AT73C237 Atmel, AT73C237 Datasheet - Page 21

• Manufacturer Part Number: AT73C237
• Description: IC POWER MANAGEMENT UNIT 16QFN
• Manufacturer: Atmel

Specifications of AT73C237

• Applications: Wireless
• Current - Supply: 250µA
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.3
6362A–PMAAC–01-Jul-08
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.
Figure 9-3.
• Additionally, 1.50V or 1.20V output voltages programming is possible via the TWI serial
interface on AT73C237.
VDD
LDO3 Functional Diagram
AV
V
on3
ESD
BG
SS
V
INC
reference
overcurrent
current
detection
GNDA
V
DD3
sel3<1:0>
vouts
V
IN
V
AT73C237
GNDA
O3
C
3
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