Datasheet

4
LTC3830/LTC3830-1
3830fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Load Regulation
OUTPUT CURRENT (A)
–15
V
OUT
(V)
3.33
0
3830 G02
3.30
3.28
–10 –5 5
3.27
3.26
3.34
3.32
3.31
3.29
10 15
T
A
= 25°C
REFER TO FIGURE 12
Line Regulation
SUPPLY VOLTAGE (V)
3
V
FB
(V)
∆V
FB
(mV)
1.267
1.271
1.275
7
3830 G03
1.263
1.259
1.265
1.269
1.273
1.261
1.257
1.255
2
6
10
–2
–6
0
4
8
–4
–8
–10
4
5
6
8
T
A
= 25°C
Output Voltage Temperature Drift
TEMPERATURE (°C)
–50
V
OUT
(V)
∆V
OUT
(mV)
3.33
25
3830 G04
3.30
3.28
–25 0 50
3.27
3.26
3.34
3.32
3.31
3.29
30
0
–20
–30
–40
40
20
10
–10
75 100 125
REFER TO FIGURE 12
OUTPUT = NO LOAD
Error Amplifier Transconductance
vs Temperature
TEMPERATURE (˚C)
–50
ERROR AMPLIFIER TRANSCONDUCTANCE (µmho)
700
750
800
25 75
3830 G05
650
600
–25 0
50 100 125
550
500
TEMPERATURE (°C)
–50
ERROR AMPLIFIER SINK/SOURCE CURRENT (µA)
180
25
3830 G06
120
80
–25 0 50
60
40
200
160
140
100
75 100 125
TEMPERATURE (°C)
–50
40
ERROR AMPLIFIER OPEN-LOOP GAIN (dB)
45
50
55
60
–25 0 25 50
2830 G07
75 100 125
Error Amplifier Sink/Source
Current vs Temperature
Error Amplifier Open-Loop Gain
vs Temperature
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs FREQSET Input Current
Oscillator (V
SAWH
– V
SAWL
)
vs External Sync Frequency
TEMPERATURE (°C)
–50
160
OSCILLATOR FREQUENCY (kHz)
170
190
200
210
50
250
3831 G08
180
0
–25
75 100
25 125
220
230
240
FREQSET FLOATING
FREQSET INPUT CURRENT (µA)
–40
0
OSCILLATOR FREQUENCY (kHz)
100
200
300
400
600
–30
–20 –10 0
3830 G09
10 20
500
T
A
= 25°C
EXTERNAL SYNC FREQUENCY (kHz)
100
0.5
V
SAWH
– V
SAWL
(V)
0.6
0.8
0.9
1.0
1.5
1.2
200
300
3830 G10
0.7
1.3
1.4
1.1
400
500
T
A
= 25°C