SIMPLE SWITCHER® 75V, 0.5A Step-Down Switching Regulator - LM5574

LM5574 (ACTIVE)

SIMPLE SWITCHER® 75V, 0.5A Step-Down Switching Regulator

Recommended alternative parts

  • LM25574  -  42V Input Voltage Max, 0.5A Output Current
  • LM5574-Q1  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
  • LM25574-Q1  -  42V Input Voltage Max, 0.5A Output Current
  • LM25575  -  42V Input Voltage Max, 1.5A Output Current
  • LM25575-Q1  -  42V Input Voltage Max, 1.5A Output Current
  • LM25576  -  42V Input Voltage Max, 3A Output Current
  • LM25576-Q1  -  42V Input Voltage Max, 3A Output Current
  • LM5575  -  75V Input Voltage Max, 1.5A Output Current
  • LM5575-Q1  -  75V Input Voltage Max, 1.5A Output Current
  • LM5576  -  75V Input Voltage Max, 3A Output Current
  • LM5576-Q1  -  75V Input Voltage Max, 3A Output Current

Parametrics Evaluate all products in Step-Down (Buck) Converter

  LM5574 Compare
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Regulated Outputs (#) 1
Vin (Min) (V) 6
Vin (Max) (V) 75
Vout (Min) (V) 1.23
Vout (Max) (V) 70
Iout (Max) (A) 0.5
Iout2 (Max) (A) -
Vout2 (Min) (V) -
Vout2 (Max) (V) -
Topology Buck
  • Boost
  • Buck
  • Buck-Boost
  • Inverting Buck-Boost
Switching Frequency (Max) (kHz) 500
Switch Current Limit (Typ) (A) 0.7
Iq (Typ) (mA) 1
Duty Cycle (Max) (%) 95
Soft Start Adjustable
  • Adjustable
  • Fixed
  • None
Compensation External
  • External
  • Internal
  • Not Needed
Special Features Enable
Tracking
  • Adjustable Current Limit
  • Adjustable UVLO
  • Dynamic Voltage Scaling
  • Enable
  • Frequency Synchronization
  • Light Load Efficiency
  • Phase Interleaving
  • Power Good
  • Synchronous Rectification
  • Tracking
Control Mode Current Mode
  • COT with emulated ripple
  • Constant on-time (COT)
  • Current Mode
  • D-CAP
  • D-CAP+
  • D-CAP2
  • D-CAP3
  • Voltage Mode
Preset Vout (V) -
Vref Accuracy (Typ) (%) 1.5
Rating Catalog
  • Automotive
  • Catalog
  • HiRel Enhanced Product
  • High Temp
  • Military
  • Space
Operating Temperature Range (C) -40 to 125 °C to °C
Approx. Price (US$) 1.55 | 1ku
Package Group TSSOP
  • CFP
  • DDPAK/TO-263
  • DSBGA
  • DSLGA
  • HTSSOP
  • LQFN-CLIP
  • LSON-CLIP
  • MSOP-PowerPAD
  • PDIP
  • QFN
  • SO PowerPAD
  • SOIC
  • SON
  • SOT
  • SOT-23
  • TO-220
  • TO-263
  • TSSOP
  • USON
  • VQFN
  • VQFN-CLIP
  • VSON
  • VSSOP
  • WQFN
  • WSON
  • XCEPT
  Sample & Buy Reset Update

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Other qualified versions of LM5574

Version Part Number Definition
Automotive LM5574-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
WEBENCH® LM5574
    Min   Max   Range  
  Vin V    6.00 – 75.00V  
  Vout V    -65.00 – 75.00V  
  Iout A    ≤ 0.5A  
  Ambient Temp °C    -40 – 125°C  
Footprint BOM Cost Efficiency
 
   
 
 
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