ATR0635 Datasheet, PDF (24/33 Pages) ATMEL Corporation – ANTARIS4 Single-chip GPS Receiver SuperSense

Figure 4-4. Connecting Example: Power Supply from USB Using the Internal LDOs
ATR0635 internal
NSHDN
VCC1
VCC2
VBP
VDIG
LDO_IN
LDO_EN
LDO_OUT
RF
ldoin
ldoen
ldoout
LDO18
External LDO
USB-VSB 5V _{3.0V to 3.3V}
1 µF
(X7R)
VDD18
VDDIO
LDOBAT_IN
1.5V to 3.6V
VBAT
1 µF
(X7R)
VBAT18
VDDUSB
Core
1.8V to 3.3V
variable I/O domain
ldobat_in
vbat
vbat18
LDOBAT
VDD
RTC
backup memory
USB SM and
transceiver
24 ATR0635
4928C–GPS–06/06