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AT73C237 Datasheet(PDF) 21 Page - ATMEL Corporation

Part # AT73C237
Description  Power Management and Analog Companions (PMAAC)
PDF  33 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT73C237 Datasheet(HTML) 21 Page - ATMEL Corporation

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21
6362A–PMAAC–01-Jul-08
AT73C237
9.3
LDO3
LDO3 is a 1.80V/70mA LDO, compatible with RF performances (see electrical specifications for
details). LDO3 can work with supply from 3.0V up to 5.5V and needs at least 300mV of minimum
drop-out. This LDO is designed to supply RF section of wireless devices, showing high PSRR up
to 100 kHz, low noise on wide frequency bandwidth. LDO3 requires a 2.2 µF output capacitor.
• Additionally, 1.50V or 1.20V output voltages programming is possible via the TWI serial
interface on AT73C237.
Figure 9-3.
LDO3 Functional Diagram
VO3
VIN
VDD3
C3
VBG
AVSS
on3
overcurrent
detection
current
reference
sel3<1:0>
GNDA
GNDA
VDDESD
vouts
VINC



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