4
2
0
–2
–4
–6
–8
–10
800
750
700
650
600
550
500
1.1
1.5
1.4
1.3
1.2
1.0
0.9
0.8
0.7
0.6
0.5
55
45
40
60
50
–50
100
–50
Error Amplifi er Transconductance
vs Temperature
Error Amplifi er Open-Loop Gain
vs Temperature
Oscillator (V
vs External Sync Frequency
T
A
–25
= 25°C
–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 G05
3831 G10
3831 G07
3831fa
500
125
125