1 Features
1• 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 VDD Pin of
Supply)
• Low Shutdown Current (IQ < 2.5 μA)
• 4-mm × 4-mm Thermally Enhanced WSON
Package Option

2 Applications
• Automotive Camera
• Automotive Radar
• Automotive GPS
• Flash Memory Programming
• White-LED Drive

3 Description
The LM2623-Q1 is a high-efficiency, generalpurpose,
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.