• LM3880: LM3880 power sequence

  

  Frank Xiao

  TI Thinks Resolved

  Part Number: LM3880 Hi team, My customer is evaluating the LM3880 now, for LM3880, if we turn off VCC first, what will happen about flag 1,2,3? Thanks.

  • over 8 years ago
  • Power management
  • Power management forum
Answered

• LM3880: LM3880 Quiescent Current

  

  Glenn Garbeil12

  Resolved

  Part Number: LM3880 The LM3880 datasheet specs a quiescent current of 25uA. It does not specify the condition in which this is measured. Is this with the EN pin high or low? I hope the quiescent current should be single digits or lower in the uA range…

  • Resolved

  • over 8 years ago
  • Power management
  • Power management forum
Answered

• RE: LM3880: I have a concern with EN pin LMZ12401H by using LM3880

  

  Vincent David

  Resolved

  Hello Brad you are right with V in 12V I have 6 V V out and EN = 6 V so that destroy the LM3880 Monday I will received the transistor to make a trial with th eTI provided circuit Regards David

  • over 7 years ago
  • Power management
  • Power management forum

• RE: WEBENCH® Tools: LM3880 and LM3881

  

  yihe

  Hi Here is the PSpice model for LM3880 http://www.ti.com/lit/zip/snvmbb4 Does it help? Regards Yihe

  • over 5 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

• RE: LM3880: Push Pull Outputs version?

  

  yihe

  Hi We do not have something P2P with LM3880 offering push pull output. For the LM3880, the minimum is 1.0V and the max is VCC + 0.3 For the UCD9090-Q1, EN is a CMOS signal, the minimum is VCC - 0.6V, the max is 3.6V For 1us glitch, it will be…

  • over 5 years ago
  • Power management
  • Power management forum
Answered

• LM3880: Questions about using the LTM3808

  

  user6236094

  Resolved

  Part Number: LM3880 Other Parts Discussed in Thread: SN74LV244A , , TPS3808 Please tell me the following points about how to use LTM3808. 【Question 1】 ・Figure 12 in the data sheet shows a circuit example using MOSFETs. 　 Is it possible to directly…

  • Resolved

  • over 5 years ago
  • Power management
  • Power management forum

• LM3880-Q1: LM3880-Q1 Cascading circuit

  

  Toshio Ushikubo

  TI Thinks Resolved

  Part Number: LM3880-Q1 Other Parts Discussed in Thread: LM3880 , Hello, Please answer following request from customer. Following Applications Journal Figure 4 explains the example of LM3880 cascading circuit. http://www.ti.com/lit/an…

  • over 8 years ago
  • Power management
  • Power management forum
Answered

• LM3880: Disable flag 3 of LM3880

  

  ongcharoenret

  Resolved

  Part Number: LM3880 My customer looking at LM3880QMFE-1AA/NOPB Power-Up and Power-Down sequence is 1-2-3, 3-2-1 and the delay between all the flags is 10mS. They need to use only Flag 1 and Flag 2, possible to disable Flag 3? Thanks Plongchar…

  • Resolved

  • over 8 years ago
  • Power management
  • Power management forum

• LM3880: Pulling LM3880 flag outputs to EN pin to reduce off current

  

  Glenn Garbeil12

  TI Thinks Resolved

  Part Number: LM3880 Can the LM3880 flag outputs be pulled to the EN pin to reduce current consumption through the pullups when it is off? The use case is the LM3880 stays powered on continuously and a uC drives the EN pin to control power to a subsystem…

  • over 8 years ago
  • Power management
  • Power management forum
Answered

• LM3880-Q1: About the EN and power down sequence of LM3880-Q1

  

  Noritomo Harukawa

  Resolved

  Part Number: LM3880-Q1 Other Parts Discussed in Thread: LM3880 I would like to confirm the power down sequence of the LM3880-Q1. It is described on page 11(7.3.2 Incomplete Sequence Operation) of the LM3880-Q1 datasheet as follows. --------------…

  • Resolved

  • over 8 years ago
  • Power management
  • Power management forum

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