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Evaluation Kit for ZSPM4121 Undervoltage Load Switch with Threshold Voltage set to 3.0V


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ZSPM4121W30KIT   Datasheet
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Product Overview

The ZSPM4121W30KIT is an evaluation kit for ZSPM4121 under voltage load switch. The ZSPM4121 is a battery management load switch can be used to protect a battery from excessive discharge. It actively switches the battery power source off if it drops to a set threshold (off mode). When the input battery voltage is above the threshold, the load switch is on (on mode). The ZSPM4121 threshold voltage (VTHRESH) is programmed at manufacturing to a set point in the range of 1.2V to 4.2V with 100mV steps between options. This evaluation kit is a compact system intended to facilitate measuring the performance and operating characteristics of the ZSPM4121 under voltage load switch. The board contains a number of test points to allow evaluating the functions of the ZSPM4121. It also has a solid ground plane.
  • 3.0V threshold voltage
  • Power source is actively switched off when VCC drops below a set threshold
  • Wide input voltage range from 1.2V to 5.5V
  • Supervisory over current limit shutdown
  • Low dropout disconnect from VCC to loads
  • Controlled turn on slew rate
  • 500mV off mode to on mode hysteresis
  • Over current shutdown (3A)
  • Ultra low quiescent current in on mode of 70nA (typical)
  • Accurate on/off voltage threshold


Portable Devices, Industrial, Medical, Consumer Electronics, RF Communications, Wireless, Power Management


ZSPM4121 evaluation board, Kit documentation.


This evaluation kit is designed for evaluation of the ZSPM4121, laboratory setup and module development only and it must not be used for module production and production test setups.

Product Information

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Power Management - Battery

Load Switch

Evaluation Board ZSPM4121

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Technical Documents (1)

CAD Downloads


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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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