CS5171: Boost Regulator, Positive, 1.5 A, 280 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
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-8 Narrow Body751-07 (62.6kB)AK
Simulation Models (1)
Document TitleDocument ID/SizeRevisionRevision Date
ISPICE Model Templates for CS5171CS5171ISPICE4 TEMPLETES.ZIP (18.0kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
1.5 A 280 kHz/560 kHz Boost RegulatorsCS5171/D (277.0kB)23
Evaluation Board Documents (9)
Document TitleDocument ID/SizeRevisionRevision Date
CS5171BSTGEVB Bill of Materials ROHS CompliantCS5171BSTGEVB_BOM_ROHS.PDF (78kB)1
CS5171BSTGEVB Evaluation Board User's ManualEVBUM2054/D (292.0kB)0
CS5171BSTGEVB Gerber Layout Files (Zip Format)CS5171BSTGEVB_GERBER.ZIP (175.0kB)0
CS5171BSTGEVB SchematicCS5171BSTGEVB_SCHEMATIC.PDF (44.0kB)0
CS5171BSTGEVB Test ProcedureCS5171BSTGEVB_TEST_PROCEDURE.PDF (56.0kB)0
CS5171HVBSTGEVB Bill of Materials ROHS CompliantCS5171HVBSTGEVB_BOM_ROHS.PDF (94.0kB)1
CS5171HVBSTGEVB Gerber Layout Files (Zip Format)CS5171HVBSTGEVB_GERBER.ZIP (31.0kB)1
CS5171HVBSTGEVB SchematicCS5171HVBSTGEVB_SCHEMATIC.PDF (194.0kB)1
CS5171HVBSTGEVB Test ProcedureCS5171HVBSTGEVB_TEST_PROCEDURE.PDF (234.0kB)1
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
CS5171BSTGEVBActivePb-freeDemonstration Boost Regulator Evaluation Board
CS5171HVBSTGEVBActivePb-freeHVBS Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CS5171ED8GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tube98
CS5171EDR8GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tape and Reel2500$0.72
CS5171GD8GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tube98
CS5171GDR8GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tape and Reel2500$0.7
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
CS5171EDR8GStep-Up Flyback Step-DownCurrent Mode2.7303-391.590275
CS5171GDR8GStep-Down Step-Up FlybackCurrent Mode2.7303-391.590275
1.5 A 280 kHz/560 kHz Boost Regulators (277.0kB) CS5173
ISPICE Model Templates for CS5171 CS5171
CS5171BSTGEVB BOM ROHS CS5171BSTGEVB
EVBUM2054/D - 292 CS5171BSTGEVB
CS5171BSTGEVB GERBER CS5171BSTGEVB
CS5171BSTGEVB SCHEMATIC CS5171BSTGEVB
CS5171BSTGEVB TEST PROCEDURE CS5171BSTGEVB
CS5171HVBSTGEVB BOM ROHS CS5171HVBSTGEVB
CS5171HVBSTGEVB GERBER CS5171HVBSTGEVB
CS5171HVBSTGEVB SCHEMATIC CS5171HVBSTGEVB
CS5171HVBSTGEVB TEST PROCEDURE CS5171HVBSTGEVB
SOIC-8 Narrow Body CM1216