Part Number: LM3881 Dear All, I have a need to use the LM3881 in either a power up or power down sequencing application. Specifically, I wish to use the output flags from the LM3881 to either enable and disable a pre-established supply voltage. Is there…
Part Number: LM3881 Hi Team,
Please see the schematic below for LM3881.
The Flag pin voltage has abnormal power down wave as below. The voltage drop from 5V to 2.7V and then keep a while. After it will continue drop from 2.7V to about 750mV. The phenomena…
Part Number: LM3881 Other Parts Discussed in Thread: TINA-TI , , LM3880
Hi Team,
Just want to ask if there is LM3881 simplis or PSpice or Tina-TI model ? It's better to have no encryption version if there is. Thanks.
BRs
Given
Part Number: LM3881 Is there an equivalent glitch free operation on the EN pin for the power-down sequence? Or in other words, what happens if EN glitches low momentarily after a successful power-up sequence?
Part Number: LM3881 HI SIR
I use the LM3881 to control the sequence
green is the power, when the power ramp down, we can see the flag1,2,3 happen the glitch
it's right?
thanks
Part Number: LM3881 HI sir
During the power up/down sequence, when the vcc lost, may i know what happen in below state?
1. How will the waveforms of FLAG1, FLAG2 and FLAG3 change when VCC is suddenly powered off?
2. When FLAG1 is already HIGH just…
Part Number: LM3881 Hi team,
A customer of mine had the following question regarding LM3881.
We have a number of power supplies with VIN at 5V. Their active high enables are connected to the flag outputs of a LM3881. The flag outputs are open drain so…
Part Number: LM3881 Other Parts Discussed in Thread: LM3880 Hello
From Fig. 15, the same voltage is applied to the power supply and enable. Does the power-down sequence work as shown in Fig. 11 even if the power is turned off at this time?
I am concerned…
Part Number: LM3881 HI sir
During the power up/down sequence, when the vcc lost, may i know what happen in below state?
1. How will the waveforms of FLAG1, FLAG2 and FLAG3 change when VCC is suddenly powered off?
2. When FLAG1 is already HIGH just after…