LM76002 (ACTIVE)

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

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

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)
Package Group
LM76002 LM46001 LM46002 LM76003 LMR16020 LMR16030 LMR36006 LMR36015
3.5    3.5    3.5    3.5    4.3    4.3    4.2    4.2   
60    60    60    60    60    60    60    60   
1    1    1    1    1    1    1    1   
57    28    28    57    50    50    57    57   
2.5    1    2    3.5    2    3    0.6    1.5   
1    1    1    1    1    1    1    1   
300    200    200    300    200    200      400   
2200    2200    2200    2200    2500    2500      1400   
0.015    0.024    0.027    0.015    0.04    0.04    0.023    0.023   
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
Synchronous Rectification
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking   
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   
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package   
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
  99    99      98    98    98    98   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 150   
WQFN    HTSSOP    HTSSOP    WQFN    SO PowerPAD    SO PowerPAD    VQFN-HR    VQFN-HR   

Other qualified versions of LM76002

Version Part Number Definition
Automotive LM76002-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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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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