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1-A Simple Step-Down Switching Voltage Regulators

Availability: 3,240


Package | PIN: TO-220 (KV) | 5
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $2.87
10-24 $2.58
25-99 $2.41
100-249 $2.11
250-499 $1.98
500-749 $1.68
750-999 $1.42
1,000+ $1.35


  • Fixed 3.3-V, 5-V, 12-V, and 15-V Options with
    ±5% Regulation (Max) Over Line, Load, and
    Temperature Conditions
  • Adjustable Option With a Range of 1.23 V to
    37 V (57 V for HV Version) and ±4%
    Regulation (Max) Over Line, Load, and Temperature
  • Specified 1-A Output Current
  • Wide Input Voltage Range
    • 4.75 V to 40 V (60 V for HV Version)
  • Requires Only Four External Components (Fixed Versions)
    and Uses Readily Available Standard Inductors
  • 52-kHz (Typ) Fixed-Frequency Internal Oscillator
  • TTL Shutdown Capability With 50-µA (Typ) Standby
  • High Efficiency
    • As High as 88% (Typ)
  • Thermal Shutdown and Current-Limit Protection with
    Cycle-by-Cycle Current Limiting

Texas Instruments  TL2575HV-33IKV

The TL2575 and TL2575HV devices provide all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. They require four to six external components for operation. They accept a wide input-voltage range of up to 60 V (TL2575-HV) and are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version. The TL2575 and TL2575HV devices have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external ON/OFF pin.