SC250 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC250' PDF : 18 Pages View PDF
SC250
POWER MANAGEMENT
Pin Descriptions
PRELIMINARY
Pin #
1
2
3
4
5
6
7
8
Pin Name
LX
VIN
VREF
GND
VDAC
VOUT
EN
PGND
Pin Function
Inductor connection to the switching FETs
Input voltage connection
2.85V, 20mA reference supply — can be used as a supply for power amplifier bias inputs or
to supply a resistive divider on VDAC to set a fixed level of VOUT.
Ground connection
Analog control voltage input ranges between 0.1 and 1.2V for control of VOUT in accordance
with the VOUT= 3 x VDAC transfer function. VDAC > 1.4V enables pass-through mode using
the internal pass MOSFET.
Regulated output voltage and feedback
Enable digital input: a high input enables the SC250, a low disables the output and
reduces quiescent current to less than 1μA and LX becomes high impedance.
Ground reference for internal N-channel MOSFET
© 2006 Semtech Corp.
7
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