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MICROCHIP LM2575-12WT product image
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MICROCHIP LM2575-12WTRoHS

Manufacturer
MICROCHIP
MPN
LM2575-12WT
LCSC Part #
C641092
Packaging
TO-220-5
Customer #
Key Attributes
52kHz Step-down type Fixed 12V 1A TO-220-5 Voltage Regulators - DC DC Switching Regulators RoHS
Datasheetpdf iconMICROCHIP LM2575-12WT
In-Stock: 10
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QtyUnit PriceTotal Amount
1+$ 2.9667$ 2.97
10+$ 2.8963$ 28.96
30+$ 2.8515$ 85.55
100+$ 2.8051$ 280.51
Standard Packaging50/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerMICROCHIP
PackagingTO-220-5
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching52kHz
FunctionStep-down type
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Overcurrent Protection
TopologyBuck
Output TypeFixed
Operating Voltage4V~40V
Switch tube (built-in/external)Built-in
Output Voltage12V
Output Current1A
Quiescent Current5mA
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Introduction

AI Translation

The LM2575 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, 12V, fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 1A load with excellent line and load regulation. These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator. The LM2575 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. A standard series of inductors available from several different manufacturers are ideal for use with the LM2575 series. This feature greatly simplifies the design of switchmode power supplies. The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified input voltages and output load conditions. The oscillator frequency is guaranteed to ±10%. External shutdown is included, featuring less than 200μA standby current. The output switch includes cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.

Features

AI Translation
  • 3.3V, 5V, 12V, and adjustable output versions
  • Voltage over specified line and load conditions: Fixed version: ±3% max. output voltage Adjustable version: ±2% max. feedback voltage
  • Guaranteed 1A output current
  • Wide input voltage range – 4V to 40V
  • Wide output voltage range – 1.23V to 37V
  • Requires only 4 external components
  • 52kHz fixed frequency internal oscillator
  • Low power standby mode IQ typically <200μA
  • 80% efficiency (adjustable version typically >80%)
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection
  • 100% electrical thermal limit burn-in

Applications

AI Translation
  • Simple high-efficiency step-down (buck) regulator
  • Efficient pre-regulator for linear regulators
  • On-card switching regulators
  • Positive to negative converter (inverting Buck-Boost)
  • Isolated flyback converter using minimum number of external components
  • Negative boost converter