LMZ34002 4.5V to 40V, 2A Negative Output Power Module | TI.com

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4.5V to 40V, 2A Negative Output Power Module


Recommended alternative parts

  • LMZ35003  -  Positive output version of the LMZ34002


The LMZ34002 SIMPLE SWITCHER® power module is an easy-to-use, negative output voltage power module that combines a 15-W DC-DC converter with a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as five external components and eliminates the loop compensation and magnetics part selection process.

The 9×11×2.8 mm QFN package is easy to solder onto a printed circuit board and allows a compact design with fewer components and excellent power dissipation capability. The LMZ34002 offers the flexibility and the feature-set of a discrete design and is ideal for powering a wide range of ICs and analog circuits requiring a negative output voltage. Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN mounting and testing techniques.


  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Wide Input Voltage Range from 4.5 V to 40 V
  • Output Adjustable from  –3 V to –17 V
  • Supplies up to 2-A of Output Current
  • 45-V Surge Capability
  • Synchronizes to an External Clock
  • Adjustable Slow-Start
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Over Temperature Protection
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
    - Integrated Shielded Inductor
  • For Design Help visit http://www.ti.com/product/lmz34002
  • Create a Custom Design Using the LMZ34002 With the WEBENCH® Power Designer

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LMZ34002

  Min   Max Range
Vin  V 4.5 to 40.0V
Vout  V -17 to -3V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Features Operating temperature range (C) Package Group Rating Type Package size: mm2:W x L (PKG)
LMZ34002 Order now 4.5     40     -17     -3     2     1     EMI Tested
Remote Sense    
-40 to 85     B1QFN | 41     Catalog     Module     41B1QFN: 99 mm2: 9 x 11 (B1QFN | 41)