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LMR14020-Q1

SNVSAG4 – NOVEMBER 2015

1 Features

3 Description

The LMR14020-Q1 is a 40 V, 2 A step down

1

•

Qualified for Automotive Applications

regulator with an integrated high-side MOSFET. With

•

AEC-Q100 Qualified With the Following Results:

a wide input range from 4 V to 40 V, it’s suitable for

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

various applications from industrial to automotive for

Ambient Operating Temperature Range

power conditioning from unregulated sources. The

- Device HBM ESD Classification Level H1C

regulator’s quiescent current is 40 µA in Sleep-mode,

- Device CDM ESD Classification Level C4A

which is suitable for battery powered systems. An

ultra-low 1

μA current in shutdown mode can further

•

4 V to 40 V Input Range

prolong battery life. A wide adjustable switching

•

2 A Continuous Output Current

frequency range allows either efficiency or external

•

Ultra-low 40 µA Operating Quiescent Current

component size to be optimized. Internal loop

compensation means that the user is free from the

•

90 m

Ω High-Side MOSFET

tedious task of loop compensation design. This also

•

Minimum Switch-On Time: 75 ns

minimizes the external components of the device. A

•

Current Mode Control

precision

enable

input

allows

simplification

of

•

Adjustable Switching Frequency from 200 kHz to

regulator control and system power sequencing. The

device also has built-in protection features such as

2.5 MHz

cycle-by-cycle current limit, thermal sensing and

•

Frequency Synchronization to External Clock

shutdown due to excessive power dissipation, and

•

Spread Spectrum Option for Reduced EMI

output overvoltage protection.

•

Internal Compensation for Ease of Use

The LMR14020-Q1 is available in an 8-pin HSOIC

•

High Duty Cycle Operation Supported

package with exposed pad for low thermal resistance

•

Precision Enable Input

Device Information (1)

•

1 µA Shutdown Current

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

External Soft-start

LMR14020SQDDARQ1

HSOIC (8)

4.89 mm x 3.90 mm

•

Thermal, Overvoltage and Short Protection

LMR14020SSQDDARQ1

HSOIC (8)

4.89 mm x 3.90 mm

•

8-Pin HSOIC with PowerPAD™ Package

(Spread Spectrum)

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

2 Applications

the end of the datasheet.

•

Automotive Battery Regulation

•

Industrial Power Supplies

•

Telecom and Datacom Systems

•

General Purpose Wide Vin Regulation

space

Simplified Schematic

Efficiency vs Output Current

1

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.