AT73C237 Atmel, AT73C237 Datasheet - Page 20

• 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

9.2
20
LDO2
AT73C237
LDO2 is a 1.80V/70mA LDO, compatible with RF performances. LDO2 can work with supply
from 3.0V up to 5.5V and needs at least 300 mV of minimum drop-out. This LDO is designed to
supply RF section of wireless devices, showing high PSRR up to 100kHz, very low noise on
wide frequency bandwidth. LDO2 requires a 2.2 µF output capacitor.
Figure 9-2.
• Additionally, 1.50V output voltages programming is possible via the TWI serial interface.
VDD
LDO2 Functional Diagram
AV
V
on2
ESD
BG
SS
reference
overcurrent
detection
current
GNDA
V
DD2
vouts
sel2
V
IN
V
GNDA
6362A–PMAAC–01-Jul-08
O2
C
2