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Datasheet Microchip MIC4576

ManufacturerMicrochip
SeriesMIC4576

The MIC4576 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators

Datasheets

  • Download » Datasheet PDF, 217 Kb, Revision: 11-05-2015
    MIC4576 Data Sheet
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    MIC4576 Micrel, Inc. MIC4576
    200kHz Simple 3A Buck Regulator General Description Features The MIC4576 is a series of easy to use п¬Ѓxed and adjustable
    BiCMOS step-down (buck) switch-mode voltage regulators.
    The 200kHz MIC4576 duplicates the pinout and function of
    the 52kHz LM2576. The higher switching frequency may
    allow up to a 2:1 reduction in output filter inductor size. Fixed 200kHz operation 3.3V, 5V, and adjustable output versions Voltage over specified line and load conditions:
    Fixed version: В±3% max. output voltage
    Adjustable version: ±2% max. feedback voltage Guaranteed 3A switch current Wide 4V to 36V input voltage range Wide 1.23V to 33V output voltage range Requires minimum external components < 200µA typical shutdown mode 75% efficiency (adjustable version > 75% typical) Standard inductors are 25% of typical LM2576 values Thermal shutdown Overcurrent protection 100% electrical thermal limit burn-in The MIC4576 is available in 3.3V, and 5V fixed output versions or a 1.23V to 33V adjustable output version. Both
    versions are capable of driving a 3A load with excellent line
    and load regulation.
    The feedback voltage is guaranteed to В±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 200ВµA
    standby current. The regulator performs cycle-by-cycle
    current limiting and thermal shutdown for protection under
    fault conditions. Applications 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 MIC4576 is available in TO-220 (T) and TO-263 (U)
    packages for the industrial temperature range. Simple high-efficiency step-down (buck) regulator
    Efficient preregulator for linear regulators
    On-card switching regulators ...

Prices

Status

MIC4576-3.3WTMIC4576-3.3WUMIC4576-3.3WU-TRMIC4576-5.0WTMIC4576-5.0WUMIC4576-5.0WU-TRMIC4576WTMIC4576WUMIC4576WU-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

Parametrics

MIC4576-3.3WTMIC4576-3.3WUMIC4576-3.3WU-TRMIC4576-5.0WTMIC4576-5.0WUMIC4576-5.0WU-TRMIC4576WTMIC4576WUMIC4576WU-TR
# of Outputs111111111
Automotive RatedNoNoNoNoNoNoNoNoNo
Duty Cycle Max, %0.950.950.950.950.950.950.950.950.95
Input Voltage Range, V4 - 364 - 364 - 364 - 364 - 364 - 364 - 364 - 364 - 36
Light Load Efficiency ModeNoNoNoNoNoNoNoNoNo
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85
Output Current, mA) Max300030003000300030003000300030003000
Output Voltage Range, V1.231.231.231.231.231.231.231.231.23
Quiescent Current, mA) type555555555
Regulator TypeStep Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA505050505050505050
Switching Frequency, kHz200200200200200200200200200
Synchronous RectifierNoNoNoNoNoNoNoNoNo
Vfb, V1.231.231.231.231.231.231.231.231.23

Eco Plan

MIC4576-3.3WTMIC4576-3.3WUMIC4576-3.3WU-TRMIC4576-5.0WTMIC4576-5.0WUMIC4576-5.0WU-TRMIC4576WTMIC4576WUMIC4576WU-TR
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Moldel Line

Series: MIC4576 (9)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 75V

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