Datasheet ISL97801 (Intersil) - 4
| Manufacturer | Intersil |
| Description | High Power LED Driver |
| Pages / Page | 20 / 4 — Typical Performance Curves. 100. 8 LEDs. 5 LEDs. 95 ILEDpeak = 380mA. … |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
Typical Performance Curves. 100. 8 LEDs. 5 LEDs. 95 ILEDpeak = 380mA. 99%@100Hz. 99%@10kHz. LEDpeak = 380mA. 99% @ 10kHz. 50%@1kHz
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Text Version of Document
ISL97801
Typical Performance Curves 100 100 8 LEDs 5 LEDs 95 ILEDpeak = 380mA 95 I 99%@100Hz 99%@10kHz LEDpeak = 380mA 99% @ 10kHz 90 90 50%@1kHz ) 85 85 10%@10kHz 80 50%@100Hz 80 10% @ 10kHz 75 99%@1kHz 10%@1kHz ICIENCY (% 75 F F EFFICIENCY (%) E 99% @ 100Hz 70 50%@10kHz 70 10%@100Hz 65 65 10% @ 100Hz 60 60 6 8 10 12 14 16 18 4 6 8 10 12 14 16 VIN (V) VIN (V) FIGURE 1. 8 LEDs EFFICIENCY vs INPUT VOLTAGE vs FIGURE 2. 5 LEDs EFFICIENCY vs INPUT VOLTAGE vs DIMMING FREQUENCY AND DUTY CYCLE DIMMING FREQUENCY AND DUTY CYCLE 100 100 3 LEDs 95 ILEDpeak = 380mA 95 90 90 8 LEDs ) 99%@100Hz 99%@10kHz 85 85 5 LEDs 80 NCY (% 80 ICIE 75 75 F I 10%@10kHz F LEDpeak = 380mA EFFICIENCY (%) E 70 70 PWM = 10kHz 8 LEDs, VIN = 12V 65 65 10%@100Hz 5 LEDs, VIN = 9V 60 60 4 6 8 10 0 20 40 60 80 100 VIN (V) PWM DIMMING DUTY CYCLE (%) FIGURE 3. 3 LEDs EFFICIENCY vs INPUT VOLTAGE vs FIGURE 4. 8 AND 5 LEDs EFFICIENCY vs PWM DUTY CYCLE DIMMING FREQUENCY AND DUTY CYCLE 400 4 ILEDpeak = 380mA 5 LEDs @ 100Hz 8 LEDs 350 3 8 LEDs, V I IN = 12V LEDpeak = 380mA 2 300 5 LEDs, VIN = 9V 3 LEDs @ 100Hz 3 LEDs, VIN = 5V 1 ) 250 10% @ 100Hz 0 mA (%) ( 200 8 LEDs @ 1kHz -1 8 LEDs @ 10kHz I LED 150 -2
I LED 10% @ 10kHz -3 100 -4 50 99% @ 10kHz -5 5 LEDs @ 10kHz 99% @ 100Hz 0 -6 0 20 40 60 80 100 6 8 10 12 14 16 18 PWM DIMMING DUTY CYCLE (%) VIN (V) FIGURE 5. LEDs PWM DIMMING LINEARITY FIGURE 6. 8 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
FN6428 Rev 1.00 Page 4 of 20 April 2, 2007
Typical Performance Curves 100 100 8 LEDs 5 LEDs 95 ILEDpeak = 380mA 95 I 99%@100Hz 99%@10kHz LEDpeak = 380mA 99% @ 10kHz 90 90 50%@1kHz ) 85 85 10%@10kHz 80 50%@100Hz 80 10% @ 10kHz 75 99%@1kHz 10%@1kHz ICIENCY (% 75 F F EFFICIENCY (%) E 99% @ 100Hz 70 50%@10kHz 70 10%@100Hz 65 65 10% @ 100Hz 60 60 6 8 10 12 14 16 18 4 6 8 10 12 14 16 VIN (V) VIN (V) FIGURE 1. 8 LEDs EFFICIENCY vs INPUT VOLTAGE vs FIGURE 2. 5 LEDs EFFICIENCY vs INPUT VOLTAGE vs DIMMING FREQUENCY AND DUTY CYCLE DIMMING FREQUENCY AND DUTY CYCLE 100 100 3 LEDs 95 ILEDpeak = 380mA 95 90 90 8 LEDs ) 99%@100Hz 99%@10kHz 85 85 5 LEDs 80 NCY (% 80 ICIE 75 75 F I 10%@10kHz F LEDpeak = 380mA EFFICIENCY (%) E 70 70 PWM = 10kHz 8 LEDs, VIN = 12V 65 65 10%@100Hz 5 LEDs, VIN = 9V 60 60 4 6 8 10 0 20 40 60 80 100 VIN (V) PWM DIMMING DUTY CYCLE (%) FIGURE 3. 3 LEDs EFFICIENCY vs INPUT VOLTAGE vs FIGURE 4. 8 AND 5 LEDs EFFICIENCY vs PWM DUTY CYCLE DIMMING FREQUENCY AND DUTY CYCLE 400 4 ILEDpeak = 380mA 5 LEDs @ 100Hz 8 LEDs 350 3 8 LEDs, V I IN = 12V LEDpeak = 380mA 2 300 5 LEDs, VIN = 9V 3 LEDs @ 100Hz 3 LEDs, VIN = 5V 1 ) 250 10% @ 100Hz 0 mA (%) ( 200 8 LEDs @ 1kHz -1 8 LEDs @ 10kHz I LED 150 -2
I LED 10% @ 10kHz -3 100 -4 50 99% @ 10kHz -5 5 LEDs @ 10kHz 99% @ 100Hz 0 -6 0 20 40 60 80 100 6 8 10 12 14 16 18 PWM DIMMING DUTY CYCLE (%) VIN (V) FIGURE 5. LEDs PWM DIMMING LINEARITY FIGURE 6. 8 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
FN6428 Rev 1.00 Page 4 of 20 April 2, 2007
