Maxim and Analog Devices Inc.’s two miniature converters, the MAX20402 / MAX20403 ICs, are designed with high-side and low-side switches. The pair delivers up to 2.5 A and 3.5 A respectively and does so over a wide input voltage range from 3 V to 36 V. Voltage quality can be monitored by monitoring the PGOOD signal. Both ICs are fail-safe, operating at 99% duty cycle, making them ideal for automotive and industrial applications
The MAX20402/MAX20403 are externally programmable or have internally fixed output voltages from 5V to 3.3V. Fixed internal frequency options of 3MHz/2.1MHz/400kHz are available. This allows for small external components and also ensures no AM interference and reduced output ripple.
When SYNC is low, the MAX20402/MAX20403 automatically enter skip mode under light loads. Then at idle an ultra low quiescent current of 10µA. To help improve anti-EMI performance, a pin-selectable forced PWM mode is available. The devices are designed to minimize radiated EMI emissions through a spread spectrum frequency modulation option when testing a modulation frequency.
Both MAX20402/MAX20403 models are available in 3 mm x 3 mm FC2QFN packages and use only a sparse number of external components.
Lots of features in a small form factor
- Operating input voltage range – 3V to 36V
- Synchronous DC-DC converter with integrated FETs up to 2.5 A/3.5 A
- 10µA quiescent current in forward mode
- Extended spectrum option
- Programmable output voltage from 0.8V to 12V or fixed 5V/3.3V option available
- 99% duty cycle with low dropout
- Switching frequency 3MHz/2.1MHz/400kHz
- Fixed internal soft start of 2.5ms
Safety critical applications with high accuracy
- ±1.5% output voltage accuracy in FPWM
- Fully programmable UVLO thresholds from Precision Enable Thresholds
- PGOOD Accurate window
Automotive environment
- Forced PWM, average current mode, skip operation
- Short circuit protection, overheat and overvoltage protection
- 3mmx3mm FC2QFN
- -40°C to +125°C Operating Temp
- 42V Load resistance
- AEC-Q100 qualified
Other applications
- Automotive applications
- ADAS systems
- Radar modules
- Infotainment
- Industrial
- High voltage DC-DC converters
For more information on Analog Devices Inc. MAX20402/MAX20403, IC Buck Converters see product page on Maxim’s website.
Maxim Integrated | maximintegrated.com
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Maxim’s Tiny Buck Converters are Ready for Automotive Applications
