What is the absolute current supply that a CC2538 need?

Serdar Köse

Other Parts Discussed in Thread: CC2538, CC3200

Could anyone tell me what is the maximum DC current that a CC2538?

The most relative info that I can see on swrs096b is the table 5.4 (electrical characteristics), but it shows the rating for the CPU's idle state. According to that table, is 70 mA supply (at 3.3V) secure enough for any operation?

over 10 years ago

0 YiKai Chen over 10 years ago

Guru 735685 points

I don't see it has 70 mA consuming in table5.4 of swrs096b.

0 Serdar Köse over 10 years ago in reply to YiKai Chen

Genius 3360 points

CC3200's datasheet has information that one should use a power supply that is able to supply for 400 mA (for synch operation). I have been searching similar information for CC2538 which I could not see any clear info. What is the maximum current that a CC2538 need?

0 YiKai Chen over 10 years ago in reply to Serdar Köse

Guru 735685 points

It should be

32-MHz XOSC running, radio in TX mode, 7-dBm output power, no peripherals active, CPU idle --->34 mA

0 Serdar Köse over 10 years ago in reply to YiKai Chen

Genius 3360 points

I am trying to find out the power consumption for "32-MHz XOSC running, radio in TX mode, 7-dBm output power, all possible peripherals active, CPU is not idle"

According to that table, I sum about 60 mA or so if peripherals are active and flash w/r occurs. Is 70 mA a safe current rating or should I go for a higher current rate?

0 YiKai Chen over 10 years ago in reply to Serdar Köse

Guru 735685 points

It is suppose to be good.

0 S over 10 years ago in reply to Serdar Köse

TI__Mastermind 35795 points

Serdar, Please consult Power consumption measurement app note for cc2538 end device: www.ti.com/.../swra456.pdf

Saurabh

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What is the absolute current supply that a CC2538 need?