CS5173: Boost Regulator, Positive, 1.5 A, 560 kHz

The CS5171/2/3/4 products are 280 kHz/560 kHz switching regulators with a high efficiency, 1.5 A integrated switch. These parts operate over a wide input voltage range, from 2.7 V to 30 V. The flexibility of the design of the Boost Regulator allows the chips to operate in most power supply configurations, including boost, flyback, forward, inverting and SEPIC. The ICs utilize current mode architecture, which allows excellent load and line regulation, as well as a practical means for limiting current. Combining high frequency operation with a highly integrated regulator circuit results in an extremely compact power supply solution. The circuit design includes provisions for features such as frequency synchronization, shutdown, and feedback controls for either positive or negative voltage regulation. These parts are pin-to-pin compatible with LT1372 / 1373.

Features
  • Wide Input Range: 2.7V to 30V
  • High Frequency Operation
  • Minimum External Components
  • Easy External Synchronization
  • Built-in Overcurrent Protection
  • Frequency Foldback
  • Thermal Shutdown with Hysteresis
  • Integrated Power Switch: 1.5A Guaranteed
  • Pin-to-Pin Compatible with LT1372 / 1373
  • Wide Ambient Temperature Range-Industrial Grade: -40C to 85C-Commercial Grade: 0C to 70C
  • Shut Down Current: 50uA Maximum
Benefits
  • Ability to use with various input supply types
  • Allows for Small Components
  • Small PCB size / High power density
  • Synchronize frequency to reduce noise in the system
  • Protection Feature
  • Reduces Component Stress During an Overcurrent Condition
  • Protection feature
  • Reduced size / High power density
  • Easy to replace Linear Tech product
  • Guaranteed performance over wide temp range
  • Low power state for battery powered applications
Applications
  • DC-DC Boost
  • Multiple Output Flyback Supplies
  • Inverting Supplies
End Products
  • CCFL Backlight Driver
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
1.5 A 280 kHz/560 kHz Boost RegulatorsCS5171/D (277.0kB)23
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-8 Narrow Body751-07 (62.6kB)AK
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CS5173ED8GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tube98
CS5173EDR8GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tape and Reel2500$0.96
CS5173GD8GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tube98
CS5173GDR8GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tape and Reel2500$0.9333
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
CS5173EDR8GStep-UpCurrent Mode2.7301.5Up to 1000
CS5173GDR8GStep-UpCurrent Mode2.7301.5Up to 1000
1.5 A 280 kHz/560 kHz Boost Regulators (277.0kB) CS5173
SOIC-8 Narrow Body CM1216