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EL1848IWTZ-T7A [RENESAS]

IC LED DRIVR WHITE BCKLGT TSOT-8;
EL1848IWTZ-T7A
型号： EL1848IWTZ-T7A
厂家： RENESAS TECHNOLOGY CORP    RENESAS TECHNOLOGY CORP
描述：

IC LED DRIVR WHITE BCKLGT TSOT-8
文件： 总12页 (文件大小：689K)
中文：  中文翻译
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DATASHEET  
EL1848  
White LED Step-Up Regulator  
FN7427  
Rev 0.00  
March 31, 2004  
The EL1848 is a constant current boost regulator specially  
designed for driving white LEDs. It can drive 3 LEDs in  
series or up to 9 LEDs in parallel/series configuration and  
achieves efficiency up to 91%.  
Features  
• 2.6V to 13.2V input voltage  
• 14V maximum output voltage  
The brightness of the LEDs is adjusted through a voltage  
level on the CNTL pin. When the level falls below 0.1V, the  
chip goes into shut-down mode and consumes less than  
• Drives up to 9 LEDs, 3 in a series  
• 1MHz switching frequency  
• Up to 91% efficiency  
1µA of supply current for V less than 5.5V.  
IN  
• 1µA maximum shut-down current  
• Dimming control  
The EL1848 is available in 8-pin TSOT and MSOP  
packages. The TSOT is just 1mm high, compared to  
1.45mm for the standard SOT-23 package.  
• 8-pin TSOT and MSOP packages  
• Pb-free Available  
Ordering Information  
PART  
NUMBER  
Applications  
• PDAs  
PACKAGE  
8-Pin TSOT  
8-Pin TSOT  
TAPE & REEL PKG. DWG. #  
EL1848IWT-T7  
EL1848IWT-T7A  
7” (3K pcs)  
7” (250 pcs)  
7” (3K pcs)  
MDP0049  
MDP0049  
MDP0049  
• Cellular phones  
• Digital cameras  
• White LED backlighting  
EL1848IWTZ-T7  
(See Note)  
8-Pin TSOT  
(Pb-free)  
EL1848IWTZ-  
T7A (See Note)  
8-Pin TSOT  
(Pb-free)  
7” (250 pcs)  
MDP0049  
Typical Connection  
EL1848IY  
8-Pin MSOP  
8-Pin MSOP  
8-Pin MSOP  
-
MDP0043  
MDP0043  
MDP0043  
D
L
2.6V TO  
EL1848IY-T7  
EL1848IY-T13  
7”  
C
5.5V  
C
2
33µH  
1
4.7µF  
1µF  
13”  
NOTE: Intersil Pb-free products employ special Pb-free material  
sets; molding compounds/die attach materials and 100% matte tin  
plate termination finish, which is compatible with both SnPb and  
Pb-free soldering operations. Intersil Pb-free products are MSL  
classified at Pb-free peak reflow temperatures that meet or exceed  
the Pb-free requirements of IPC/JEDEC J Std-020B.  
VIN  
LX  
VOUT  
CS  
R
1
5  
V
CNTL  
PGND  
CTRL  
COMP SGND  
C
3
0.1µF  
FN7427 Rev 0.00  
March 31, 2004  
Page 1 of 12  
EL1848  
Pinouts  
EL1848  
(8-PIN TSOT)  
TOP VIEW  
EL1848  
(8-PIN MSOP)  
TOP VIEW  
COMP  
CNTL  
VOUT  
LX  
1
2
3
4
8
7
6
5
VIN  
CS  
VIN  
1
2
3
4
8
7
6
5
CNTL  
COMP  
LX  
CS  
SGND  
PGND  
PGND  
SGND  
VOUT  
FN7427 Rev 0.00  
March 31, 2004  
Page 2 of 12  
EL1848  
Absolute Maximum Ratings (T = 25°C)  
A
COMP, CNTL, CS to SGND. . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V  
SGND to PGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V  
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C  
Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C  
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves  
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125°C  
V
V
to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+14V  
IN  
to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+14V  
OUT  
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+16V  
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the  
device at these or any other conditions above those indicated in the operational sections of this specification is not implied. This part is ESD sensitive. Handle with care.  
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests areat  
the specified temperature and are pulsed tests, therefore: T = T = T  
A
J
C
Electrical Specifications  
V
= 3V, V = 12V, C = 4.7µF, L = 33µH, C = 1µF, C = 0.1µF, R = 5, T = 25°C, unless otherwise  
IN  
specified.  
O
1
2
3
1
A
PARAMETER  
DESCRIPTION  
Input Voltage  
Total Input Current at Shut-down  
CONDITIONS  
MIN  
TYP  
MAX  
13.2  
1
UNIT  
V
V
2.6  
IN  
I
I
I
V
V
= 0V  
µA  
mA  
µA  
V
Q1  
CNTL  
CNTL  
Quiescent Supply Current at V Pin  
O
= 1V, load disconnected  
1
1.5  
20  
Q1  
COMP Pin Pull-up Current  
COMP Voltage Swing  
CNTL Shut-down Current  
Chip Enable Voltage  
COMP connected to SGND  
11  
1.5  
COMP  
V
0.5  
2.5  
1
COMP  
I
CNTL = 0V  
µA  
mV  
mV  
mA  
V
CNTL  
V
V
240  
CNTL1  
Chip Disable Voltage  
100  
16  
CNTL2  
I
V
= 1V  
V
V
V
= 1V  
CNTL  
14  
13  
15  
14  
12  
OUT_ACCURACY  
CNTL  
V
V
Over-voltage Threshold  
Over-voltage Threshold  
MOSFET Current Limit  
MOSFET On-resistance  
MOSFET Leakage Current  
Switching Frequency  
Maximum Duty Ratio  
CS Input Bias Current  
Line Regulation  
rising  
15  
OUT1  
OUT2  
OUT  
OUT  
falling, with resistive load  
11  
13  
V
ILX  
400  
mA  
R
0.7  
DS_ON  
I
V
V
V
= 0V, V = 12V  
LX  
1
µA  
kHz  
%
LEAK  
CNTL  
CNTL  
F
800  
85  
1000  
90  
1200  
S
D
= 2V, I = 0  
S
MAX  
I
1
µA  
%/V  
CS  
I /V  
= 2.6V - 5.5V  
IN  
0.03  
O
IN  
Pin Descriptions  
PIN NUMBER  
PIN NAME  
DESCRIPTION  
1
2
COMP  
CNTL  
Compensation pin. A compensation cap (4700pF to 1µF) is normally connected between this pin and SGND.  
Control pin for dimming and shut-down. A voltage between 250mV and 5.5V controls the brightness, and less  
than 100mV shuts down the converter.  
3
4
5
6
7
8
VOUT  
LX  
Output voltage sense. Use for over voltage protection.  
Inductor connection pin. The drain of internal MOSFET.  
PGND  
SGND  
CS  
Power Ground pin. The source of internal MOSFET.  
Signal Ground. Ground pin for internal control circuitry. Needs to connect to PGND at only one point.  
Current sense pin. Connect to sensing resistor to set the LED bias current.  
Power supply for internal control circuitry.  
VIN  
FN7427 Rev 0.00  
March 31, 2004  
Page 3 of 12  
EL1848  
Block Diagram  
2.6V TO  
5.5V  
C
V
IN  
IN  
4.7µF  
REFERENCE  
GENERATOR  
1MHz  
OSCILLATOR  
THERMAL  
SHUTDOWN  
L
33µH  
OVER-VOLTAGE  
PROTECTION  
V
OUT  
LX  
C
OUT  
PWM  
COMP  
+
+
+
LOGIC  
1µF  
C
COMP  
0.1µF  
BOOST  
I-SENSE  
I(LED)  
START-UP  
CONTROL  
PGND  
PWM  
SIGNAL  
ERROR AMP  
C
S
+
-
5  
617K  
50K  
CNTL  
V
CNTL  
SGND  
Typical Performance Curves  
All performance curves and waveforms are taken with C = 4.7µF, C = 1µF, C = 0.1µF, L = 33µF, V = 3.3V, V  
= 1V, R = 5, 3 LEDs in a  
1
1
2
3
IN  
CNTL  
series; unless otherwise specified.  
1.05  
3.5  
3
V
=0V, 0.1V  
CNTL  
WHITE LEDs DISCONNECTED  
1.04  
1.03  
1.02  
1.01  
1
2.5  
2
1.5  
1
0.5  
0
2.5  
2.5  
3
3.5  
4
4.5  
5
5.5  
4.5  
6.5  
8.5  
(V)  
10.5  
12.5  
14.5  
V
(V)  
V
IN  
IN  
FIGURE 1. SWITCHING FREQUENCY vs V  
FIGURE 2. QUIESCENT CURRENT  
IN  
FN7427 Rev 0.00  
March 31, 2004  
Page 4 of 12  
EL1848  
Typical Performance Curves (Continued)  
All performance curves and waveforms are taken with C = 4.7µF, C = 1µF, C = 0.1µF, L = 33µF, V = 3.3V, V  
= 1V, R = 5, 3 LEDs in a  
1
1
2
3
IN  
CNTL  
series; unless otherwise specified.  
V
=1V  
CNTL  
35  
30  
25  
20  
15  
10  
5
16  
15.8  
15.6  
15.4  
15.2  
15  
14.8  
14.6  
14.4  
14.2  
14  
0
0
0.5  
1
1.5  
(V)  
2
2.5  
2.5  
3
3.5  
4
4.5  
5
5.5  
V
CNTL  
V
(V)  
IN  
FIGURE 3. I  
vs V  
FIGURE 4. I  
vs V  
LED IN  
LED  
CNTL  
BAT54HT1  
L
2 LEDs IN A SERIES  
V
90  
85  
80  
75  
70  
IN  
33µH  
4.7µF  
1µF  
V
=4.2V  
IN  
V
=2.7V  
IN  
8
4
VIN  
LX  
3
7
5
6
VOUT  
CS  
5  
L=COILCRAFT LPO1704-333CM  
2
1
V
CNTL PGND  
COMP SGND  
CTRL  
5
10  
15  
20  
(mA)  
25  
O
30  
I
O
0.1µF  
FIGURE 5A. 2 LEDs IN A SERIES  
FIGURE 5B. EFFICIENCY vs I  
FIGURE 5.  
BAT54HT1  
L
V
IN  
3 LEDs IN A SERIES  
33µH  
90  
85  
80  
75  
70  
4.7µF  
1µF  
V
=4.2V  
IN  
8
4
VIN  
LX  
V
=2.7V  
IN  
3
7
5
6
VOUT  
CS  
5  
2
1
V
CNTL PGND  
COMP SGND  
CTRL  
L=COILCRAFT LPO1704-333CM  
5
10  
15  
20  
(mA)  
25  
O
30  
I
0.1µF  
O
FIGURE 6B. EFFICIENCY vs I  
FIGURE 6A. 3 LEDs IN A SERIES  
FIGURE 6.  
FN7427 Rev 0.00  
March 31, 2004  
Page 5 of 12  
EL1848  
Typical Performance Curves (Continued)  
All performance curves and waveforms are taken with C = 4.7µF, C = 1µF, C = 0.1µF, L = 33µF, V = 3.3V, V  
= 1V, R = 5, 3 LEDs in a  
1
1
2
3
IN  
CNTL  
series; unless otherwise specified.  
BAT54HT1  
L
2 LEGS OF 2 LEDs IN A SERIES  
V
IN  
90  
85  
80  
75  
70  
33µH  
4.7µF  
1µF  
1µF  
1µF  
V
V
=4.2V  
=2.7V  
IN  
8
4
VIN  
LX  
IN  
3
7
5
6
VOUT  
CS  
5  
5  
2
1
V
CTRL  
CNTL PGND  
COMP SGND  
L=COILCRAFT LPO1704-333CM  
10  
20  
30  
40  
(mA)  
50  
60  
I
O
0.1µF  
FIGURE 7A. 2 LEGS OF 2 LEDs IN A SERIES  
FIGURE 7B. EFFICIENCY vs I  
O
FIGURE 7.  
BAT54HT1  
L
2 LEGS OF 3 LEDs IN A SERIES  
V
IN  
33µH  
90  
85  
80  
75  
70  
4.7µF  
V
=4.2V  
=2.7V  
IN  
8
4
VIN  
LX  
V
IN  
3
7
5
6
VOUT  
CS  
5  
5  
2
1
V
CTRL  
CNTL PGND  
COMP SGND  
L=SUMIDA CMD13D13-33µH  
10  
20  
30  
40  
(mA)  
50  
60  
I
0.1µF  
O
FIGURE 8B. EFFICIENCY vs I  
O
FIGURE 8A. 2 LEGS OF 3 LEDs IN A SERIES  
FIGURE 8.  
BAT54HT1  
L
V
IN  
3 LEGS OF 2 LEDs IN A SERIES  
95  
90  
85  
80  
75  
70  
15µH  
4.7µF  
V
=4.2V  
IN  
8
4
VIN  
LX  
V
=2.7V  
IN  
3
7
5
6
VOUT  
CS  
V
CTRL  
5  
5  
5  
2
1
L=SUMIDA CMD13D13-15µH  
CNTL PGND  
COMP SGND  
15  
35  
55  
75  
95  
I
(mA)  
O
0.1µF  
FIGURE 9A. 3 LEGS OF 2 LEDs IN A SERIES  
FIGURE 9B. EFFICIENCY vs I  
O
FIGURE 9.  
FN7427 Rev 0.00  
March 31, 2004  
Page 6 of 12  
EL1848  
Typical Performance Curves (Continued)  
All performance curves and waveforms are taken with C = 4.7µF, C = 1µF, C = 0.1µF, L = 33µF, V = 3.3V, V  
= 1V, R = 5, 3 LEDs in a  
1
1
2
3
IN  
CNTL  
series; unless otherwise specified.  
BAT54HT1  
V
L
IN  
3 LEGS OF 3 LEDs IN A SERIES  
95  
90  
85  
80  
75  
70  
15µH  
4.7µF  
1µF  
V
=4.2V  
IN  
8
4
VIN  
LX  
V
=2.7V  
IN  
3
7
5
6
VOUT  
CS  
V
CTRL  
5  
5  
5  
2
1
L=SUMIDA CMD13D13-15µH  
CNTL PGND  
COMP SGND  
15  
35  
55  
75  
95  
I
(mA)  
O
0.1µF  
FIGURE 10A. 3 LEGS OF 3 LEDs IN A SERIES  
JEDEC JESD51-7 HIGH EFFECTIVE  
FIGURE 10B. EFFICIENCY vs I  
O
FIGURE 10.  
JEDEC JESD51-3 LOW EFFECTIVE  
THERMAL CONDUCTIVITY TEST BOARD  
THERMAL CONDUCTIVITY TEST BOARD  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
1
0.9  
870mW  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
486mW  
MSOP8/10  
MSOP8/10  
=115°C/W  
=206°C/W  
JA  
JA  
0
25  
50  
75 85 100  
125  
0
25  
50  
75 85 100  
125  
AMBIENT TEMPERATURE (°C)  
AMBIENT TEMPERATURE (°C)  
FIGURE 12. PACKAGE POWER DISSIPATION vs AMBIENT  
TEMPERATURE  
FIGURE 11. PACKAGE POWER DISSIPATION vs AMBIENT  
TEMPERATURE  
FN7427 Rev 0.00  
March 31, 2004  
Page 7 of 12  
EL1848  
Waveforms  
All performance curves and waveforms are taken with C = 4.7µF, C = 1µF, C = 0.1µF, L = 33µF, V = 3.3V, V  
= 1V, R = 5, 4 LEDs in a  
1
2
3
IN  
CNTL  
1
series; unless otherwise specified.  
C =4700pF  
3
I
50mA/DIV  
IN  
V
I
IN  
2V/DIV  
50mA/DIV  
V
1V/DIV  
IN  
CNTL  
I
10mA/DIV  
LED  
V
1V/DIV  
CNTL  
I
10mA/DIV  
LED  
0.1ms/DIV  
10ms/DIV  
FIGURE 14. SHUT-DOWN  
FIGURE 13. START-UP  
I
=15mA  
LED  
2V  
1V  
10mV/DIV  
V  
IN  
V
CNTL  
I
100mA/DIV  
L
14.2V  
12.9V  
V
O
30mA  
V
10V/DIV  
LX  
I
LED  
15mA  
V  
50mV/DIV  
O
1µs/DIV  
20ms/DIV  
FIGURE 15. TRANSIENT RESPONSE  
FIGURE 16. CONTINUOUS CONDUCTION MODE  
V
=0.34V, I =5mA  
CTRL LED  
V  
10mV/DIV  
IN  
V
V
(5V/DIV)  
O
I
100mA/DIV  
L
(1V/DIV)  
V
COMP  
LX  
10V/DIV  
V  
50mV/DIV  
O
1µs/DIV  
FIGURE 17. DISCONTINUOUS CONDUCTION MODE  
FIGURE 18. OVER VOLTAGE PROTECTION (LED  
DISCONNECTED)  
FN7427 Rev 0.00  
March 31, 2004  
Page 8 of 12  
EL1848  
hiccough continues until LED is applied or converter is shut  
down.  
Detailed Description  
The EL1848 is a constant current boost regulator specially  
designed for driving white LEDs. It can drive up to 3 LEDs in  
series or 9 LEDs in parallel/series configuration and achieves  
efficiency up to 91%.  
When designing the converter, caution should be taken to  
ensure the highest operating LED voltage does not exceed  
13V, the minimum shut-down voltage. There is no external  
component required for this function.  
The brightness of the LEDs is adjusted through a voltage level  
on the CNTL pin. When the level falls below 0.1V, the chip  
goes into shut-down mode and consumes less than 1µA of  
Component Selection  
The input and output capacitors are not very important for the  
converter to operate normally. The input capacitance  
is normally 0.22µF - 4.7µF and output capacitance  
current for V less than 5.5V.  
IN  
Steady-State Operation  
0.22µF - 1µF. Higher capacitance is allowed to reduce the  
voltage/current ripple, but at added cost. Use X5R or X7R type  
(for its good temperature characteristics) of ceramic capacitors  
with correct voltage rating and maximum height.  
EL1848 is operated in constant frequency PWM. The switching  
is around 1MHz. Depending on the input voltage, the  
inductance, the type of LEDs driven, and the LED’s current, the  
converter operates at either continuous conduction mode or  
discontinuous conduction mode (see waveforms). Both are  
normal.  
When choosing an inductor, make sure the inductor can  
handle the average and peak currents giving by following  
formulas (80% efficiency assumed):  
Brightness Control  
I
V  
O
LED’s current is controlled by the voltage level on CNTL pin  
O
I
I
= -----------------------  
LAVG  
LPK  
(V  
). This voltage can be either a DC or a PWM signal with  
0.8 V  
CNTL  
IN  
frequency less than 200Hz (for C =4700pF). When a higher  
3
frequency PWM is used, an RC filter is recommended before  
the CNTL pin (see Figure 17).  
1
= I  
+ --  I  
LAVG  
L
2
V
 V – V  
IN  
IN  
O
I = --------------------------------------------  
L
L V F  
O
S
where:  
100K  
PWM  
CNTL  
• I is the peak-to-peak inductor current ripple in Ampere  
L
SIGNAL  
0.1µF  
COMP  
• L inductance in µH  
• FS switching frequency, typical 1MHz  
A wide range of inductance (6.8µH - 68µH) can be used for the  
converter to function correctly. For the same series of  
inductors, the lower inductance has lower DC resistance  
(DCR), which has less conducting loss. But the ripple current is  
bigger, which generates more RMS current loss. Figure 9  
shows the efficiency of the demo board under different  
inductance for a specific series of inductor. For optimal  
efficiency in an application, it is a good exercise to check  
several adjacent inductance values of your preferred series of  
inductors.  
FIGURE 19. PWM BRIGHTNESS CONTROL  
The relationship between the LED current and CNTL voltage  
level is as follows:  
V
CNTL  
I
= ----------------------------  
LED  
13.33 R  
1
When R is 5, 1V of V  
CNTL  
conveniently sets I  
to 15mA.  
LED  
1
The range of V  
is 250mV to 5.5V.  
CNTL  
Shut-Down  
When V  
is less than 100mV, the converter is in shut-down  
mode. The max current consumed by the chip is less than 1µA  
CNTL  
for V less than 5.5V.  
IN  
Over-Voltage Protection  
When an LED string is disconnected from the output, V will  
O
continue to rise because of no current feedback. When V  
O
reaches 14V (nominal), the chip will shut down. The output  
voltage will drop. When V drops below 11V (nominal), the  
O
chip will boost output voltage again until it reaches 14V. This  
FN7427 Rev 0.00  
March 31, 2004  
Page 9 of 12  
EL1848  
For the same inductance, higher overall efficiency can be  
obtained by using lower DCR inductor.  
The demo board is a good example of layout based on the  
principle. Please refer to the EL1848 Application Brief for the  
layout.  
EFFICIENCY vs I  
O
85  
83  
81  
79  
77  
V
=3.3V FOR  
IN  
DIFFERENT L  
L=22µH  
L=33µH  
L=15µH  
L=10µH  
L=Coilcraft  
LPO1704 SERIES  
1mm HEIGHT  
5
10  
15  
20  
(mA)  
25  
30  
I
O
FIGURE 20. EFFICIENCY OF DIFFERENT INDUCTANCE  
(4 LEDs IN A SERIES)  
The diode should be Schottky type with minimum reverse  
voltage of 20V. The diode's peak current is the same as  
inductor's peak current, the average current is I , and RMS  
O
current is:  
I
=
I
I  
LAVG O  
DRMS  
Ensure the diode's ratings exceed these current requirements.  
White LED Connections  
One leg of LEDs connected in series will ensure the uniformity  
of the brightness. 14V maximum voltage enables 3 LEDs can  
be placed in series.  
However, placing LEDs into series/parallel connection can give  
higher efficiency as shown in the efficiency curves. One of the  
ways to ensure the brightness uniformity is to pre-screen the  
LEDs.  
PCB Layout Considerations  
The layout is very important for the converter to function  
properly. Power Ground ( ) and Signal Ground ( ) should be  
separated to ensure the high pulse current in the power ground  
does not interference with the sensitive signals connected to  
Signal Ground. Both grounds should only be connected at one  
point right at the chip. The heavy current paths (V -L-L pin-  
IN  
X
PGND, and V -L-D-C -PGND) should be as short as  
IN  
2
possible.  
The trace connected to the CS pin is most important. The  
current sense resister R should be very close to the pin When  
1
the trace is long, use a small filter capacitor close to the CS  
pin.  
The heat of the IC is mainly dissipated through the PGND pin.  
Maximizing the copper area around the plane is preferable. In  
addition, a solid ground plane is always helpful for the EMI  
performance.  
FN7427 Rev 0.00  
March 31, 2004  
Page 10 of 12  
EL1848  
TSOT Package Outline Drawing  
FN7427 Rev 0.00  
March 31, 2004  
Page 11 of 12  
EL1848  
MSOP Package Outline Drawing  
NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at  
<http://www.intersil.com/design/packages/index.asp>  
© Copyright Intersil Americas LLC 2004. All Rights Reserved.  
All trademarks and registered trademarks are the property of their respective owners.  
For additional products, see www.intersil.com/en/products.html  
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted  
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html  
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such  
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are  
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its  
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Intersil or its subsidiaries.  
For information regarding Intersil Corporation and its products, see www.intersil.com  
FN7427 Rev 0.00  
March 31, 2004  
Page 12 of 12  

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