LTC1704 Linear Technology, LTC1704 Datasheet - Page 5

• Manufacturer Part Number: LTC1704
• Description: 550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
580
560
540
500
640
620
600
520
480
460
100
2.0
1.0
0.5
1.5
90
80
70
60
50
40
30
20
10
0
–50
0
0
V
0
f
Drivers Rise and Fall Time
vs Load
V
OSC
V
V
T
R
QT = QB = 2xFDS6670A
OUTSW
T
PV
CC
IN
OUTSW
A
IMAX
A
= 25 C
–25
CC
= 25 C
= 5V
= 5V
vs Temperature
2000
= BOOST = 5V
= 13.7k
4
= 1.8V
vs Load Current
0
TEMPERATURE ( C)
LOAD CURRENT (A)
TG, BG LOAD (pF)
4000
8
25
50
6000
12
75
W
8000
16
100
1704 G12
1704 G09
1704 G15
U
10000
125
20
0.820
0.805
0.800
0.795
0.790
0.785
0.780
0.815
0.810
–10.5
–11.5
–10.0
–11.0
– 50
–8.5
–9.0
–9.5
650
610
570
530
490
450
V
V
REGFB
–50
REGDR
3
– 25
I
f
IMAX
V
OSC
T
CC
A
–25
= 25 C
= 3.3V
= 5V
vs Temperature
3.5
vs V
vs Temperature
0
TEMPERATURE ( C)
CC
0
TEMPERATURE ( C)
25
4
25
V
CC
50
4.5
(V)
50
75
5
75
LTXXX • TPCXX
100
5.5
100
125
1704 G10
1704 G13
125
6
–0.4
–0.8
–1.2
–1.6
1.6
1.2
0.8
0.4
LTC1704/LTC1704B
0
3
V
T
V
REGFB
–11.0
–11.5
–10.0
–10.5
A
REGDR
–8.5
–9.0
–9.5
= 25 C
93
92
89
87
91
90
88
3.5
–50
3
I
Maximum TG Duty Cycle
vs Temperature
IMAX
= 0.8V
T
V
TG, BG FLOAT
Line Regulation
A
CC
= 25 C
–25
= 5V
3.5
4
vs V
V
CC
0
CC
4.5
TEMPERATURE ( C)
4
(V)
25
V
CC
4.5
5
(V)
50
5.5
5
75
1704 G17
6
5.5
100
0
0.20
0.15
0.10
0.05
–0.05
–0.10
–0.15
–0.20
1704 G10
1704bfa
1704 G11
5
125
6