Datasheet

LTC6994-1/LTC6994-2
7
699412fb
Typical perForMance characTerisTics
Typical V
SET
Distribution
V
+
= 3.3V, R
SET
= 200k and T
A
= 25°C unless otherwise noted.
V
SET
(V)
0.98
0
100
50
150
200
250
0.996 1.004 1.012
1.02
0.988
699412 G19
NUMBER OF UNITS
2 LOTS
DFN AND SOT-23
1274 UNITS
Supply Current vs TemperatureSupply Current vs Supply Voltage
Supply Current vs IN Pin Voltage Supply Current vs t
DELAY
(5V) Supply Current vs t
DELAY
(2.5V)
t
DELAY
(ms)
50
POWER SUPPLY CURRENT (µA)
100
150
200
250
0.001 0.1 1 100
699412 G23
0
0.01
10
ACTIVE
IDLE
V
+
= 5V
C
LOAD
= 5pF
R
LOAD
= ∞
ACTIVE CURRENT MEASURED
USING LTC6994-1 WITH
f
IN
= 1/(2 • t
DELAY
)
÷1
÷8
t
DELAY
(ms)
50
POWER SUPPLY CURRENT (µA)
100
150
200
250
0.001 0.1 1 100
699412 G24
0
0.01
10
ACTIVE
IDLE
V
+
= 2.5V
C
LOAD
= 5pF
R
LOAD
= ∞
÷1
÷8
ACTIVE CURRENT MEASURED
USING LTC6994-1 WITH
f
IN
= 1/(2 • t
DELAY
)
SUPPLY VOLTAGE (V)
2
0
POWER SUPPLY CURRENT (µA)
50
100
150
200
250
300
3 4 5 6
699412 G20
LTC6994-1
I
S(ACTIVE)
MEASURED
WITH f
IN
= 1/(2 • t
DELAY
)
R
SET
= 50k,
÷1, ACTIVE
R
SET
= 100k, ÷8, ACTIVE
R
SET
= 100k, ÷8, IDLE
R
SET
= 800k, ÷512
R
SET
= 50k,
÷1, IDLE
C
LOAD
= 5pF
R
LOAD
= ∞
TEMPERATURE (°C)
–50 –25
0
POWER SUPPLY CURRENT (µA)
50
100
150
200
250
0 25 50 75 100 125
699412 G21
R
SET
= 100k, ÷8, ACTIVE
R
SET
= 50k, ÷1, ACTIVE
R
SET
= 100k, ÷8, IDLE
R
SET
= 50k, ÷1, IDLE
R
SET
= 800k, ÷512
LTC6994-1
I
S(ACTIVE)
MEASURED
WITH f
IN
= 1/(2 • t
DELAY
)
C
LOAD
= 5pF
R
LOAD
= ∞
V
IN
/V
+
(V/V)
0
POWER SUPPLY CURRENT (µA)
150
200
250
0.8
699412 G22
100
50
0
0.2
0.4
0.6
1.0
5V
IN FALLING
5V
IN RISING
3.3V
IN RISING
3.3V
IN FALLING
C
LOAD
= 5pF
R
LOAD
= ∞
Peak-to-Peak Jitter vs t
DELAY
IN Threshold Voltage
vs Supply Voltage
Typical I
SET
Current Limit vs V
+
SUPPLY VOLTAGE (V)
IN PIN VOLTAGE (V)
699412 G25
3.5
1.0
2.0
3.0
0.5
1.5
2.5
0
2 43 5 6
POSITIVE GOING
NEGATIVE GOING
t
DELAY
(ms)
0.4
JITTER (%
P-P
)
0.8
1.2
0.2
0.6
1.0
0.001 0.1 1 10 100
699412 G26
0
0.01
÷1, 5.5V
÷8, 5.5V
÷1, 2.25V
÷8, 2.25V
÷64
÷512
÷4096
PEAK-TO-PEAK
t
DELAY
VARIATION
MEASURED OVER
30s INTERVALS
SUPPLY VOLTAGE (V)
I
SET
(µA)
699412 G27
1000
400
800
200
600
0
2 43 5 6
SET PIN SHORTED TO GND