概览
优势和特点
- High Feature Set in Ultra-Small Footprint
- High-Efficiency DC-DC Converter
- Up to 12A Output Current
- 2.5V to 5.5V Operating Supply Voltage
- Optional Factory-Preset Output Voltage
- 2.1MHz/4.2MHz Options
- Enable Input
- RESET Output
- Spread-Spectrum Option
- Adaptive On-Time
- 3mm x 3.5mm FCQFN
- High Precision
- 107%/93% OV/UV Monitor
- ±2% OV/UV Accuracy
- ±1% Output Voltage Accuracy
- Excellent Load Transient Performance
- Differential Remote Sense
- PWM and SKIP Mode Operation
- MAXQ Power Architecture
- Ultra-High Efficiency
- Up to 93% Efficiency 5V to 1V
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Qualified
产品详情
The MAX20438 is an ultra-high-efficiency switching regulator that delivers up to 12A load current from 0.5V to 1.2V. The IC operates from 2.5V to 5.5V, making it ideal for on-board, point-of-load (PoL) and post regulation applications. The total output error is less than ±1.0% over load, line, and temperature.
The MAX20438 features adaptive on-time with a switching frequency of 2.1MHz or 4.2MHz. High-frequency operation allows for small-size, all-ceramic capacitor design.
The low-resistance, on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions.
The device features the MAXQ™ power architecture which provides precision transient performance and phase margin. This allows obtaining the maximum power, performance, and precision from the converter over a very wide range of configurations.
The output voltage is preset at the factory to allow customers to achieve ±1% output-voltage accuracy without using expensive 0.1% resistors. The device offers factory-programmable soft-start and RESET times.
The device includes overtemperature shutdown and overcurrent limiting. The MAX20438 is designed to operate in the -40°C to +125°C ambient temperature range.
APPLICATIONS
- Secondary Regulator for SoC/MCU Supply
- PoL and Post-Regulation Applications
产品生命周期
推荐新设计使用
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