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ZSPM4011 1 Amp DC-DC Buck Converter IC

The ZSPM4011 is a DC-DC converter with fully integrated power switches, internal compensation, and full fault protection. The switching frequency of 1 MHz enables the use of small filter components, resulting in reduced board space and reduced BOM costs.

The ZSPM4011 utilizes current mode feedback in normal regulation PWM mode. When the regulator is disabled (EN is low), the device draws less than 10 uA quiescent current.

A wide range of protection circuitry is included: input supply under-voltage lockout, output voltage soft start, current limit, and thermal shutdown.

Supervisory reporting through the power good open drain output interfaces to other components in the system.



  • Increased battery life
  • Minimal external component count (3 capacitors, 1 inductor)
  • Inherent fault protection and reporting


  • Fixed output voltages: 1.5V, 1.8V, 2.5V, 3.3V and 5V with ±2% output tolerance
  • Adjustable version output voltage range: 0.9V to 5V with ±1.5% reference
  • Wide input voltage range of 4.5V to 24V
  • 1 MHz ±10% fixed switching frequency
  • 1A continuous output current: High efficiency - up to 95%
  • Input supply under voltage lockout
  • Soft start for controlled startup with no overshoot
  • Full protection for over-current, over-temperature, and voltage output over-voltage
  • Low external component count
  • Packaged in 16 pin QFN


Data Sheet

Application Notes

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