MAX17670EATB+

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. MAX17670, MAX17671, and MAX17672 are dual-output regulators integrating a 4V to 60V, 150mA high-voltage, high-efficiency, Himalaya synchronous step-down converter with internal MOSFETs and a high-PSRR, low-noise, 2.35V to 5.5V, 50mA linear regulator. The MAX17670 and MAX17671 provide fixed step-down converter output voltages of 3.3V and 5V, respectively. The output voltage of the MAX17672 stepdown converter is adjustable (0.8V up to 90% of VIN). 3.3V (MAX17671 and MAX17672 only), 3.0V, 2.5V, 1.8V, 1.5V, and 1.2V linear regulator output voltage options are supported. The feedback-voltage regulation accuracy over -40℃ to +125℃ temperature range for the linear regulator is ±1.3% and for the step-down converter is ±2%. The devices are available in a compact 10-pin (3mm×3mm) TDFN package. Simulation models are available.

Applications

• Industrial Sensors and Process Control
• High-Voltage Linear Regulator Replacement
• Battery-Powered Equipment
• HVAC and Building Control

Key features

• Reduces External Components and Total Cost
• No Schottky–Synchronous Operation
• Internal Compensation
• Built-In Soft-Start
• All-Ceramic Capacitors, Compact Layout
• Protection against Inductive Short at Step-Down Converter Output
• Reduces Number of DC-DC Regulators to Stock
• Wide 4V to 60V Input Range for the Step-Down Converter Regulator
• Up to 98% Duty-Cycle Step-Down Operation
• 200kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization for Step-down Converter
• 2.35V to 5.5V Input Range for the Linear Regulator
• Linear Regulator with up to 50mA Load Current Capability
• Reduces Power Dissipation
• 50μA No-Load Supply Current
• PFM Enables Enhanced Light-Load Efficiency
• 2.5μA Shutdown Current
• Bootstrap Bias Input for Improved Efficiency
• Reliable Operation in Adverse Environments
• Peak Current-Limit Protection
• Built-In Output-Voltage Monitoring with RESET
• Resistor Programmable EN/UVLO Threshold
• Monotonic Startup into Prebiased Load
• Overtemperature Protection
• High Industrial -40℃ to +125℃ Ambient Operating Temperature Range / -40℃ to +150℃ Junction Temperature Range