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FDMS8680 Datasheet(PDF) 19 Page - Texas Instruments

Part # FDMS8680
Description  HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY
PDF  27 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

FDMS8680 Datasheet(HTML) 19 Page - Texas Instruments

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1
2
3
4
10
9
8
7
VBST
DRVH
SW
V5IN
PGOOD
TRIP
EN
VFB
U1
TPS51218
5
6
DRVL
RF
GND
C2
1 mF
C1
0.1 mF
C4
330 mF x 4
C3
10 mF x 4
L1
0.45 mH
R6
100 kW
R3
1 kW
R1
5.6 kW
V
IN
8 V
to
20 V
V
OUT
1.1 V
18 A
V
OUT_GND
EN
V5IN
4.5 V
to
6.5 V
R5
30 kW
R2
10 kW
UDG-09068
R4(A)
470 kW
Q2
FDMS8670AS
Q1
FDMS8680
Q3
FDMS8670AS
R7
3.3 W
1
2
3
4
10
9
8
7
VBST
DRVH
SW
V5IN
PGOOD
TRIP
EN
VFB
U1
TPS51218
5
6
DRVL
RF
GND
C2
1 mF
C1
0.1 mF
C4
330 mF x 4
C3
10 mF x 4
L1
0.45 mH
R6
100 kW
R3
1 kW
R1
5.6 kW
V
IN
8 V
to
20 V
V
OUT
1.1 V
18 A
V
OUT_GND
EN
V5IN
4.5 V
to
6.5 V
R5
30 kW
R2
10 kW
UDG-09069
Q2
FDMS8670AS
Q1
FDMS8680
Q3
FDMS8670AS
R4(A)
470 kW
R7
3.3 W
TPS51218
www.ti.com
SLUS935B
– MAY 2009 – REVISED FEBRUARY 2012
TPS51218 APPLICATION CIRCUITS
Figure 21. 1.1-V/18-A Auto-Skip Mode
A.
See Table 1 for resistor/frequency values.
Figure 22. 1.1-V/18-A Forced Continuous Conduction Mode
Copyright
© 2009–2012, Texas Instruments Incorporated
Submit Documentation Feedback
19
Product Folder Link(s): TPS51218



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