Technical Specifications; Power Supply - Sierra Wireless AirPrime SL808 Series Product Technical Specification & Customer Design Manuallines

3: Technical Specifications

Table 3-1: Power and ground specifications
Signal / Pin Pins
Name
a
VCC_3V6 42, 44
VREF_1V8 10
GND 19, 20, 21, 23,
28, 39, 35, 37,
38, 39, 52
a. Host-provided input voltage should provide 3 A instantaneous (lasting 5 ms) and 1.5 A continuous current, while staying
within specified min/max range.
Table 3-2: Power supply requirements
Requirement type

Power supply

Voltage range (V
Current (instantaneous (≤5 ms)) 3 A
Current (continuous)
Power input capacitor(s)
a. Maximum current is for HSDPA mode; other modes will have lower continuous current. Average
Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change
3.1 Power supply
Power is provided to the SL808X through power and ground pins as
detailed in Table
Type Specification
V Voltage range
Ripple voltage
(U )
ripp
V Maximum supply
current = 1 mA
V
The host device must provide power to the AirPrime soldered-down
module over pins 42 and 44 (VCC_3V6) as detailed in
Value
3.6 V (nominal)
–V ) 3.3–4.3 V
min max
700 mA
•
•
•
value depends on usage model, antenna design, PCB layout, etc.
Note: The host must provide safe and continuous power to the module; the
module does NOT have protection circuits to guard against electrical
overstress.
3-1.
Parameter Min
VCC 3.30
1.62
-
a
(maximum)
Add capacitance to host power rail (≥ 100 µF) to keep
module operational with V in range.
in
Additional capacitance may be required if the host cannot
meet the module's current requirements.
Conditioning capacitor (1 µF, 0.1 µF, 10 nF and 1 nF)
recommended close to the power input for decoupling.
Typ Max Units
3.60 4.30 Va
100 mV
pp
1.80 1.98 V
0 - V
Table 3-2.
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