ISL97635IRZ-T Intersil, ISL97635IRZ-T Datasheet - Page 3

• Manufacturer Part Number: ISL97635IRZ-T
• Description: IC LED DRVR WHT/RGB BCKLGT 24QFN
• Manufacturer: Intersil
• Type: Backlight, White LED, RGBr

Specifications of ISL97635IRZ-T

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 8
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: RGB, White LED
• Frequency: 600kHz, 1.2MHz
• Voltage - Supply: 6 V ~ 24 V
• Voltage - Output: 34.5V
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 35mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block Diagram
SMBCLK
SMBDAT
PWMO
PWMI
VBL+ = 6V TO 24V
COMP
RSET
f
GND
VDC
PWM
CONTROL
LED PWM
OSC AND
REG
RAMP
COMP
VIN
VIN
INTERFACE
SMBUS
3
+
+
-
-
AMP
GM
PWM BRIGHTNESS CONTROL
DC BRIGHTNESS CONTROL
REFERENCE
GENERATOR
Σ
IMAX
DEVICE CONTROL
FAULT
CONFIGURATION
FAULT/STATUS
IDENTIFICATION
= 0
FAULT/STATUS
REGISTERS
REGISTER
FIGURE 1. ISL97635 BLOCK DIAGRAM
ILIMIT
HIGHEST VF
LOGIC
DETECT
STRING
ISL97635
PWM/OC/SC
AM
+
+
-
-
ISL97635
DRIVER
FET
+
+
-
-
FAULT/STATUS
DETECT
OC, SC
REGISTER
DETECT
OC, SC
LX
LX
OVP
IIN0
IIN0
IIN7
FAULT/STATUS
SENSOR
REGISTER
TEMP
(8x9 = 72 WHITE LEDS)
34.5V, 30mA PER STRING
PGND
December 22, 2008
FN6434.2