Part Number: LM3881 Hello team,
The datasheet states that
"Considering the TADJ voltage threshold levels and the charge/discharge current magnitude, it can be shown that the timing capacitor-clock period relationship is typically 120 µs/nF ."
…
Part Number: LM3881 The recommended behavior is to assert EN after powering the VCC. I'd like to confirm that if EN rise up to 0.55V without powering VCC, is there any problem?
Thanks.
Part Number: LM3881 Hi,
We input 5.5V as both VIN and pull up voltage level at flag output for LM3881.
and we found the flag output will drop gradually after power up few minutes.
It will be normal again after power cycle.
The absolutly maximum…
Part Number: LM3881 Hello, I'm just working on a board redesgin for which I need a simple sequence to ramp up/down microprocessor power rails. The requirement is that the delay time of the sequence has to be only a few hunderd micro-seconds (best case…
Part Number: LM3881 Hi, team
Please tell me about the variation of TCLK. LM3881 can adjust TCLK by external capacitor CADJ. I think TCLK is affected by VHTH, VLTH, ITADJ_SRC, ITADJ_SINK as well as CADJ. ITADJ_SRC and ITADJ_SINK are equivalent including…
Part Number: LM3881 Hi Team，
My customer tested that when EN is pulled low, the low voltage level of Flag3 is 390mV. This is within the range of SPEC, but the customer wants to know why the low voltage level is as high as 300+mV, and how to reduce it…
Part Number: LM3881 Other Parts Discussed in Thread: LM3880 , Are there any plans to create a PSPICE for TI model for the LM3881? I would like to use this in my new design instead of the LM3880.
Thanks, Vernon
Part Number: LM3881 Hi TI,
According to LM3881 data sheet, Cadj of 10nF will make delay between FLAG2 and FLAG1 to be about 10ms.
What's the max delay can be set?
If I put Cadj as 20nF, does it mean that the delay becomes ~ 20ms?
Thanks.
Part Number: LM3881
The minimum capacitance value for Cadj is 200pF and the maximum is 2uF.
For more LM388x FAQ click or type the tag in the search bar [FAQ] LM388x .
Part Number: LM3881 Hi There,
We are considering the adoption of "LM3881MME/NOPB".
The reference circuit is pulled up with 100kΩ. (Figure 18. Typical Application Circuit)
There is no description of the output current(IOL) for the FLAG*. Is it possible…
