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

 

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 converters (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
Type
Package size: mm2:W x L (PKG)
LM76003 LM76002 LM76002-Q1 LMR16020 LMR16030 TPS54360B TPS54360B-Q1 TPS54361 TPS54560 TPS54560B-Q1 TPS54561-Q1
3.5     3.5     3.5     4.3     4.3     4.5     4.5     4.5     4.5     4.5     4.5    
60     60     60     60     60     60     60     60     60     60     60    
1     1     1     1     1     1     0.8     0.8     0.8     0.8     0.8    
57     57     57     50     50     58.8     58.8     59     58.8     58.8     59    
3.5     2.5     2.5     2     3     3.5     3.5     3.5     5     5     5    
1     1     1     1     1     1     1     1     1     1     1    
300     300     300     200     200     100     100     100     100     100     100    
2200     2200     2200     2500     2500     2500     2500     2500     2500     2500     2500    
0.015     0.015     0.015     0.04     0.04     0.146     0.146     0.152     0.146     0.146     1.52    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Wettable Flanks Package    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Tracking
UVLO Adjustable    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode