LTC6992HS6-2 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
LTC6992HS6-2 Datasheet PDF : 34 Pages
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LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
OPERATION
POL = 1 forces a simple logic inversion, so it changes
the duty cycle range of the LTC6992-3 (making it 100%
to 5%) and LTC6992-4 (making it 95% to 0%). These
transfer functions are detailed in Figure 4.
Table 2. Duty Cycle Ranges
PART NUMBER
DUTY CYCLE RANGE vs VMOD = 0V → 1V
POL = 0
POL = 1
LTC6992-1
0% to 100%
100% to 0%
LTC6992-2
5% to 95%
95% to 5%
LTC6992-3
0% to 95%
100% to 5%
LTC6992-4
5% to 100%
95% to 0%
100
VMOD/VSET = 0.1
90
80
70
POL = 1
60
POL = 0
50
40
30
20
10
VMOD/VSET = 0.9
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
VMOD/VSET (V/V)
6992 F04a
LTC6992-1
100
90
VMOD/VSET = 0.14
80
70
POL = 1
60
POL = 0
50
40
30
20
10
VMOD/VSET = 0.86
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
VMOD/VSET (V/V)
6992 F04b
LTC6992-2
100
90
VMOD/VSET = 0.1
80
70
POL = 1
60
POL = 0
50
40
30
20
10
VMOD/VSET = 0.86
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
VMOD/VSET (V/V)
6992 F02c
LTC6992-3
100
90
VMOD/VSET = 0.14
80
70
POL = 1
60
POL = 0
50
40
30
20
10
VMOD/VSET = 0.9
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
VMOD/VSET (V/V)
6992 F02d
LTC6992-4
Figure 4. PWM Transfer Functions for All LTC6992 Family Parts
Rev. D
18
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