ISL1903EVAL2Z INTERSIL [Intersil Corporation], ISL1903EVAL2Z Datasheet - Page 12

• Manufacturer Part Number: ISL1903EVAL2Z
• Description: Dimmable Buck LED Driver - AC Mains or DC Input LED Driver
• Manufacturer: INTERSIL [Intersil Corporation]

Test Waveforms and Circuits
Typical Performance Curves
1.001
1.000
0.999
0.998
0.997
0.996
2.5
2.0
1.5
1.0
0.5
FIGURE 6. REFERENCE VOLTAGE vs TEMPERATURE
0
-40 -25 -10
0
OUT
OC
FIGURE 8. DELAY vs DELADJ RESISTANCE
25
FIGURE 4. OC +LEB TO OUT DELAY
50
5
DELAY RESISTANCE (kΩ)
75
TEMPERATURE (°C)
20
12
100
35
LEADING EDGE BLANKING
OC PROPAGATION DELAY
OC + LEB TO OUT DELAY
OC THRESHOLD
50
125
65
150
80
175
95
200
110 125
(Continued)
225
ISL1903
MAINS
FIGURE 9. PWMOUT DUTY CYCLE vs AC SIGNAL DUTY CYCLE
DHC
AC
500
400
300
200
100
100
FIGURE 7. EA REFERENCE vs AC SIGNAL DUTY CYCLE
80
60
40
20
0
0
0
0
FIGURE 5. AC MAINS TO DHC TIMING
AC CONDUCTION ANGLE (% DUTY CYCLE 120Hz)
AC CONDUCTION ANGLE (% DUTY CYCLE 120Hz)
10
10
20
20
30
30
40
40
50
50
60
60
t
DELAY
70
70
September 20, 2012
80
80
t
DELAY
90
90
FN8285.1
100
100