1 Features
• AEC-Q100-qualified for automotive applications
– Device temperature grade 1: –40°C to +125°C,
ambient temperature range
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Designed for reliable and rugged applications
– Wide input voltage range of 6 V to 100 V
– –40°C to +150°C junction temperature range
– Fixed 3.5-ms internal soft-start timer
– Peak current-limit protection
– Input UVLO and thermal shutdown protection
• Optimized for ultra-low EMI requirements
– Meets CISPR 25 Class 5 standard
• Suited for scalable automotive power supplies
– Pin-to-pin compatible with the LM5163-Q1
LM5164-Q1 (100 V, 0.5 A or 1 A), and LM5013-
Q1 (100 V, 3.5 A)
– 50-ns low minimum on times and off times
– 10-μA no-load sleep current
– 3.1-μA shutdown quiescent current
• Integration reduces solution size and cost
– COT mode control architecture
– Integrated 100-V, 0.25-Ω power MOSFET
– 1.2-V internal voltage reference
– No loop compensation components
– Internal VCC bias regulator and boot diode
• Create a custom regulator design with the
LM5013-Q1 using WEBENCH® Power Designer

2 Applications
• Hybrid, electric, and powertrain systems
• Inverter and motor control
• 48-V to 12-V DC/DC converter

3 Description
The LM5012-Q1 non-synchronous buck converter is
designed to regulate over a wide input voltage range,
minimizing the need for external surge suppression
components. A minimum controllable on time of 50 ns
facilitates large step-down conversion ratio, enabling
the direct step-down for 48 -V nominal input to lowvoltage
rails for reduced systems complexity and
solution cost. The LM5012-Q1 operates during input
voltage dips as low as 6 V, at nearly 100 % duty
cycle if needed, making it an excellent choice for highperformance
48-V battery automotive application and
MHEV/EV systems.
With an integrated high-side power MOSFET, the
LM5012-Q1 delivers up to 2.5 A of output current. A
constant on-time (COT) control architecture provides
nearly constant switching frequency with excellent
load and line transient response. Additional features
of the LM5012-Q1 include ultra-low IQ operation for
high light-load efficiency, innovative peak overcurrent
protection, integrated VCC bias supply and bootstrap
diode, precision enable and input UVLO, and thermal
shutdown protection with automatic recovery. An
open-drain PGOOD indicator provides sequencing,
fault reporting, and output voltage monitoring.
The LM5012-Q1 2.5 A is qualified to automotive
AEC-Q100 grade 1 and is available in a 8-pin SO
PowerPAD™ integrated circuit package. The device
1.27-mm pin pitch provides adequate spacing for
high-voltage applications.