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The LM51581QRTERQ1 can be used in boost, SEPIC and flyback topologies. It can be started from a single battery and can operate with input supply voltages as low as 1.5 V. The LM51581QRTERQ1 is designed to operate from a single battery. It can operate with input voltages as low as 1.5 V if the BIAS pin voltage is above 3.2 V. Above 3.2 V. the BIAS pin voltage is above 3.2 V. The BIAS pin voltage is 1.5 V. Above 3.2 V. The BIAS pin operates at voltages up to 60 V (absolute maximum 65 V) for automotive load dumps. The switching frequency is dynamically programmable from 100 kHz to 2.2 MHz. A switching frequency of 2.2 MHz minimises AM band interference and provides a small solution with fast transient response. The device offers an optional double random extended spectrum to help reduce EMI over a wide frequency range.

Product Attributes

Function: Boost, Boost/Buck

Output Configuration: Positive

Topology: Boost, Flyback, SEPIC

Output Type: Adjustable

Number of Outputs: 1

Voltage - Input (Min): 1.5V

Voltage - Input (Max): 60V

Voltage - Output (Min/Fixed): 1.5V

Voltage - Output (Max): 83V

Current - Output: 1.63A (Switched)

Frequency - Switching: 100kHz ~ 2.2MHz

Synchronous Rectifier: None

Operating Temperature: -40°C ~ 125°C (TA)

Mounting Type: Surface Mount

Package/Shell: 16-WFQFN Exposed Pad

Supplier Device Package: 16-WQFN (3x3)

Applications

● Battery Powered Wide Input Boost, SEPIC, Flyback Converters

● Automotive regulators in SEPICs

● High voltage LiDAR power supplies

● Automotive LED bias power supplies

● Multi-output flyback converters without optocouplers

● Holding Capacitor Charger

● Inverter bias supplies

● Piezo Driver/Motor Driver Bias Power Supplies

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