1 Features

? Designed for reliable and rugged applications

– Wide input voltage range of 6 V to 100 V

– –40°C to +125°C junction temperature range

– Fixed 3.5-ms internal soft-start timer

– Peak current-limit protection

– Input UVLO and thermal shutdown protection

– Functional Safety-Capable

? Documentation available to aid functional

safety system design

? Optimized for ultra-low EMI requirements

– Meets CISPR 25 class 5 standard

? Suited for scalable Industrial power supplies

– Pin-to-pin compatible with the LM5163-Q1 and

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 high-side power

MOSFET

– 1.2-V internal voltage reference

– No loop compensation components

– Internal VCC bias regulator and boot diode

? Create a custom regulator design using

WEBENCH? Power Designer

2 Applications

? Hybrid, electric and powertrain systems

? Inverter and motor control

? Industrial transport

3 Description

The LM5013 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 ratios, enabling

the direct step-down from a 48-V nominal input to

low-voltage rails for reduced system complexity and

solution cost. The LM5013 operates during input

voltage dips as low as 6 V, at nearly 100 duty

cycle if needed, making it an excellent choice for highperformance

industrial applications.

With an integrated high-side power MOSFET, the

LM5013 delivers up to 3.5 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 LM5013 include ultra-low IQ and a 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 LM5013 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.