Datasheet

LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
9
69921234fc
Typical perForMance characTerisTics
N
DIV
> 1 Duty Cycle vs V
MOD
/ V
SET
N
DIV
= 1 Duty Cycle Error vs Ideal N
DIV
> 1 Duty Cycle Error vs Ideal
N
DIV
> 1 Duty Cycle Error vs Ideal
V
MOD
/V
SET
(V/V)
0 0.2
0
40
80
70
60
50
90
100
0.80.60.4
1
30
20
10
6992 G31
DUTY CYCLE (%)
DIVCODE = 11
3 PARTS
LTC6992-1/
LTC6992-4
LTC6992-2/
LTC6992-4
LTC6992-1/LTC6992-3
LTC6992-2/
LTC6992-3
IDEAL DUTY CYCLE (%)
–5
0
4
3
2
1
5
50250
100
–1
–2
–3
–4
75
6992 G32
ERROR (%)
DIVCODE = 0
3 PARTS
PART A
PART B
PART C
IDEAL DUTY CYCLE (%)
–5
0
4
3
2
1
5
50250
100
–1
–2
–3
–4
75
6992 G33
ERROR (%)
DIVCODE = 4
3 PARTS
PART A
PART B
PART C
IDEAL DUTY CYCLE (%)
–5
0
4
3
2
1
5
50250
100
–1
–2
–3
–4
75
6992 G34
ERROR (%)
DIVCODE = 11
3 PARTS
PART A
PART B
PART C
V
+
= 3.3V, R
SET
= 200k, and T
A
= 25°C, unless
otherwise noted.
Linearity Near 100% Duty Cycle
V
MOD
/V
SET
(V/V)
88
95
99
98
97
96
100
0.8360.804
0.9
94
93
92
91
90
89
0.868
6992 G35
DUTY CYCLE (%)
DIVCODE = 4
LTC6992-1/LTC6992-4
3 PARTS
Linearity Near 95% Duty Cycle
V
MOD
/V
SET
(V/V)
88
95
99
98
97
96
100
0.8360.804
0.9
94
93
92
91
90
89
0.868
6992 G36
DUTY CYCLE (%)
DIVCODE = 4
LTC6992-2/LTC6992-3
3 PARTS
Linearity Near 67% Duty Cycle
V
MOD
/V
SET
(V/V)
62
67
71
70
69
68
72
0.612 0.628 0.6440.596
0.676
66
65
64
63
0.66
6992 G37
DUTY CYCLE (%)
DIVCODE = 4
3 PARTS
Linearity Near 0% Duty Cycle
V
MOD
/V
SET
(V/V)
0
7
11
10
9
8
12
0.116 0.1480.084
0.18
6
5
4
3
2
1
6992 G38
DUTY CYCLE (%)
DIVCODE = 4
LTC6992-1/LTC6992-3
3 PARTS
Linearity Near 5% Duty Cycle
V
MOD
/V
SET
(V/V)
0
7
11
10
9
8
12
0.116 0.1480.084
0.18
6
5
4
3
2
1
6992 G39
DUTY CYCLE (%)
DIVCODE = 4
LTC6992-2/LTC6992-4
3 PARTS