LM73605-Q1 Automotive Qualified 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter | TI.com

LM73605-Q1 (ACTIVE)

Automotive Qualified 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter

 

Description

The LM73605-Q1/LM73606-Q1 family of devices are easy-to-use synchronous step-down DC-DC converters capable of driving up to 5 A (LM73605-Q1) or 6 A (LM73606-Q1) of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605-Q1/LM73606-Q1 provide 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 to an external clock, 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 over the entire load range. The family requires few external components and has a pinout designed for simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. The LM73605-Q1 and LM73606-Q1 devices are pin-to-pin compatible for easy current scaling.

Features

  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to +125°C Junction Operating Temperature
    • Device HBM ESD Classification Level 2 kV
    • Device CDM ESD Classification Level C5
  • Wettable Flanks QFN Package (WQFN)
  • Low EMI and Low Switching Noise
  • Low Quiescent Current
    • 0.8 µA in Shutdown (typical)
    • 15 µA in Active Mode With No Load (typical)
  • Wide Voltage Conversion Range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-Resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • Adjustable Frequency Range: 350 kHz to 2.2 MHz
  • Pin-Selectable Auto Mode or Forced PWM Mode
  • Start-up into Pre-Biased Load, Fixed or Adjustable Soft-Start Time, and Tracking
  • Synchronizable to External Clock, Internal Compensation, Power-Good Flag, and Precision Enable
  • Cycle-by-Cycle Current Limiting, Hiccup, UVLO, and Thermal Shutdown Protections
  • Create a Custom Design With the WEBENCH® Power Designer using LM73605-Q1 or LM73606-Q1

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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
LM73605-Q1 LM53635-Q1 LM73606-Q1 LM76002-Q1 LM76003-Q1 LMR14050-Q1 LMS3635-Q1 LMS3655-Q1 TPS5410-Q1 TPS5420-Q1 TPS5430-Q1 TPS54340B-Q1 TPS54360B-Q1 TPS5450-Q1 TPS54540B-Q1 TPS54560B-Q1
3.5     3.5     3.5     3.5     3.5     4     3.5     3.5     5.5     5.5     5.5     4.5     4.5     5.5     4.5     4.5    
36     42     36     60     60     40     42     42     36     36     36     42     60     36     42     60    
1     3.2     1     1     1     1     1     1     1.22     1.23     1.22     0.8     0.8     1.22     0.8     0.8    
34     10     34     57     57     30     15     15     31     31     31     41     58.8     31     41.1     58.8    
5     3.5     6     2.5     3.5     5     3.5     5.5     1     2     3     3.5     3.5     5     5     5    
1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1    
350     1850     350     300     300     200     250     250     500     500     500     100     100     500     100     100    
2200     2350     2200     2200     2200     2500     500     500     500     500     500     2500     2500     500     2500     2500    
0.015     0.018