User's Manual

Document name: ICC-1 connectivity module Revision: 0.7

FCC ID: FHO-ICC-1 Revision date: 2016-07-05

IC ID: 10912A-ICC1

3 Power supply for ICC-1

3.1 Regulated power supply

ICC-1 can be supplied from a regulated power supply down to 1.85V in all conditions.

During peak load transients, power supply can be up to 145mA when using high power

mode. The product designer shall verify unconditional stability during peak load to

secure that voltage is not dropping below 1.85V.

The actual design of the regulator affects the decoupling capacity. Make sure that no

noise is injected via the power supply that impacts the analogue parts or the radio

supply.

3.2 Coin cell battery operation

ICC-1 can be operated from a single 3.0V coin cell battery. A minimum of sustaining

1.85V during all peak transients until battery end of life is required to guarantee proper

operation.

Make sure to fulfil the below requirements:

• Add enough decoupling to the device to avoid brown out during transient load in

TX burst. 20uF < 200uF.

• Limit output power to minimize peak power load.

• Schedule power consuming tasks to prevent tasks running parallel to minimize

peak load.

• Minimize over the air communication (OTA), time to perform tasks (like pairing),

fast poll, etc.

• Do not power the module via DCDC or other sources that have poor efficiency at

light loads.