LTC6993-4 查看數據表（PDF） - Linear Technology
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LTC6993-4 Datasheet PDF : 26 Pages
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LTC6993-1/LTC6993-2
LTC6993-3/LTC6993-4
TYPICAL PERFORMANCE CHARACTERISTICS
V+ = 3.3V, RSET = 200k and TA = 25°C unless otherwise noted.
Typical VSET Distribution
250
2 LOTS
DFN AND SOT-23
200 1274 UNITS
150
100
50
0
0.98
0.988
0.996 1.004
VSET (V)
1.012 1.02
69931234 G19
Supply Current
vs TRIG Pin Voltage
250
200
5V
TRIG FALLING
150
3.3V
TRIG FALLING
100
5V
TRIG RISING
3.3V
TRIG RISING
Supply Current vs Supply Voltage
300
“ACTIVE” = 50% TIMING DUTY CYCLE
250
RSET = 50k
÷1, ACTIVE
200
RSET = 50k
÷1, IDLE
150
RSET = 100k, ÷8, ACTIVE
100
RSET = 100k, ÷8, IDLE
50
CLOAD = 5pF
RLOAD = ∞
0
2
3
RSET = 800k, ÷512
4
5
6
SUPPLY VOLTAGE (V)
69931234 G20
Supply Current vs tOUT (5V)
250
ACTIVE CURRENT MEASURED
WITH TRIGGER PERIOD = 2 • tOUT
200
(50% DUTY CYCLE)
÷1
÷8
150
÷64
÷512
100
Supply Current vs Temperature
250
“ACTIVE” = 50% TIMING DUTY CYCLE
200
RSET = 50k, ÷1, ACTIVE
150
RSET = 50k, ÷1, IDLE
RSET = 100k, ÷8, ACTIVE
100
RSET = 100k, ÷8, IDLE
50
RSET = 800k, ÷512
CLOAD = 5pF
RLOAD = ∞
0
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
69931234 G21
Supply Current vs tOUT (2.5V)
250
ACTIVE CURRENT MEASURED
WITH TRIGGER PERIOD = 2 • tOUT
200
(50% DUTY CYCLE)
150
÷1 ÷8
100
÷64 ÷512
50
CLOAD = 5pF
RLOAD = ∞
0
0
0.2
0.4
0.6
VTRIG/V+ (V/V)
0.8 1.0
69931234 G22
TRIG Threshold Voltage
vs Supply Voltage
3.5
3.0
POSITIVE GOING
2.5
2.0
NEGATIVE GOING
1.5
1.0
0.5
0
2
3
4
5
6
SUPPLY VOLTAGE (V)
69931234 G25
8
50 V+ = 5V
CLOAD = 5pF
RLOAD = ∞
0
0.001 0.01
0.1
1
tOUT (ms)
ACTIVE
IDLE
10 100
69931234 G23
50 V+ = 2.5V
CLOAD = 5pF
RLOAD = ∞
0
0.001 0.01
0.1
1
tOUT (ms)
ACTIVE
IDLE
10 100
69931234 G24
Peak-to-Peak Jitter vs tOUT
1.0
0.9
÷1, 5.5V
0.8
PEAK-TO-PEAK tOUT
VARIATION
MEASURED OVER
30s INTERVALS
0.7
0.6
0.5
÷1, 2.25V
0.4
0.3
÷8, 5.5V
÷512
0.2
0.1 ÷8, 2.25V
0
0.001 0.01
÷64
0.1
1
÷4096
10 100
tOUT (ms)
69931234 G26
Typical ISET Current Limit vs V+
1000
SET PIN SHORTED TO GND
800
600
400
200
0
2
3
4
5
6
SUPPLY VOLTAGE (V)
69931234 G27
69931234fb
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