MC33166: Buck / Boost / Inverting Regulator, Switching, 3.0 A

The MC34166, MC33166 series are high performance fixed frequency power switching regulators that contain the primary functions required for dc-dc converters. This series was specifically designed to be incorporated in buck, boost and inverting applications with a minimum number of external components and can also be used cost effectively in step-up applications. These Buck Boost Inverting Switching Regulators consist of an internal temperature compensated reference, fixed frequency oscillator with on-chip timing components, latching pulse width modulator for single pulse metering, high gain error amplifier and a high current output switch. Protective features consist of cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown. Also included is a low power standby mode that reduces power supply current to 36 mA.

Features
  • Output Switch Current in Excess of 3.0 A
  • Fixed Frequency Oscillator (72 kHz) with On-Chip Timing
  • Provides 5.05 V Output without External Resistor Divider
  • Precision 2% Reference
  • 0% to 95% Output Duty Cycle
  • Cycle-by-Cycle Current Limiting
  • Undervoltage Lockout with Hysteresis
  • Internal Thermal Shutdown
  • Operation from 7.5 V to 40 V
  • Standby Mode Reduces Power Supply Current to 36 µA
  • Economical 5-Lead TO-220 Package with Two Optional Leadforms.
  • Also Available in Surface Mount D2PAK Package
  • Moisture Sensitivity Level (MSL) Equals 1
  • Pb-Free Packages are Available
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
3.0 A, Step-Up/Down/Inverting Switching RegulatorsMC34166/D (265.0kB)7
Package Drawings (4)
Document TitleDocument ID/SizeRevision
5 LEAD D2PAK936A-02 (35.0kB)D
TO-220 5 LEAD314D-04 (61.5kB)H
TO-220 5 LEAD (THA5)314A-03 (63.0kB)E
TO-220 5 LEAD OFFSET314B-05 (260.2kB)L
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC33166D2TGActivePb-free Halide freeD2PAK-5936A-021Tube50$2.0
MC33166D2TR4GActivePb-free Halide freeD2PAK-5936A-021Tape and Reel800$2.0
MC33166TGActivePb-free Halide freeTO-220-5314D-04NATube50$1.92
MC33166THGLast ShipmentsPb-free Halide freeTO-220-5314A-03NATube50
MC33166TVGActivePb-free Halide freeTO-220-5314B-05NATube50$1.92
MC34166D2TGLast ShipmentsPb-free Halide freeD2PAK-5936A-021Tube50
MC34166D2TR4GActivePb-free Halide freeD2PAK-5936A-021Tape and Reel800$1.9733
MC34166TGActivePb-free Halide freeTO-220-5314D-04NATube50$1.8933
MC34166THGActivePb-free Halide freeTO-220-5314A-03NATube50Contact BDTIC
MC34166TVGActivePb-free Halide freeTO-220-5314B-05NATube50$2.0
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
MC33166D2TGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC33166D2TR4GStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC33166TGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC33166TVGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC34166D2TR4GStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC34166TGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC34166THGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
MC34166TVGStep-Up/Step-DownVoltage Mode7.5401.5 to 403
3.0 A, Step-Up/Down/Inverting Switching Regulators (265.0kB) MC33166
5 LEAD D2PAK LM2931
TO-220 5 LEAD LM2931
TO-220 5 LEAD (THA5) CS8126
TO-220 5 LEAD OFFSET LM2931