FDML7610S [ONSEMI]

30 V非对称双N沟道MOSFET PowerTrench®功率级;
FDML7610S
型号: FDML7610S
厂家: ONSEMI    ONSEMI
描述:

30 V非对称双N沟道MOSFET PowerTrench®功率级

开关 脉冲 光电二极管 晶体管
文件: 总16页 (文件大小:661K)
中文:  中文翻译
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April 2013  
FDML7610S  
PowerTrench® Power Stage  
Asymmetric Dual N-Channel MOSFET  
Features  
General Description  
Q1: N-Channel  
This device includes two specialized N-Channel MOSFETs in a  
dual MLP package.The switch node has been internally  
connected to enable easy placement and routing of synchronous  
buck converters. The control MOSFET (Q1) and synchronous  
SyncFETTM (Q2) have been designed to provide optimal power  
efficiency.  
„ Max rDS(on) = 7.5 mΩ at VGS = 10 V, ID = 12 A  
„ Max rDS(on) = 12 mΩ at VGS = 4.5 V, ID = 10 A  
Q2: N-Channel  
„ Max rDS(on) = 4.2 mΩ at VGS = 10 V, ID = 17 A  
„ Max rDS(on) = 5.5 mΩ at VGS = 4.5 V, ID = 14 A  
Applications  
„ RoHS Compliant  
„ Computing  
„ Communications  
„ General Purpose Point of Load  
„ Notebook VCORE  
D1  
D1  
D1  
Pin 1  
G1  
Q2  
D1  
D1  
S2  
5
6
7
8
4
3
2
1
PHASE  
(S1/D2)  
PHASE  
D1  
D1  
S2  
S2  
G2  
S2  
S2  
S2  
G1  
Q1  
G2  
Top  
Bottom  
MLP 3X4.5  
MOSFET Maximum Ratings TA = 25 °C unless otherwise noted  
Symbol  
VDS  
VGS  
Parameter  
Q1  
30  
Q2  
Units  
Drain to Source Voltage  
Gate to Source Voltage  
30  
±20  
28  
V
V
(Note 3)  
TC = 25 °C  
TC = 25 °C  
TA = 25 °C  
±20  
30  
Drain Current  
-Continuous (Package limited)  
-Continuous (Silicon limited)  
-Continuous  
40  
121a  
60  
171b  
ID  
A
-Pulsed  
40  
40  
Power Dissipation for Single Operation  
TA = 25 °C  
TA = 25 °C  
2.11a  
0.81c  
2.21b  
0.91d  
PD  
W
TJ, TSTG  
Operating and Storage Junction Temperature Range  
-55 to +150  
°C  
Thermal Characteristics  
RθJA  
RθJA  
RθJC  
Thermal Resistance, Junction to Ambient  
601a  
1501c  
561b  
1401d  
3.5  
Thermal Resistance, Junction to Ambient  
Thermal Resistance, Junction to Case  
°C/W  
4
Package Marking and Ordering Information  
Device Marking  
Device  
Package  
Reel Size  
13 ”  
Tape Width  
Quantity  
FDML7610S  
FDML7610S  
MLP3X4.5  
12 mm  
3000 units  
1
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
Electrical Characteristics TJ = 25 °C unless otherwise noted  
Symbol  
Parameter  
Test Conditions  
Type  
Min  
Typ  
Max  
Units  
Off Characteristics  
ID = 250 μA, VGS = 0 V  
ID = 1 mA, VGS = 0 V  
Q1  
Q2  
30  
30  
BVDSS  
Drain to Source Breakdown Voltage  
V
ΔBVDSS  
ΔTJ  
Breakdown Voltage Temperature  
Coefficient  
ID = 250 μA, referenced to 25 °C  
Q1  
Q2  
15  
14  
mV/°C  
I
D = 10 mA, referenced to 25 °C  
Q1  
Q2  
1
500  
μA  
μA  
IDSS  
IGSS  
Zero Gate Voltage Drain Current  
Gate to Source Leakage Current  
VDS = 24 V, VGS = 0 V  
VGS = 20 V, VDS= 0 V  
Q1  
Q2  
100  
100  
nA  
nA  
On Characteristics  
V
GS = VDS, ID = 250 μA  
Q1  
Q2  
1
1
1.8  
1.8  
3
3
VGS(th)  
Gate to Source Threshold Voltage  
V
VGS = VDS, ID = 1 mA  
ΔVGS(th)  
ΔTJ  
Gate to Source Threshold Voltage  
Temperature Coefficient  
ID = 250 μA, referenced to 25 °C  
ID = 10 mA, referenced to 25 °C  
Q1  
Q2  
-6  
-5  
mV/°C  
V
V
GS = 10 V, ID = 12 A  
GS = 4.5 V, ID = 10 A  
6.0  
8.5  
8.3  
7.5  
12  
12  
Q1  
Q2  
VGS = 10 V, ID = 12 A , TJ = 125 °C  
rDS(on)  
Drain to Source On Resistance  
mΩ  
VGS = 10 V, ID = 17 A  
VGS = 4.5 V, ID = 14 A  
VGS = 10 V, ID = 17 A , TJ = 125 °C  
3.2  
4.1  
4.1  
4.2  
5.5  
6
VDS = 5 V, ID = 12 A  
Q1  
Q2  
63  
86  
gFS  
Forward Transconductance  
S
V
DS = 5 V, ID = 17 A  
Dynamic Characteristics  
Q1  
Q2  
1315  
2960  
1750  
3940  
Q1:  
Ciss  
Coss  
Crss  
Rg  
Input Capacitance  
pF  
pF  
pF  
Ω
VDS = 15 V, VGS = 0 V, f = 1 MHZ  
Q1  
Q2  
455  
1135  
600  
1510  
Output Capacitance  
Reverse Transfer Capacitance  
Gate Resistance  
Q2:  
VDS = 15 V, VGS = 0 V, f = 1 MHZ  
Q1  
Q2  
45  
100  
70  
150  
Q1  
Q2  
0.9  
0.6  
Switching Characteristics  
Q1  
Q2  
8.6  
13  
18  
23  
td(on)  
tr  
Turn-On Delay Time  
Rise Time  
ns  
ns  
ns  
Q1:  
VDD = 15 V, ID = 12 A,  
Q1  
Q2  
2.5  
4
10  
10  
V
GS = 10 V, RGEN = 6 Ω  
Q1  
Q2  
20  
31  
32  
49  
td(off)  
Turn-Off Delay Time  
Q2:  
V
DD = 15 V, ID = 17 A,  
Q1  
Q2  
2.3  
3.1  
10  
10  
VGS = 10 V, RGEN = 6 Ω  
tf  
Fall Time  
ns  
Q1  
Q2  
20  
43  
28  
60  
Qg  
Total Gate Charge  
VGS = 0 V to 10 V  
Q1  
nC  
nC  
nC  
nC  
VDD = 15 V,  
Q1  
Q2  
9.3  
20  
13  
28  
Qg  
Total Gate Charge  
VGS = 0 V to 4.5 V  
I
D = 12 A  
Q1  
Q2  
4.3  
8.9  
Q2  
VDD = 15 V,  
ID = 17A  
Qgs  
Qgd  
Gate to Source Gate Charge  
Gate to Drain “Miller” Charge  
Q1  
Q2  
2.2  
4.7  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
2
Electrical Characteristics TJ = 25 °C unless otherwise noted  
Symbol  
Parameter  
Test Conditions  
Type  
Min  
Typ  
Max  
Units  
Drain-Source Diode Characteristics  
V
V
GS = 0 V, IS = 12 A  
GS = 0 V, IS = 17 A  
(Note 2) Q1  
(Note 2) Q2  
0.8  
0.8  
1.2  
1.2  
VSD  
trr  
Source to Drain Diode Forward Voltage  
Reverse Recovery Time  
V
Q1  
Q2  
27  
35  
43  
56  
Q1  
ns  
nC  
IF = 12 A, di/dt = 100 A/μs  
Q2  
IF = 17 A, di/dt = 300 A/μs  
Q1  
Q2  
10  
40  
18  
64  
Qrr  
Reverse Recovery Charge  
Notes:  
2
1:  
R
is determined with the device mounted on a 1 in pad 2 oz copper pad on a 1.5 x 1.5 in. board of FR-4 material. R  
is guaranteed by design while R is determined  
θCA  
θJA  
θJC  
by the user's board design.  
b. 56 °C/W when mounted on  
a 1 in pad of 2 oz copper  
a. 60 °C/W when mounted on  
a 1 in pad of 2 oz copper  
2
2
c. 150 °C/W when mounted on a  
minimum pad of 2 oz copper  
d. 140 °C/W when mounted on a  
minimum pad of 2 oz copper  
2: Pulse Test: Pulse Width < 300 μs, Duty cycle < 2.0%.  
3: As an N-ch device, the negative Vgs rating is for low duty cycle pulse ocurrence only. No continuous rating is implied.  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
3
Typical Characteristics (Q1 N-Channel) TJ = 25 °C unless otherwise noted  
40  
30  
20  
10  
0
4
3
2
1
0
VGS = 10 V  
= 6 V  
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
V
GS  
VGS = 4.5 V  
VGS = 4 V  
VGS = 3.5 V  
VGS = 4 V  
VGS = 4.5 V  
VGS = 3.5 V  
0.5  
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
VGS = 6 V  
VGS = 10 V  
0.0  
1.0  
1.5  
2.0  
0
10  
20  
30  
40  
VDS, DRAIN TO SOURCE VOLTAGE (V)  
ID, DRAIN CURRENT (A)  
Figure 1. On Region Characteristics  
F i g u r e 2 . No rma li zed O n-Re si stan ce  
vs Drain Current and Gate Voltage  
40  
1.6  
1.4  
1.2  
1.0  
0.8  
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
ID = 12 A  
VGS = 10 V  
30  
ID = 12 A  
20  
TJ = 125 oC  
10  
TJ = 25 o  
C
0
2
4
6
8
10  
-75 -50 -25  
0
25 50 75 100 125 150  
TJ, JUNCTION TEMPERATURE (oC)  
VGS, GATE TO SOURCE VOLTAGE (V)  
Figure 3. Normalized On Resistance  
vs Junction Temperature  
Figure4. On-Resistance vs Gate to  
Source Voltage  
40  
40  
VGS = 0 V  
PULSE DURATION = 80 μs  
10  
DUTY CYCLE = 0.5% MAX  
30  
20  
10  
0
VDS = 5 V  
1
TJ = 150 o  
C
TJ = 150 o  
C
TJ = 25 oC  
0.1  
TJ = 25 o  
C
0.01  
0.001  
TJ = -55 o  
C
TJ = -55 o  
C
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
0.0  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
VGS, GATE TO SOURCE VOLTAGE (V)  
VSD, BODY DIODE FORWARD VOLTAGE (V)  
Figure 5. Transfer Characteristics  
Figure6. Source to Drain Diode  
Forward Voltage vs Source Current  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
4
Typical Characteristics (Q1 N-Channel) TJ = 25 °C unless otherwise noted  
10  
2000  
1000  
ID = 12 A  
Ciss  
8
VDD = 10 V  
Coss  
6
VDD = 15 V  
100  
4
VDD = 20 V  
2
Crss  
f = 1 MHz  
= 0 V  
V
GS  
0
10  
0.1  
1
10  
30  
0
5
10  
Q , GATE CHARGE (nC)  
15  
20  
VDS, DRAIN TO SOURCE VOLTAGE (V)  
g
Figure 7. Gate Charge Characteristics  
Figure8. C a p a c i t a n c e v s D r a i n  
to Source Voltage  
60  
100  
10  
RθJC = 4 oC/W  
VGS = 10 V  
100us  
1 ms  
40  
20  
0
VGS = 4.5 V  
10 ms  
1
THIS AREA IS  
LIMITED BY r  
100 ms  
DS(on)  
Limited by Package  
SINGLE PULSE  
TJ = MAX RATED  
1s  
0.1  
10s  
DC  
R
θJA = 150 oC/W  
TA = 25 oC  
0.01  
0.01  
25  
50  
75  
100  
125  
150  
0.1  
1
10  
100  
200  
TC, CASE TEMPERATURE (oC)  
VDS, DRAIN to SOURCE VOLTAGE (V)  
Figure 9. Maximum Continuous Drain Current vs  
Case Temperature  
Figure 10. Forward Bias Safe Operating Area  
1000  
100  
10  
SINGLE PULSE  
R
θJA = 150 oC/W  
TA = 25 o  
C
1
0.5  
10-4  
10-3  
10-2  
10-1  
1
10  
100  
1000  
t, PULSE WIDTH (s)  
Figure 11. Single Pulse Maximum Power Dissipation  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
5
Typical Characteristics (Q1 N-Channel) TJ = 25 °C unless otherwise noted  
2
DUTY CYCLE-DESCENDING ORDER  
1
D = 0.5  
0.2  
0.1  
0.05  
0.02  
0.1  
P
DM  
0.01  
t
1
0.01  
t
SINGLE PULSE  
θJA = 150 oC/W  
(Note 1c)  
2
NOTES:  
DUTY FACTOR: D = t /t  
R
1
2
PEAK T = P  
x Z  
x R  
+ T  
J
DM  
θJA  
θJA A  
0.001  
10-4  
10-3  
10-2  
10-1  
t, RECTANGULAR PULSE DURATION (sec)  
1
10  
100  
1000  
Figure 12. Junction-to-Ambient Transient Thermal Response Curve  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
6
Typical Characteristics (Q2 N-Channel) TJ = 25 oC unlenss otherwise noted  
40  
30  
20  
10  
0
6
5
4
3
2
1
0
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
VGS = 10 V  
VGS = 4.5 V  
VGS = 3 V  
VGS = 4 V  
VGS = 3.5 V  
VGS = 3.5 V  
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
VGS = 3 V  
0.2  
VGS = 4 V  
VGS = 10 V  
30 40  
VGS = 4.5 V  
0.0  
0.4  
0.6  
0.8  
0
10  
20  
VDS, DRAIN TO SOURCE VOLTAGE (V)  
ID, DRAIN CURRENT (A)  
Figure 13. On-Region Characteristics  
Figure 14. Normalized on-Resistance vs Drain  
Current and Gate Voltage  
1.6  
20  
ID = 17 A  
GS = 10 V  
PULSE DURATION = 80 μs  
ID = 17 A  
V
DUTY CYCLE = 0.5% MAX  
1.4  
1.2  
1.0  
0.8  
0.6  
15  
10  
TJ = 125 oC  
5
TJ = 25 o  
C
0
-75 -50 -25  
0
25 50 75 100 125 150  
2
4
6
8
10  
TJ, JUNCTION TEMPERATURE (oC)  
VGS, GATE TO SOURCE VOLTAGE (V)  
Figure 16. On-Resistance vs Gate to  
Source Voltage  
Figure 15. Normalized On-Resistance  
vs Junction Temperature  
40  
40  
VGS = 0 V  
PULSE DURATION = 80 μs  
DUTY CYCLE = 0.5% MAX  
10  
VDS = 5 V  
30  
20  
10  
0
TJ = 125 o  
C
TJ = 125 o  
C
1
TJ = 25 oC  
TJ = 25 o  
C
0.1  
0.01  
TJ = -55 o  
C
TJ = -55 o  
C
1.5  
2.0  
2.5  
3.0  
3.5  
0.0  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
VGS, GATE TO SOURCE VOLTAGE (V)  
VSD, BODY DIODE FORWARD VOLTAGE (V)  
Figure 17. Transfer Characteristics  
Figure 18. Source to Drain Diode  
Forward Voltage vs Source Current  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
7
Typical Characteristics (Q2 N-Channel) TJ = 25 oC unless otherwise noted  
10  
5000  
ID = 17A  
8
Ciss  
VDD = 10 V  
1000  
6
Coss  
VDD = 15 V  
4
VDD = 20 V  
2
f = 1 MHz  
100  
60  
V
GS  
= 0 V  
Crss  
10  
VDS, DRAIN TO SOURCE VOLTAGE (V)  
0
0
10  
20  
30  
40  
50  
0.1  
1
30  
Qg, GATE CHARGE (nC)  
Figure 20. Capacitance vs Drain  
to Source Voltage  
Figure 19. Gate Charge Characteristics  
80  
100  
10  
RθJC = 3.5 oC/W  
VGS = 10 V  
60  
40  
20  
0
1 ms  
VGS = 4.5 V  
10 ms  
THIS AREA IS  
1
LIMITED BY r  
DS(on)  
100 ms  
SINGLE PULSE  
TJ = MAX RATED  
RθJA = 140 oC/W  
TA = 25 oC  
1s  
0.1  
10s  
DC  
Limited by package  
50  
0.01  
200  
100  
25  
75  
100  
125  
150  
0.01  
0.1  
1
10  
TC, CASE TEMPERATURE (oC)  
VDS, DRAIN to SOURCE VOLTAGE (V)  
Figure 21. Maximun Continuous Drain  
Current vs Case Temperature  
Figure 22. Forward Bias Safe  
Operating Area  
300  
100  
SINGLE PULSE  
RθJA = 140 oC/W  
TA = 25 oC  
10  
1
0.001  
0.01  
0.1  
1
10  
100  
1000  
t, PULSE WIDTH (sec)  
Figure 23. Single Pulse Maximum Power Dissipation  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
8
Typical Characteristics (Q2 N-Channel) TJ = 25 oC unless otherwise noted  
2
DUTY CYCLE-DESCENDING ORDER  
1
D = 0.5  
0.2  
0.1  
0.05  
0.02  
0.1  
P
DM  
0.01  
t
1
0.01  
t
SINGLE PULSE  
θJA = 140 oC/W  
Note 1d  
2
NOTES:  
DUTY FACTOR: D = t /t  
R
1
2
PEAK T = P  
J
x Z  
x R  
+ T  
DM  
θJA  
θJA A  
0.001  
10-3  
10-2  
10-1  
1
10  
100  
1000  
t, RECTANGULAR PULSE DURATION (sec)  
Figure24. Junction-to-Ambient Transient Thermal Response Curve  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
9
Typical Characteristics (continued)  
TM  
SyncFET Schottky body diode  
Characteristics  
Fairchild’s SyncFETTM process embeds a Schottky diode in  
parallel with PowerTrench MOSFET. This diode exhibits similar  
characteristics to a discrete external Schottky diode in parallel  
Schottky barrier diodes exhibit significant leakage at high tem-  
perature and high reverse voltage. This will increase the power  
in the device.  
with  
a MOSFET. Figure 25 shows the reverse recovery  
characteristic of the FDML7610S.  
10000  
20  
15  
TJ = 125 o  
C
1000  
100  
10  
di/dt = 300 A/μs  
TJ = 100 o  
C
10  
5
0
TJ = 25 o  
C
1
-5  
0
5
10  
15  
20  
25  
30  
0
50  
100  
TIME (ns)  
150  
200  
250  
VDS, REVERSE VOLTAGE (V)  
Figure 26. SyncFETTM body diode reverse  
leakage versus drain-source voltage  
Figure 25. FDML7610S SyncFETTM body  
diode reverse recovery characteristic  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
10  
Application Information  
1. Switch Node Ringing Suppression  
Fairchild’s Power Stage products incorporate a proprietary design* that minimizes the peak overshoot, ringing voltage on the switch  
node (PHASE) without the need of any external snubbing components in a buck converter. As shown in the figure 29, the Power Stage  
solution rings significantly less than competitor solutions under the same set of test conditions.  
Power Stage Device  
Competitors solution  
Figure 29. Power Stage phase node rising edge, High Side Turn on  
*Patent Pending  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
11  
Figure 30. Shows the Power Stage in a buck converter topology  
2. Recommended PCB Layout Guidelines  
As a PCB designer, it is necessary to address critical issues in layout to minimize losses and optimize the performance of the power  
train. Power Stage is a high power density solution and all high current flow paths, such as VIN (D1), PHASE (S1/D2) and GND (S2),  
should be short and wide for better and stable current flow, heat radiation and system performance. A recommended layout proce-  
dure is discussed below to maximize the electrical and thermal performance of the part.  
Figure 31. Recommended PCB Layout  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
12  
Following is a guideline, not a requirement which the PCB designer should consider:  
1. Input ceramic bypass capacitors C1 and C2 must be placed close to the D1 and S2 pins of Power Stage to help reduce parasitic  
inductance and high frequency conduction loss induced by switching operation. C1 and C2 show the bypass capacitors placed close  
to the part between D1 and S2. Input capacitors should be connected in parallel close to the part. Multiple input caps can be connected  
depending upon the application.  
2. The PHASE copper trace serves two purposes; In addition to being the current path from the Power Stage package to the output  
inductor (L), it also serves as heat sink for the lower FET in the Power Stage package. The trace should be short and wide enough to  
present a low resistance path for the high current flow between the Power Stage and the inductor. This is done to minimize conduction  
losses and limit temperature rise. Please note that the PHASE node is a high voltage and high frequency switching node with high  
noise potential. Care should be taken to minimize coupling to adjacent traces. The reference layout in figure 31 shows a good balance  
between the thermal and electrical performance of Power Stage.  
3. Output inductor location should be as close as possible to the Power Stage device for lower power loss due to copper trace  
resistance. A shorter and wider PHASE trace to the inductor reduces the conduction loss. Preferably the Power Stage should be  
directly in line (as shown in figure 31) with the inductor for space savings and compactness.  
4. The PowerTrench® Technology MOSFETs used in the Power Stage are effective at minimizing phase node ringing. It allows the  
part to operate well within the breakdown voltage limits. This eliminates the need to have an external snubber circuit in most cases. If  
the designer chooses to use an RC snubber, it should be placed close to the part between the PHASE pad and S2 pins to dampen  
the high-frequency ringing.  
5. The driver IC should be placed close to the Power Stage part with the shortest possible paths for the High Side gate and Low Side  
gates through a wide trace connection. This eliminates the effect of parasitic inductance and resistance between the driver and the  
MOSFET and turns the devices on and off as efficiently as possible. At higher-frequency operation this impedance can limit the gate  
current trying to charge the MOSFET input capacitance. This will result in slower rise and fall times and additional switching losses.  
Power Stage has both the gate pins on the same side of the package which allows for back mounting of the driver IC to the board. This  
provides a very compact path for the drive signals and improves efficiency of the part.  
6. S2 pins should be connected to the GND plane with multiple vias for a low impedance grounding. Poor grounding can create a noise  
transient offset voltage level between S2 and driver ground. This could lead to faulty operation of the gate driver and MOSFET.  
7. Use multiple vias on each copper area to interconnect top, inner and bottom layers to help smooth current flow and heat conduction.  
Vias should be relatively large, around 8 mils to 10 mils, and of reasonable inductance. Critical high frequency components such as  
ceramic bypass caps should be located close to the part and on the same side of the PCB. If not feasible, they should be connected  
from the backside via a network of low inductance vias.  
©2013 Fairchild Semiconductor Corporation  
FDML7610S Rev.C1  
www.fairchildsemi.com  
13  
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