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Gated-Oscillator-Based Automotive DC-DC Boost Converter

Availability: 250


Package | PIN: WSON (NHL) | 14
Temp: Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
Qty Price
1-99 $1.44
100-249 $1.26
250-999 $0.86
1,000+ $0.64


  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C AmbientOperating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification LevelC4A
  • 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 VDD Pin of Supply)
  • Low Shutdown Current (IQ < 2.5 µA)
  • 4-mm × 4-mm Thermally Enhanced WSON Package Option

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Texas Instruments  LM2623QNHLTQ1

The LM2623-Q1 is a high-efficiency, general-purpose, step-up DC-DC switching regulatorfor automotive systems. The device accepts an input voltage between 0.9 V and 14 V and converts itinto 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 toprogram 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 inputvoltage or input-to-output voltage ratio. The LM2623-Q1 uses a very simple, on/off regulation modeto produce good efficiency and stable operation over a wide operating range. The device normallyregulates by skipping switching cycles when it reaches the regulation limit (pulse frequencymodulation (PFM)).

Refer to Non-Linear Effect andChoosing the Correct C3 Capacitor toresolve any design challenges before board design is finalized.