6-V to 100-V input, 3.5-A non-synchronous buck DC/DC converter with ultra-low quiescent current (IQ)

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 high-performance 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.