ISL97671AIRZ-T Intersil, ISL97671AIRZ-T Datasheet - Page 10

• Manufacturer Part Number: ISL97671AIRZ-T
• Description: IC LED DRVR 6-CH BACKLIGHT 20QFN
• Manufacturer: Intersil
• Series: -r

Specifications of ISL97671AIRZ-T

• Constant Current: -
• Constant Voltage: -
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: RGB
• Frequency: 475kHz ~ 640kHz, 970kHz ~ 1.31MHz
• Voltage - Supply: 4.5 V ~ 26.5 V
• Voltage - Output: 45V
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: ISL97671AIRZ-TTR

Typical Performance Curves
FIGURE 15. LINE REGULATION WITH V
FIGURE 17. LOAD REGULATION WITH I
6P12S, 20mA/CH
6P12S, 20mA/CH
ILED = 20mA/DIV
FOR 6P12S AT 20mA/CHANNEL
TO 0% PWM DIMMING, V
AT 20mA/CHANNEL
EN
V
10.0ms/DIV
O
= 1V/DIV
10.0ms/DIV
V
IN
10
= 10V/DIV
FIGURE 19. DIRECT PWM DIMMING MINIMUM DIMMING LINEARITY
I_V
IN
IN
IN
LED
= 12V, 6P12S
= 1A/DIV
CHANGE FROM 26V TO 6V
CHANGE FROM 100%
0.0030
0.0025
0.0020
0.0015
0.0010
ILED = 20mA/DIV
0.006 0.007 0.008 0.009 0.010 0.011 0.012 0.013 0.014
(Continued)
ISL97671A
PWM DIMMING DUTY CYCLE (%)
FIGURE 16. LOAD REGULATION WITH I
FIGURE 18. ISL97672A SHUTS DOWN AND STOPS SWITCHING
6P12S, 20mA/CH
6P12S, 20mA/CH
ILED = 20mA/DIV
I
F
NO CH CAPS
LED
PWM
V
100% PWM DIMMING, V
20mA/CHANNEL
~30ms AFTER EN GOES LOW
O
10.0ms/DIV
= 20mA
= 1V/DIV
EN
= 200Hz
ILED = 20mA/DIV
V
20.0ms/DIV
O
= 10V/DIV
IN
LED
= 12V, 6P12S AT
I_V
CHANGE FROM 0% TO
IN
= 1A/DIV
March 24, 2011
FN7709.1