AM3351: GPIO to drive LDO

Part Number: AM3351

Team,

We are using OSD3358-512M-ICB, which integrates the AM335x Sitara™ Processor. I could not find the GPIO source/sink current specifications in the datasheet. Is there another document or application note that provides these details?

We are using the GPMC_A10 GPIO to drive the LDO enable pin.

AM335x Sitara™ Processors datasheet (Rev. L)

6 days ago

0 peaves 6 days ago

TI__Guru 64625 points

The AM335x outputs were not designed to support continuous drive of large steady-state current. They were designed to drive CMOS inputs which only requires a transient current to change the signal logic state and potentially a small steady-state current to hold a logic state by over-driving weak pull resistors.

The datasheet publishes VOH and VOL parameters for the LVCMOS buffer type in the Electrical Characteristics section. These parameters represent the device output voltage for a specific drive current. This single data point is all we provide. You would need to use the information provided in the IBIS file to simulation output voltage for any other current.

Regards,
Paul

0 Kallikuppa Sreenivasa 1 hour ago in reply to peaves

TI__Guru**** 225715 points

Hello MK,

A follow-up query was answered in the below thread.

(+) AM3358: GPMC_A10_ can drive Enable pin of TPS758A01KTTR - Power management forum - Power management - TI E2E support forums

Regards,

Sreenivasa

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AM3351: GPIO to drive LDO