SE868SY-D Hardware Design Guide
1VV0301705 Rev. 5
Page 15 of 44
2021-12-15
Not Subject to NDA
4.
POWER SUPPLY
The power supply circuitry and board layout are critical components of the overall
product design, and they strongly reflect the product's overall performance. For a proper
design, please read the requirements and guidelines carefully.
Power Supply Requirements
The external power supply must be connected to VDD18 pins, and it must fulfill the
following requirements:
Power Supply
Value
Notes
Nominal Supply Voltage
1.8 V
On Pin 25, 27 and 32 in Standard P/N
On Pin 25 and 32 in Low Power P/N
0.8 V
On Pin 27, ONLY in Low Power P/N
Operating Voltage Range
1.71 ÷ 1.89 V
On Pin 25, 27 and 32 in Standard P/N
On Pin 25 and 32 in Low Power P/N
0.75 ÷ 0.85 V
On Pin 27, ONLY in Low Power P/N
Table 8: Power Supply Requirements
Note: The Operating Voltage Range MUST never be exceeded at any
time. This also applies to overshoots above the maximum allowed
voltage and drops below the minimum.
Power Consumption
Standard
P/N
GPS
L1
only
GPS
L1+L5
GPS, GLO, GAL, QZSS, L1+L5
Acquisition
(avg)
53
mW
61
mW
60 mW
Acquisition
(max)
57
mW
65
mW
71 mW
Tracking
(avg)
25
mW
36
mW
47 mW
Idle (avg)
10 mW
Deep
Sleep
70
µ
W
Table 9: Power Consumption in Standard P/N