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ZSPM4011B - Application Circuit
ZSPM4011B - Block Diagram
ZSPM4011B - Pinout


High Efficiency 1A Synchronous Buck Converter

The ZSPM4011B is a DC/DC synchronous switching regulator with fully integrated power switches, internal compensation, and full fault protection. The 1MHz switching frequency enables using small filter components, resulting in reduced board space and reduced bill-of-materials costs. The ZSPM4011B utilizes current mode feedback in normal regulation PWM mode. When the regulator is disabled (EN is low), the device draws less than 10


  • Output voltage options depending on order code: 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V with ±2% output tolerance or adjustable version output voltage range: 0.9V to 5.5V with ±1.5% reference
  • Wide input voltage range: 4.5V to 24V
  • 1MHz +/- 10% fixed switching frequency
  • 1A continuous output current
  • High efficiency – up to 95%
  • Current mode PWM control with PFM mode for improved light load efficiency
  • Voltage supervisor for VOUT reported at the PG pin
  • Input supply under voltage lockout
  • Soft start for controlled startup with no overshoot
  • Full protection for over-current, over-temperature, and VOUT over-voltage
  • Less than 10

Product Specification

Outputs (#)Input Voltage Range (V)Output Current Max (A)Operating Freq
14.50 - 24.0011.00000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. RangeCarrier TypeSample & Buy
ZSPM4011BA1W00ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability
ZSPM4011BA1W15ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability
ZSPM4011BA1W18ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability
ZSPM4011BA1W25ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability
ZSPM4011BA1W33ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability
ZSPM4011BA1W50ActiveNLG16VFQFPN16-40 to 125°CReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
ZSPM4011B Datasheet Datasheet PDF 648 KB Jan 27, 2016
ZSPM4011B Short-form Datasheet Short Form Datasheet PDF 62 KB Jan 27, 2016
User Guides & Manuals
ZSPM4011B-12B-13B Evaluation Kit Description Manual PDF 226 KB Apr 21, 2016
Apps Notes & White Papers
ZSPM401x Application Note - Circuit Layout and Component Selection Application Note PDF 241 KB Apr 20, 2016
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 19, 2016

Evaluation Boards