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说明
- High-Power DC/DC Converter in Small Solution Size
- Operating VIN range of 4.5V to 36V
- Synchronous DC-DC Converter with Integrated FETs
- 8A/10A Maximum Output Current
- 400kHz and 1.5MHz Fixed Frequency Options
- Fixed Soft-Start Time
- 2.5ms for 400kHz
- 3.5ms for 1.5MHz
- 34ns Minimum On-Time
- Programmable Output Voltage
- 0.8V to 10V for 400kHz
- 0.8V to 6V for 1.5MHz
- High Efficiency at All Load Ranges
- 10μA Quiescent Current in Skip Mode
- Up to 95.6% Eff. at 12VIN/3.3VOUT/400kHz
- Up to 93.9% Eff. at 12VIN/3.3VOUT/1.5MHz
- Frequency Synchronization Input/Output
- 180º Out-of-Phase Between Controller and Target
- Dynamic Current Sharing
特性
The MAX42408/MAX42410 are highly-integrated synchronous buck converters with internal high-side and low-side switches. The ICs deliver up to 8A/10A with input voltage from 4.5V to 36V. The voltage quality can be monitored by the PGOOD signal. The MAX42408/MAX42410 can operate in the dropout mode by running at 99% duty cycle, which make them ideal for industrial applications.
The MAX42408/MAX42410 offer programmable output-voltage options. High switching frequency at 1.5MHz and 400kHz options allow for small external components and reduced output ripple. SYNC input programmability enables three modes for optimized performance: forced PWM mode, skip mode with ultra-low quiescent current, and synchronization to an external clock.
The MAX42408/MAX42410 also come with dual-phase capability, which allows up to 20A designs. Two ICs can be configured as a controller and target with dynamic current sharing and 180º out-of-phase operation.
The MAX42408/MAX42410 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package. They are pin-to-pin compatible with the MAX42405/MAX42406 (5A to 6A) family of products.
APPLICATIONS
- Point-of-Load
- Industrial Automation
- Distributed DC Power Systems
