LTC1698EGN Linear Technology, LTC1698EGN Datasheet - Page 6

• Manufacturer Part Number: LTC1698EGN
• Description: IC PREC RECT CONTROLLER 16-SSOP
• Manufacturer: Linear Technology

Specifications of LTC1698EGN

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 400kHz
• Voltage - Supply: 6 V ~ 12.6 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SSOP
• Frequency-max: 400kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Duty Cycle: -

LTC1698
TYPICAL PERFOR A CE CHARACTERISTICS
6
–10
–20
–30
–40
–50
90
80
70
60
50
40
30
20
10
50
45
40
35
30
25
20
15
10
0
5
0
0
50
0
5
I
Opto Driver Short-Circuit Current
vs V
Driver Rise, Fall and Propagation
Delay vs Driver Load
VDD
T
V
T
V
T
V
A
A
A
OPTODRV
DD
DD
100
= 25 C
= 25 C
= 25 C
6
DD
= 8V
= 8V
vs SYNC Frequency
CG, FG t
2000
C
150
FG
7
= 1.233V
= C
CG, FG t
DRIVER LOAD (pF)
200
PHL
C
8
CG
FG
4000
f
SYNC
= C
= 2200pF
250
V
9
C
DD
PLH
C
FG
CG
t
FG
f
(kHz)
300
(V)
10
= C
= 3300pF
6000
= C
CG
350 400
t
CG
11
r
= 4700pF
= 1000pF
W
12
8000
450
1698 G25
13
1698 G17
1698 G19
U
10000
500
14
90
80
70
60
50
40
30
20
10
0
–50 –25
2.25
1.75
1.25
1.00
2.00
1.50
SYNC Input to Driver Output Delay
vs Temperature
20
18
16
14
12
10
V
C
f
SYNC
8
6
4
2
0
DD
CG
–50
5
SYNC Positive Threshold
vs Temperature
I
= C
VDD
= 8V
V
T
f
CG, FG t
SYNC
DD
A
= 100kHz
FG
–25
= 25 C
6
= 8V
0
C
vs V
= 1000pF
C
= 100kHz
FG
TEMPERATURE ( C)
FG
PLH
7
= C
= C
0
25
DD
TEMPERATURE ( C)
CG
CG
8
25
= 1000pF
50
= 3300pF
CG, FG t
V
9
DD
50
C
75
FG
C
(V)
10
FG
= C
PHL
75
= C
100 125 150
CG
11
CG
= 4700pF
100 125
= 2200pF
12
1698 G26
13
1698 G20
1698 G18
150
14
30
25
20
15
10
5
0
50
Driver Disable Time-Out vs SYNC
Frequency
T
V
A
2.20
1.96
1.72
1.48
1.00
DD
100
1.24
= 25 C
= 8V
5
4
3
2
1
0
–50
150
5
Undervoltage Lockout Threshold
vs Temperature
SYNC Positive Threshold
vs V
T
A
= 25 C
6
–25
200
DD
f
SYNC
7
250 300
0
TEMPERATURE ( C)
8
(kHz)
25
t
t
DISS
V
DISS
9
350 400 450
DD
50
(V)
10
f
SYNC
75
11
1698 G27
100 125
12
500
2.2
2.0
1.8
1.6
1.4
1.2
1.0
13
1698 G21
1698 G24
1698f
150
14