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  • TPS61221: What is the maximum output current

    TI Thinks Resolved
    Part Number: TPS61221 Other Parts Discussed in Thread: TPS61099 , TPS61021A I am a bit confused regarding the output current capabilities of the TPS61221 boost converter. Although it could be said that it is related to all similar boost converters. Is…

  • TPS61221: Boost Converter or direct connection?

    TI Thinks Resolved
    Part Number: TPS61221 Other Parts Discussed in Thread: TPS61291 Hello, I have a device with input voltage from 1.8 to 3.3 V and my question is: What is best battery non-recharable power supply for this device? Three options are available: 1) Use one…
    • Answered

  • TPS61221: Vout not equal to Vin when EN pin is pulled to ground. Also, Vout ~2.8V instead of 3.3v even when EN is pulled high and load ~100mA

    Resolved
    Part Number: TPS61221 Other Parts Discussed in Thread: TPS61020 , TPS62730 , TPS61097A-33 , TPS61291 , TPS61201 Hi, Need your help. While designing a low-power circuit for driving an at328p mc and a couple of sensors attached off a 14505 LiSoCl 3.7v battery…
    • Resolved
    • Answered

  • TPS61221: Problem, sometimes the device doesn't start and the output voltage is ~1.5V

    Resolved
    Part Number: TPS61221 Hi everyone, I have a (typical) circuit with TPS61221, 3V coin cell battery as input and a slide switch in series as you can see below in the schematic. The load current is 1~20mA in normal operation. I have noticed that sometimes…
    • Resolved

  • TPS61221: TPS 61221/61220 or TPS61031 does not have the efficiency. It has at least 6mA current drawn while not connecting to any load.

    Part Number: TPS61221 Hi there, I m designing a boost converter using either TPS 61221 or TPS 61031. I have two layouts for these two converters using the standard layout provided by the datasheet. Both of the modules are able to output 3.3V as the design…

  • TPS61221: with 3.8V battery and with no load circuit is drwaing 12uA current

    Part Number: TPS61221 Hi, I have designed circuit based on TPS61221. with 3.3 v fixed out, Inductor 4.7uH, Cap is 10uF ceramic Samsung, Still found it draws 12 to 15uAmps without load, and after applying load it adds to the load. kindly help me with the…

  • TPS61221 / Battery decreasing voltage

    Other Parts Discussed in Thread: TPS61221 Hi, The problem is occurred on my customer's circuit. The problem is what large current flows when inserting the battery decreasing voltage. The occurrence frequency is several percent. I attach waveform below…

  • TPS61222: Using TPS61222 & TPS61221 parallely from a single Coin Cell (CR2032) draining the cell in less than 30 seconds even in no load condition

    Part Number: TPS61222 Other Parts Discussed in Thread: TPS61221 I am making a small device which require both 3.3V as well as 5V output from a single 3V coin cell (CR2032). Therefore using TPS61222 for 5V and TPS 61221 for 3.3V in parallel from a single…

  • TLV61225 efficiency trouble at light load. Is TPS61221 a better choice?

    Other Parts Discussed in Thread: TLV61225 , TPS61221 , TPS61098 I've got a product powered by a single AA battery that mostly draws something on the order of a dozen µA or so most of the time but has 35 ms load pulses of 5 mA. I've been using the…

  • TPS61221 Output Voltage Range with 3V to 3.5V Input.

    Other Parts Discussed in Thread: TPS61221 What is the output voltage range of the TPS61221 under the following conditions and will the operating mode (current sourced from output rectifier vs. output MOSFET) change over this input voltage range? Conditions…

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