LTC3773EG-PBF LINER [Linear Technology], LTC3773EG-PBF Datasheet - Page 5

• Manufacturer Part Number: LTC3773EG-PBF
• Description: Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
–0.5
–1.0
–1.5
–2.0
–2.5
100
100
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
20
10
95
85
80
75
90
0
0
0.001
0
0
Effi ciency vs Load Current,
Shutdown CH2 and CH3
V
f
Effi ciency vs V
Shutdown CH2 and CH3
Line Regulation
PLLFLTR = 5V
PLLFLTR FLOATS
PLLFLTR = 0V
SW
V
SHUTDOWN CH2 AND CH3
V
IN
f
f
f
CC
CC
SW
SW
SW
= 12V, V
= 220kHz
= 5V, V
= 5V, V
= 560kHz
= 400kHz
= 220kHz
0.01
CHANNEL 1 LOAD CURRENT (A)
5
5
CC
OUT
OUT1
= 5V, V
= 2.5V, I
Burst Mode
OPERATION
0.1
10
10
= 2.5V, I
IN
DISCONTINUOUS
MODE
V
IN
OUT1
V
(V)
OUT
IN
OUT1
15
15
(V)
= 2.5V
1
= 5A
CONTINUOUS
MODE
= 5A
EFFICIENCY
POWER LOSS
EFFICIENCY
POWER LOSS
20
10
20
3773 G05
3773 G03
3773 G01
100
25
25
4.0
3.2
1.6
0.8
0.0
1.0
0.8
0
–0.2
–0.4
–0.6
–0.8
–1.0
10000
1000
100
10
1
0.1
2.4
0.6
0.4
0.2
100
–15
–20
–25
–10
90
80
70
60
50
40
30
20
10
25
10
20
15
–5
0
0.001
5
0
5
0
0
Current Limit vs V
Effi ciency vs Load Current,
Power-Up CH2 and CH3
V
V
f
0
Load Regulation
SW
IN
OUT2
V
V
CC
IN
= 12V, V
= 220kHz
= 12V, V
= 5V, V
= 1.8V (NO LOAD), V
0.01
CHANNEL 1 LOAD CURRENT (A)
CONTINUOUS MODE
DISCONTINUOUS MODE
Burst Mode OPERATION
5
5
CC
OUT
LOAD CURRENT (A)
CC
= 5V, V
0.1
= 5V, V
= 2.5V, f
10
Burst Mode
OPERATION
V
IN
OUT1
10
OUT
(V)
IN
SW
DISCONTINUOUS
MODE
OUT3
15
1
= 2.5V
= 2.5V
= 220kHz
R
R
SENSE
SENSE
CONTINUOUS
MODE
EFFICIENCY
POWER LOSS
= 1.2V (NO LOAD)
15
10
20
= 3mΩ
= 5mΩ
3773 G06
3773 G04
LTC3773
3773 G02
100
25
20
10000
1000
100
10
1
0.1
0.2
0.0
–0.2
–0.8
–0.4
–0.6
–1.0
3773fb
5