LM76003 3.5V to 60V, 3.5A Synchronous Step-Down Voltage Converter | TI.com

LM76003 (ACTIVE)

3.5V to 60V, 3.5A Synchronous Step-Down Voltage Converter

3.5V to 60V, 3.5A Synchronous Step-Down Voltage Converter - LM76003
 

Description

The LM76002/LM76003 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 2.5 A (LM76002) or 3.5 A (LM76003) of load current from an input up to 60 V. The LM76002/LM76003 provides exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency. This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR22) and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and short-circuit protection. The LM76002/LM76003 device is available in the WQFN
30-pin leadless package with wettable flanks.

Features

  • Integrated Synchronous Rectification
  • Input Voltage 3.5 V to 60 V (65 V Maximum)
  • Output Current:
    • LM76002: 2.5 A
    • LM76003: 3.5 A
  • Output Voltage 1 V to 95% VIN
  • 15-µA Quiescent Current in Regulation
  • Wide Voltage Conversion Range
    • tON-MIN = 65 ns (Typical)
    • tOFF-MIN = 95 ns (Typical)
  • System-Level Features
    • Synchronization to External Clock
    • Power-Good Flag
    • Precision Enable
    • Adjustable Soft Start (6.3 ms Default)
    • Voltage Tracking Capability
  • Pin-Selectable FPWM Operation
  • High-Efficiency at Light-Load Architecture (PFM)
  • Protection Features
    • Cycle-by-Cycle Current Limit
    • Short-Circuit Protection With Hiccup Mode
    • Overtemperature Thermal Shutdown Protection
  • Create a Custom Design Using the LM76002/03 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
LM76003 LM76002 LM76002-Q1 LMR16020 LMR16030
3.5     3.5     3.5     4.3     4.3    
60     60     60     60     60    
1     1     1     1     1    
57     57     57     50     50    
3.5     2.5     2.5     2     3    
1     1     1     1     1    
300     300     300     200     200    
2200     2200     2200     2500     2500    
0.015     0.015     0.015     0.04     0.04    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Wettable Flanks Package    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Wettable Flanks Package    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Wettable Flanks Package    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
      98     98    
-40 to 125     -40 to 125     -40 to 150     -40 to 125     -40 to 125    
Catalog     Catalog     Automotive     Catalog     Catalog    
WQFN     WQFN     WQFN     SO PowerPAD     SO PowerPAD    

Other qualified versions of LM76003

Version Part Number Definition
Automotive LM76003-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
Coming Soon!
WEBENCH® Power Designer is now even easier to use. Learn more.

WEBENCH® Designer LM76003

  Min   Max Range
Vin  V 3.5 to 60.0V
Vout  V 1 to 57V
Iout  A ≤ 3.5A
Ambient Temp  °C -40 to 125°C


Footprint BOM Cost Efficiency


Preview design