LTC3773EG-PBF LINER [Linear Technology], LTC3773EG-PBF Datasheet - Page 6
LTC3773EG-PBF
Manufacturer Part Number
LTC3773EG-PBF
Description
Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking
Manufacturer
LINER [Linear Technology]
Datasheet
1.LTC3773EG-PBF.pdf
(32 pages)
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LTC3773
TYPICAL PERFORMANCE CHARACTERISTICS
6
120
100
20
80
60
40
0
150
I
Forced Continuous Mode
0A to 10A Load Step
V
VDR
V
FORCED CONTINUOUS MODE
V
V
V
IN
IN
OUT1
OUT2
OUT3
= 12V, f
= 10V, V
250
and I
= 2.5V WITH 5A LOAD
= 1.8V WITH 5A LOAD
= 1.2V WITH 5A LOAD
SWITCHING FREQUENCY (kHz)
SW
VCC
CC
350
= 220kHz
= V
vs Switching Frequency
50μs/DIV
DR
450
= 5V,
550
650
I
I
3773 G07
VDR
VCC
3773 G09
750
2.6
2.1
2.5
2.4
2.3
2.2
2.0
1.8V V
50mV/DIV
AC COUPLED
I
5A/DIV
I
10A/DIV
L
LOAD
Burst Mode Operation 0A to 5A
Load Step at 5kHz Interval
V
IN
= 12V, f
OUT
SW
= 220kHz
50μs/DIV
100
3773 G11
10
0.001
1
I
V
V
Discontinuous Mode 0A to 5A
Load Step at 5kHz Interval
V
DISCONTINUOUS
MODE
VCC
IN
OUT2
IN
1.8V V
50mV/DIV
AC COUPLED
I
5A/DIV
V
10V/DIV
I
5A/DIV
Burst Mode
OPERATION
L
LOAD
= 12V, V
= 12V, f
SW
and I
= 1.8V (NO LOAD), V
0.01
CHANNEL 1 LOAD CURRENT (A)
OUT
SW
CC
VDR
= 220kHz
= V
0.1
vs Load Current
DR
50μs/DIV
= 5V, V
FORCED CONTINUOUS
PLLFLTR = 0V
PLLFLTR = 5V
PLLFLTR = FLOATS
OUT3
1
OUT1
= 1.2V (NO LOAD)
= 2.5V
10
3773 G10
3773 G08
100
1.8V V
50mV/DIV
AC COUPLED
I
5A/DIV
V
10V/DIV
I
5A/DIV
L
LOAD
SW
OUT
3773fb
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