ISL97801ARZ-TK Intersil, ISL97801ARZ-TK Datasheet - Page 7

• Manufacturer Part Number: ISL97801ARZ-TK
• Description: IC LED DRIVER AUTOMOTIVE 20-QFN
• Manufacturer: Intersil
• Type: Automotiver

Specifications of ISL97801ARZ-TK

• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Frequency: 850kHz ~ 1.15MHz
• Voltage - Supply: 2.7 V ~ 16 V
• Voltage - Output: 32V
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Operating Temperature: -40°C ~ 105°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL97801ARZ-TK

Typical Performance Curves
FIGURE 23. TRANSIENT RESPONSE OPERATES FROM
8 LEDs V
FIGURE 19. 50% PWM DIMMING AT 100Hz
FIGURE 21. 10% PWM DIMMING AT 1kHz
O
TRANSIENT RESPONSE WHEN LOAD DYNAMICALLY
8 TO 7 LEDs
8 LEDs
V
PWM = 1kHz
IN
= 12V
CHANGES FROM 8 LEDs TO 7 LEDs
8 LEDs
V
PWM = 100Hz
IN
= 16V
7
I
LED
(Continued)
7 LEDs V
V
= 350mA
IN
= 12V
O
ISL97801
FIGURE 24. TRANSIENT RESPONSE OPERATES FROM
TRANSIENT RESPONSE WHEN LOAD DYNAMICALLY
CHANGES FROM 7LEDs TO 8LEDs
V
I
LED
7 LEDs V
IN
FIGURE 22. 50% PWM DIMMING AT 1kHz ZOOM-IN
= 12V
= 350mA
8 LEDs V
FIGURE 20. 50% PWM DIMMING AT 10kHz
O
7 TO 8 LEDs
IN
= 16V
8 LEDs
V
PWM = 10kHz
DUTY CYCLE = 50%
IN
= 16V
PWM = 1kHz
8 LEDs V
O
April 2, 2007
FN6428.1