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Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM5022-Q1

SNVSAG9 – MARCH 2016

LM5022-Q1 2.2MHz, 60 V Low-Side Controller For Boost and SEPIC

1

1 Features

1

•

AEC-Q100 Grade 1 Qualified with the following

results:

–

Device Temperature Grade 1: -40°C to 125°C

Ambient Operating Temperature Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C5

•

Internal 60-V Start-Up Regulator

•

1-A Peak MOSFET Gate Driver

•

startup)

•

Duty Cycle Limit of 90%

•

Programmable UVLO with Hysteresis

•

Cycle-by-Cycle Current Limit

•

Single Resistor Oscillator Frequency Set

•

Adjustable Switching Frequency to 2.2MHz

•

External Clock Synchronization

•

Slope Compensation

•

Adjustable Soft Start

•

10-Pin VSSOP Package

2 Applications

•

Boost Converter

•

SEPIC Converter

3 Description

The LM5022-Q1 is a high voltage low-side N-channel

MOSFET controller ideal for use in boost and SEPIC

regulators. It contains all of the features needed to

implement single-ended primary topologies. Output

voltage regulation is based on current-mode control,

which eases the design of loop compensation while

providing inherent input voltage feed-forward. The

LM5022-Q1

includes

a

start-up

regulator

that

operates over a wide input range of 6 V to 60 V. The

PWM controller is designed for high-speed capability

including an oscillator frequency range up to 2.2 MHz

and total propagation delays less than 100 ns.

Additional

features

include

an

error

amplifier,

precision reference, line undervoltage lockout, cycle-

by-cycle current limit, slope compensation, soft-start,

external

synchronization

capability,

and

thermal

shutdown. The LM5022-Q1 is available in the 10-pin

VSSOP package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM5022-Q1

VSSOP (10)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application