Create a design and simulate using EE-Sim tools: MAX17551ATB+T
The MAX17551ATB+T high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 60V input. The converter can deliver up to 50mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C. The MAX17551ATB+T uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes. The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (5mm x 3mm) μMAX packages. Simulation models are available.Feature
- 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 60V Input
- Adjustable 0.8V to 0.9 x 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 Reliable in Adverse Environments
- Peak Current Limit Protection
- Built-In Output Voltage Monitoring Active-Low RESET
- Programmable EN/UVLO Threshold
- Monotonic Startup in to Prebiased Load
- Overtemperature Protection
- Overtemperature Protection ? High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction Temperature Range
Applications
- Battery-Powered Equipment
- High-Voltage LDO Replacement
- HVAC and Building Control
- Industrial Sensors and Process Control
