Datasheet

LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
6
69921234fc
Frequency Error vs R
SET
Frequency Drift vs Supply Voltage Typical V
SET
Distribution
V
SET
Drift vs I
SET
V
SET
Drift vs Supply V
SET
vs Temperature
R
SET
(k)
50
–3
0
1
2
3
200 400
800
–1
–2
100
6992 G04
ERROR (%)
3 PARTS
GUARANTEED MAX OVER TEMPERATURE
GUARANTEED MIN OVER TEMPERATURE
SUPPLY VOLTAGE (V)
2
–0.5
0
0.2
0.1
0.3
0.4
0.5
4 5
6
–0.2
–0.1
–0.3
–0.4
3
6992 G05
DRIFT (%)
REFERENCED TO V
+
= 4.5V
R
SET
= 50k
R
SET
= 200k
R
SET
= 800k
V
SET
(V)
0.98
0
100
50
150
200
250
0.996 1.004 1.012
1.02
0.988
6992 G06
NUMBER OF UNITS
2 LOTS
DFN AND SOT-23
1274 UNITS
I
SET
(µA)
0
–1.0
0
0.4
0.2
0.6
0.8
1.0
10 15
20
–0.4
–0.2
–0.6
–0.8
5
6992 G07
V
SET
(mV)
REFERENCED TO I
SET
= 10µA
SUPPLY (V)
2
–1.0
0
0.4
0.2
0.6
0.8
1.0
4 5
6
–0.4
–0.2
–0.6
–0.8
3
6992 G08
DRIFT (mV)
REFERENCED TO V
+
= 4V
TEMPERATURE (°C)
–50
0.980
1.000
1.010
1.005
1.015
1.020
0 25 50
100 125
0.995
0.990
0.985
–25
75
6992 G09
V
SET
(V)
3 PARTS
N
DIV
= 1 Duty Cycle Error vs R
SET
N
DIV
= 1 Duty Cycle Error vs R
SET
N
DIV
= 1 Duty Cycle Error vs R
SET
R
SET
(k)
50
–5
0
3
2
1
4
5
100
400 800
–1
–2
–3
–4
200
6992 G10
ERROR (%)
V
MOD
/V
SET
= 0.2 (12.5%)
DIVCODE = 0
3 PARTS
R
SET
(k)
50
–5
0
3
2
1
4
5
100
400 800
–1
–2
–3
–4
200
6992 G11
ERROR (%)
V
MOD
/V
SET
= 0.5 (50%)
DIVCODE = 0
3 PARTS
R
SET
(k)
50
–5
0
3
2
1
4
5
100
400 800
–1
–2
–3
–4
200
6992 G12
ERROR (%)
V
MOD
/V
SET
= 0.8 (87.5%)
DIVCODE = 0
3 PARTS
Typical perForMance characTerisTics
V
+
= 3.3V, R
SET
= 200k, and T
A
= 25°C, unless
otherwise noted.