ISL97684IRTZ-T Intersil, ISL97684IRTZ-T Datasheet - Page 8
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ISL97684IRTZ-T
Manufacturer Part Number
ISL97684IRTZ-T
Description
4 Channel LED Driver, 16LD TQFN 3X3, T&R
Manufacturer
Intersil
Series
-r
Datasheet
1.ISL97682IRTZ.pdf
(17 pages)
Specifications of ISL97684IRTZ-T
Constant Current
-
Constant Voltage
-
Topology
PWM, Step-Up (Boost)
Number Of Outputs
4
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
-
Frequency
500kHz ~ 650kHz, 900kHz ~ 1.1MHz
Voltage - Supply
4 V ~ 26.5 V
Voltage - Output
45V
Mounting Type
Surface Mount
Package / Case
16-WFQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Typical Performance Curves
FIGURE 11. QUIESCENT CURRENT vs V
FIGURE 13. LINE REGULATION WITH V
FIGURE 9. CURRENT LINEARITY vs LOW LEVEL PWM DIMMING
I
IN
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
(0.5A/DIV)
5
4
3
2
1
0
0
0
0
DUTY CYCLE AT 12V
LEDS CONNECTED
FOR 4P10S AT 20mA/C
0.8
5
ILED (20mA/DIV)
V
IN
1.6
10
(5V/DIV)
MEASURED
8
DC (%)
V
IN
IN
2.4
15
FOR 4P10S AT 20mA/CH
(V)
ISL97682, ISL97683, ISL97684
IN
IN
CHANGE FROM 6V TO 26V
WITH EN = HIGH, NO
3.2
20
CALCULATED
25
4.0
(Continued)
4.8
30
FIGURE 10. CURRENT LINEARITY vs PWM DIMMING DUTY CYCLE
FIGURE 12. CHANNEL VOLTAGE vs V
FIGURE 14. LINE REGULATION WITH V
I
IN
1.0
0.8
0.6
0.4
0.2
32
30
28
26
24
22
20
18
16
14
12
10
0
8
6
4
2
0
(0.5A/DIV)
0
0
AT 12V
20mA/CH
FOR 4P10S AT 20mA/CH
CH4
20
ILED (20mA/DIV)
CH2
IN
DIMMING DUTY CYCLE (%)
FOR 4P10S AT 20mA/CH
10
V
CH1
IN
40
(5V/DIV)
CH1
CH3
V
IN
(V)
IN
CH4
60
IN
FOR V
20
CHANGE FROM 26V TO 6V
CH3
IN
80
= 12V AT 4P10S AT
CH2
March 11, 2011
100
30
FN7689.0