LM2623-Q1

• AEC-Q100 Qualified for Automotive Applications:
  • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C4A
• Good Efficiency Over a Very Wide Load Range
• Very Low Output Voltage Ripple
• Up to 2-MHz Switching Frequency
• 0.9-V to 14-V Operating Voltage
• 1.1-V Start-Up Voltage
• 1.24-V to 14-V Adjustable Output Voltage
• 0.17-Ω Internal MOSFET
• Up to 90% Regulator Efficiency
• 80-µA Typical Operating Current (Into V_DD Pin of Supply)
• Low Shutdown Current (I_Q < 2.5 µA)
• 4-mm × 4-mm Thermally Enhanced WSON Package Option

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The LM2623-Q1 is a high-efficiency, general-purpose, step-up DC-DC switching regulator for automotive systems. The device accepts an input voltage between 0.9 V and 14 V and converts it into a regulated output voltage between 1.24 V and 14 V.

In order to adapt to a number of applications, the LM2623-Q1 allows the designer to program the output voltage, the operating frequency (300 kHz to 2 MHz), and duty cycle (17% to 90%) to optimize performance. The selected values can be fixed or can vary with input voltage or input-to-output voltage ratio. The LM2623-Q1 uses a very simple, on/off regulation mode to produce good efficiency and stable operation over a wide operating range. The device normally regulates by skipping switching cycles when it reaches the regulation limit (pulse frequency modulation (PFM)).

Refer to Non-Linear Effect and Choosing the Correct C3 Capacitor to resolve any design challenges before board design is finalized.