Analog Devices / Maxim Integrated MAX17532 DC-DCコンバータ
Maxim MAX17532 DC-DCコンバータは、高効率、高電圧の同期整流ステップダウンコンバータです。MAX17532は、4V～42Vの入力で動作する内蔵MOSFETを特徴としています。MAX17532は、最大100mAの電流と、0.8V～0.9xVINの出力電圧を供給します。フィードバック電圧は-40°C～125°Cで±1.75%以内の精度です。MAX17532はピーク電流モード制御を使用し、パルス幅変調（PWM）またはパルス周波数変調（PFM）での動作が可能です。
特徴
- 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
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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