LMZ34202 4.5V to 42V, 2A Step-Down Power Module in QFN Package | TI.com

LMZ34202 (ACTIVE)

4.5V to 42V, 2A Step-Down Power Module in QFN Package

 

Description

The LMZ34202 power module is an easy-to-use integrated power supply that combines a 2-A DC-DC converter with a shielded inductor and passives into a low profile, QFN package. This total power solution allows as few as three external components while maintaining an ability to adjust key parameters to meet specific design requirements.

The QFN package is easy to solder to a printed circuit board, allows reflow profiles up to 245°C, and has excellent power dissipation capability. The LMZ34202 offers flexibilty with many features and is ideal for powering a wide range of devices and systems.

Features

  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 10 mm × 10 mm × 4.3 mm Package
  • Wide-Output Voltage Adjust (2.5 V to 7.5 V)
  • Adjustable Switching Frequency
    (200 kHz to 1 MHz)
  • Synchronizes to an External Clock
  • Automatic PFM Mode for Light Load Efficiency
  • Adjustable Soft-Start Time
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Over-Temperature Thermal Shutdown Protection
  • Over-Current Protection (Hiccup Mode)
  • Pre-Bias Output Start-Up
  • Operating Temperature Range: –40°C to 105°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
    – Integrated Shielded Inductor
  • Create a Custom Design using the LMZ34202 with the WEBENCH® Power Designer

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Parametrics Compare all products in Buck modules (integrated inductor)

 
Iout (Max) (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Soft Start
Features
Regulated Outputs (#)
Package Size: mm2:W x L (PKG)
Switching Frequency (Max) (kHz)
Switching Frequency (Min) (kHz)
Switching Frequency (Typ) (kHz)
Topology
Operating Temperature Range (C)
Duty Cycle (Max) (%)
Package Group
Rating
Type
LMZ34202 LMZ35003 LMZ36002 LMZM33603
2     2.5     2     3    
4.5     7     4.5     4    
42     50     60     36    
2.5     2.5     2.5     1    
7.5     15     7.5     18    
Adjustable     Adjustable     Adjustable     Fixed    
EMI Tested
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Remote Sense    
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking    
EMI Tested
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Remote Sense    
EMI Tested
Enable
Frequency Synchronization
Power Good    
1     1     1     1    
43B3QFN: 100 mm2: 10 x 10 (B3QFN | 43)     41B1QFN: 99 mm2: 9 x 11 (B1QFN | 41)     43B3QFN: 100 mm2: 10 x 10 (B3QFN | 43)     18B2QFN: 63 mm2: 7 x 9 (B2QFN | 18)    
1000     1000     1000     1200    
200     300     200     200    
500     400     500     400    
Buck
Synchronous Buck    
Buck     Buck
Synchronous Buck    
Buck
Synchronous Buck    
-40 to 105     -40 to 85     -40 to 105     -40 to 105    
90     85     95     90    
B3QFN | 43     B1QFN | 41     B3QFN | 43     B2QFN | 18    
Catalog     Catalog     Catalog     Catalog    
Module     Module     Module     Module    

Design tool

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

WEBENCH® Designer LMZ34202

  Min   Max Range
Vin  V 4.5 to 42.0V
Vout  V 2.5 to 7.5V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 105°C


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