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MICROCHIP MIC4575-3.3WT product image
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MICROCHIP MIC4575-3.3WT

Manufacturer
MICROCHIP
MPN
MIC4575-3.3WT
LCSC Part #
C641346
Packaging
TO-220-5
Customer #
Key Attributes
200kHz Step-down type Fixed 3.3V 1A TO-220-5 Voltage Regulators - DC DC Switching Regulators RoHS
DatasheetMICROCHIP MIC4575-3.3WT
RoHS Compliance2 documents available
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QtyUnit Price(Reference Only)Total Amount
1+$ 3.4624$ 3.46
200+$ 1.3406$ 268.12
500+$ 1.2936$ 646.80
1,000+$ 1.2709$ 1270.90
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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℃~+85℃@(TA)
Frequency - Switching200kHz
FunctionStep-down type
Number of Outputs1
FeaturesOvercurrent Protection;Cycle-by-cycle current limiting
TopologyBuck
Output TypeFixed
Operating Voltage4V~24V
Switch tube (built-in/external)Built-in
Output Voltage3.3V
Output Current1A
Quiescent Current5mA
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Introduction

AI Translation

The MIC4575 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200 kHz MIC4575 duplicates the pinout and function of the 52 kHz LM2575. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size. The MIC4575 is available in 3.3V and 5V fixed output versions or a 1.23V to 20V adjustable output version. Both versions are capable of driving a 1A load with excellent line and load regulation. The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified voltages and load conditions. The oscillator frequency is guaranteed to ±10%. In shutdown mode, the regulator draws less than 200 μA standby current. The regulator performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. This series of simple switch-mode regulators requires a minimum number of external components and can operate using a standard series of inductors. Frequency compensation is provided internally. The MIC4575 is available in TO-220 (T) and DDPAK (U) packages for the industrial temperature range.

Features

AI Translation
  • Fixed 200 kHz Operation
  • 3.3V, 5V, 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 Switch Current
  • Wide 4V to 24V Input Voltage Range
  • Wide 1.23V to 20V Output Voltage Range
  • Requires Minimum External Components
  • <200 μA Typical Shutdown Mode
  • 75% Efficiency (Adjustable Version >75% typ.)
  • Standard Inductors and Capacitors are 25% of Typical LM2575 Values
  • Thermal Shutdown
  • Overcurrent 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)
  • Battery Charger
  • Negative Boost Converter
  • Step-Down 6V to 3.3V for Intel Pentium and Similar Microprocessors