LM73606-Q1 3.5V to 36V, 6A Synchronous Step-Down Voltage Converter | TI.com

LM73606-Q1 (ACTIVE)

3.5V to 36V, 6A Synchronous Step-Down Voltage Converter

3.5V to 36V, 6A Synchronous Step-Down Voltage Converter - LM73606-Q1
 

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 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
LM73606-Q1 LM73605-Q1 LM76002-Q1 LM76003-Q1 LMR14050-Q1 LMS3635-Q1 LMS3655-Q1
3.5     3.5     3.5     3.5     4     3.5     3.5    
36     36     60     60     40     42     42    
1     1     1     1     1     1     1    
34     34     57     57     30     15     15    
6     5     2.5     3.5     5     3.5     5.5    
1     1     1     1     1     1     1    
350     350     300     300     200     250     250    
2200     2200     2200     2200     2500     500     500    
0.015     0.015     0.015     0.015     0.04     0.015     0.015    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed
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
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
Spread Spectrum
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
96     96         98     98     98    
-40 to 125     -40 to 125     -40 to 150     -40 to 150     -40 to 125     -40 to 150     -40 to 150    
Automotive     Automotive     Automotive     Automotive     Automotive     Automotive     Automotive    
WQFN | 30     WQFN | 30     WQFN | 30     WQFN | 30     SO PowerPAD | 8
WSON | 10    
VQFN-HR | 22     VQFN-HR | 22    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM73606-Q1

  Min   Max Range
Vin  V 3.5 to 36.0V
Vout  V 1 to 34V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 125°C


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