LM34966-Q1 500kHz Wide VIN Non-synchronous Boost/SEPIC/Flyback Controller

1 Features

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C T_A
- Maximum operating temperature 150°C T_J
Functional Safety-Capable
- Documentation available to aid functional safety system design
Suited for wide input operating range car battery applications
- 3.5-V to 40-V operating range (45-V abs max)
- 2.97-V to 16-V when BIAS = VCC
- Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
- Input transient protection up to 45 V
- Minimized battery drain
  - Low shutdown current ( I_Q ≤ 2.6 µA )
  - Low operating current ( I_Q ≤ 490 µA )
Small solution size and low cost
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.0-A peak standard MOSFET driver
- Supports external VCC supply
Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable switching frequency from 100 kHz to 500 kHz
Integrated protection features
- Constant peak current limiting over input voltage
- Hiccup mode overload protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown
Accurate ±1% accuracy feedback reference
Programmable extra slope compensation
Adjustable soft start
PGOOD indicator
14-Pin HTSSOP package (5.0 mm × 4.4 mm)
Create a custom design using the LM34966-Q1 with the WEBENCH® power designer