3.5V to 60V, 2.5A Synchronous Step-Down Voltage Converter - LM76002

LM76002 (ACTIVE)

3.5V to 60V, 2.5A Synchronous Step-Down Voltage Converter

 

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

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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
LM76002 LM76003 LMR16020 LMR16030
3.5    3.5    4.3    4.3   
60    60    60    60   
1    1    1    1   
57    57    50    50   
2.5    3.5    2    3   
1    1    1    1   
300    300    200    200   
2200    2200    2500    2500   
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
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   
    98    98   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog   
WQFN    WQFN    SO PowerPAD    SO PowerPAD   
New! Interactive Design
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WEBENCH® Designer LM76002

  Min   Max Range
Vin  V 3.5 to 60.0V
Vout  V 1 to 57V
Iout  A ≤ 2.5A
Ambient Temp  °C -40 to 125°C


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