Datasheet

2
1
3
4
7
8
6
5
FB
NC
GND
OUT
EN
NR/SS
DNC
IN
TPS7A49xx
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SBVS121B AUGUST 2010REVISED JANUARY 2010
PIN CONFIGURATION
DGN PACKAGE
MSOP-8
(TOP VIEW)
PIN DESCRIPTIONS
TPS7A49xx
NAME NO. DESCRIPTION
OUT 1 Regulator output. A capacitor 2.2mF must be tied from this pin to ground to assure stability.
FB 2 This pin is the input to the control-loop error amplifier. It is used to set the output voltage of the device.
NC 3 Not internally connected. This pin may either be left open or tied to GND.
GND 4 Ground
This pin turns the regulator on or off. If V
EN
V
EN_HI
, the regulator is enabled.
EN 5
If V
EN_LO
V
EN
, the regulator is disabled. The EN pin can be connected to IN, if not used. V
EN
V
IN
.
Noise reduction pin. Connecting an external capacitor to this pin bypasses noise generated by the internal bandgap.
NR/SS 6
This capacitor allows RMS noise to be reduced to very low levels and also controls the soft-start function.
DNC 7 DO NOT CONNECT. Do not route this pin to any electrical net, not even GND or IN.
IN 8 Input supply
PowerPAD Must either be left open or tied to ground. Solder to printed circuit board (PCB) plane to enhance thermal performance.
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