Richtek RTQ2962

Description

The RTQ2962 is a 2.5A, high-efficiency, peak current modecontrol asynchronous step-down converter. The deviceoperates with input voltages from 4V to 60V and is protectedfrom load dump transients up to 65V, eases input surgeprotection design. The device can program the outputvoltage between 0.8V to VIN. The low quiescent currentdesign with the integrated low RDS(ON) of high-sideMOSFET achieves high efficiency over the wide load range.The peak current mode control with simple externalcompensation allows the use of small inductors andresults in fast transient response and good loop stability.The wide switching frequency of 100kHz to 2500kHz allowsfor efficiency and size optimization when selecting theoutput filter components. The ultra-low minimum on-timeenables constant-frequency operation even at very highstep-down ratios. For switching noise sensitiveapplications, it can be externally synchronized from300kHz to 2200kHz. The build-in spread-spectrumfrequency modulation further helping systems designerswith better EMC management.The RTQ2962 provides complete protection functions suchas input under-voltage lockout, output under-voltageprotection, output over-voltage protection, over-currentprotection, and thermal shutdown. Cycle-by-cycle currentlimit provides protection against shorted outputs, and softstarteliminates input current surge during start-up. TheRTQ2962 is available in WDFN-10SL 3x3 and SOP-8(Exposed pad) packages.

Features

• AEC-Q100 Grade 1 Qualified
• FMEA Compliant Pinout
• Wide Input Voltage Range-4.5V to 60V-4V to 60V (Soft-start is finished)
• Wide Output Voltage Range : 0.8V to VIN
• 0.8V ±1.5% Reference Accuracy
• Peak Current Mode Control
• Integrated 150mΩ High-Side MOSFET
• Low Quiescent Current : 90μA
• Low Shutdown Current : 1.3μA
• Adjustable Switching : 100kHz to 2.5MHz
• Synchronizable Switching : 300kHz to 2.2MHz
• Power Saving Mode (PSM) at Light Load
• Built-In Spread-Spectrum Frequency Modulation for Low EMI
• Low Dropout at Light Loads with Integrated Boot Recharge FET
• Externally Adjustable Soft-Start by Part Number Option
• Power Good Indication by Part Number Option
• Enable Control
• Adjustable UVLO Voltage and Hysteresis
• Built-In UVLO, UVP, OVP, OCP, OTP

Typical applications

• Industrial Automation and Motor Control, Vehicle Accessories : GPS, Entertainment
• Automotive, Communications and Industrial 12V, 24V, 48V Power Systems,

More information

• Datasheet
• IC product information