Datasheet

4
LTC3832/LTC3832-1
sn3832 3832fs
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Load Regulation Line Regulation
Output Voltage Temperature Drift
Error Amplifier Transconductance
vs Temperature
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
ERROR AMPLIFIER SINK/SOURCE CURRENT (µA)
180
25
3830 G05
120
80
–25 0 50
60
40
200
160
140
100
75 100 125
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
3832 G09
0.7
1.3
1.4
1.1
400
500
T
A
= 25°C
OUTPUT CURRENT (A)
–15
V
OUT
(V)
2.49
2.50
2.51
0
10
3832 G01
2.48
2.47
2.46
–10 –5 5
2.52
2.53
2.54
15
T
A
= 25°C
REFER TO FIGURE 12
SUPPLY VOLTAGE (V)
3
V
FB
(V)
∆V
FB
(mV)
0.601
0.603
0.605
7
3832 G02
0.599
0.597
0.600
0.602
0.604
0.598
0.596
0.595
1
3
5
–1
–3
0
2
4
–2
–4
–5
4
5
6
8
T
A
= 25°C
TEMPERATURE (°C)
–50
ERROR AMPLIFIER TRANSCONDUCTANCE (µmho)
2300
25
3832 G03
2000
1800
–25 0 50
1700
1600
2400
2200
2100
1900
75 100 125
TEMPERATURE (°C)
–50
2.45
V
OUT
(V)
∆V
OUT
(mV)
2.46
2.48
2.49
2.50
2.55
2.52
0
50
75
3832 G04
2.47
2.53
2.54
2.51
–50
–40
–20
–10
0
50
20
–30
30
40
10
–25
25
100
125
REFER TO FIGURE 12
OUTPUT = NO LOAD
TEMPERATURE (°C)
–50
50
ERROR AMPLIFIER OPEN-LOOP GIAN (dB)
55
60
65
70
–25 0 25 50
3832 G06
75 100 125
TEMPERATURE (°C)
–50
OSCILLATOR FREQUENCY (kHz)
280
340
350
360
0
50
75
3832 G07
260
320
300
270
330
240
250
310
290
–25
25
100
125
FREQSET FLOATING
FREQSET INPUT CURRENT (µA)
–30
700
600
500
400
300
200
100
0
020
3832 G08
–20 –10
10 30
OSCILLATOR FREQUENCY (kHz)
T
A
= 25°C