Analog Devices / Maxim Integrated MAX17532 DC-DC-Wandler

Maxim MAX17532 DC-DC-Wandler sind hocheffiziente, synchrone Hochspannungs-Abwärtswandler. Der MAX17532 verfügt über integrierte MOSFETs, die über einen 4V- bis 42V-Eingang betrieben werden. Der MAX17532 liefert bist zu 100mA Strom und eine Ausgangsspannung von 0,8V bis zu 0,9xVIN. Die Rückkopplungsspannung ist präzise innerhalb von ±1,75% über -40°C bis +125°C. Der MAX17532 nutzt Spitzenstromregelung und kann im Pulsweitenmodulationsmodus (PWM) oder Pulsfrequenzmodulationsmodus (PFM) betrieben werden.

Merkmale

  • Reduces external components and total cost
    • No Schottky-synchronous
    • Internal compensation for any output voltage
    • Built-in soft-start
    • All-ceramic capacitors, compact layout
  • Reduces number of DC-DC regulators to stock
    • Wide 4V to 42V input
    • Adjustable 0.8V to 0.9V VIN output
    • 100kHz to 2.2MHz adjustable switching frequency with external synchronization
  • Reduces power dissipation
    • 22µA quiescent current
    • Peak efficiency > 90%
    • PFM enables enhanced light-load efficiency
    • 1.2µA shutdown current
  • Operates reliably in adverse environments
    • Peak current limit protection
    • Built-in output voltage monitoring active-low RESET
    • Programmable EN/UVLO threshold
    • Monotonic startup into pre-biased load
    • Overtemperature protection
    • -40°C to +125°C operation

Block Diagram

Analog Devices / Maxim Integrated MAX17532 DC-DC-Wandler

Evaluation Kit

Analog Devices Inc. MAX17532AUBEVKIT 5V Evaluation Kit is a fully assembled and tested circuit board that demonstrates the performance of the MAX17532. The MAX17532 is a 42V, 100mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin µMAX package. The evaluation kit operates over a wide input voltage range of 6V to 42V and provides up to 100mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to VIN). The evaluation kit is programmed to switch at a frequency of 220kHz. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current-limit protection, undervoltage lockout, and thermal shutdown.
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Veröffentlichungsdatum: 2015-04-29 | Aktualisiert: 2025-09-11