Datasheet
LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
11
69921234fc
Typical perForMance characTerisTics
Output Resistance
vs Supply Voltage
Rise and Fall Time
vs Supply Voltage
Typical I
SET
Current Limit vs V
+
SUPPLY VOLTAGE (V)
RISE/FALL TIME (ns)
6992 G51
3.0
1.5
2.5
1.0
0.5
2.0
0
2 43 5 6
C
LOAD
= 5pF
t
RISE
t
FALL
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE (Ω)
6992 G50
50
25
20
35
45
5
10
15
30
40
0
2 43 5 6
OUTPUT SOURCING CURRENT
OUTPUT SINKING CURRENT
SUPPLY VOLTAGE (V)
I
SET
(µA)
6992 G52
1000
400
800
200
600
0
2 43 5 6
SET PIN SHORTED TO GND
V
+
= 3.3V, R
SET
= 200k, and T
A
= 25°C, unless
otherwise noted.
Typical Start-Up, POL = 0
Typical Start-Up, POL = 1
V
+
1V/DIV
OUT
1V/DIV
V
+
= 2.5V
DIVCODE = 3 (÷64)
R
SET
= 50k
V
MOD
= 0.3V (~25% DUTY CYCLE)
100µs/DIV
6992 G53
500µs
V
+
1V/DIV
OUT
1V/DIV
V
+
= 2.5V
DIVCODE = 12 (÷64, POL = 1)
R
SET
= 50k
V
MOD
= 0.2V (~87.5% DUTY CYCLE)
100µs/DIV
6992 G54
500µs
125kHz Full Modulation
V
MOD
0.5V/DIV
OUT
1V/DIV
V
+
= 3.3V
DIVCODE = 1
R
SET
= 100k
50µs/DIV
6992 G55
LTC6992-1
Typical Frequency Error vs
Time (Long-Term Drift)
TIME (h)
DELTA FREQUENCY (ppm)
6992 G48a
50
0
150
–150
–100
–50
100
200
–200
0 1200400 800 1600 2000 2400 2800
65 UNITS
SOT-23 AND DFN PARTS
T
A
= 30°C