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FAN1655MTFX(2004) View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
FAN1655MTFX
(Rev.:2004)
Fairchild
Fairchild Semiconductor Fairchild
FAN1655MTFX Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
PRODUCT SPECIFICATION
FAN1655
Pin Assignments
VDD 1
VDD 2
VTTFORCE 3
VSS 4
VSS 5
VTTFORCE 6
VDD 7
VSS 8
16 NC
15 VDDQ
14 VREFOUT
FAN1655 13 VSSQ
12 SHDN
11 VREFIN
10 VTTSENSE
9 NC
VDD 1
VDD 2
VTTFORCE 3
VSS 4
VSS 5
VTTFORCE 6
VDD 7
14 VDDQ
13 VREFOUT
12 VSSQ
FAN1655M 11 SHDN
10 VREFIN
9 VTTSENSE
8 VSS
VDD 1
VTTFORCE 2
VTTFORCE 3
VDD 4
8 VDDQ
7 VREFOUT
6 SHDN
5 VTTSENSE
16-Lead Plastic eTSSOP-16
θJC = 4˚C/W*
*Thermal impedance is measured with the
power pad soldered to a 0.5 square inch
copper area. The copper area should be
connected to Vss (ground) and positioned
over an internal power or ground plane to
assist in heat dissipation.
14-Lead Plastic SOIC
θJC = 37˚C/W, θJA = 88˚C/W
GND
8-Lead MLP Package (5x6mm)
θJC = 4˚C/W, θJA = 34˚C/W as
measured on FAN1655MP
Eval Board
Pin Definitions
MLP
1, 4
2, 3
PAD
5
Pin
eTSSOP
1, 2, 7
3, 6
4, 5, 8
10
11
6
12
13
7
14
8
15
9, 16
PAD
PAD
SOIC-14
1, 2, 7
3, 6
4, 5, 8
9
10
11
12
13
14
Pin Name
VDD
VTTFORCE
VSS
VTTSENSE
VREFIN
SHDN
VSSQ
VREFOUT
VDDQ
NC
Pin Function Description
Input power for the LDO.
The VTT output voltage.
IC Ground.
Feedback for remote sense of the VTT voltage.
Alternative input for direct control of VTTOUT and
VREFOUT.
Shutdown. This active low shutdown turns off both VTT
and VREFOUT. This pin has an internal pull-down, and
must be externally driven high for the IC to be on.
Signal Ground.
Buffered Voltage Reference Output.
VDDQ Input. Attach this pin to the VDDQ supply to
generate VTT and VREFOUT.
No Internal Connection
Connect PAD to Vss Ground Plane
Typical Application
VDD
GND
100µF
6V
10µF
1
16
2
15
3
14
4 FAN1655 13
5
12
6
11
7
10
8
9
VDDQ
470µF
10k
VTTFORCE
10µF
VREFOUT
1nF
SHDN
VTTSENSE
(connect to VTTFORCE
1nF
at the load)
GND
Figure 1. (eTSSOP pinout shown)
2
REV. 1.1.4 3/24/04
 

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