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LM5150

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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.

LM5150-Q1

SNVSAP6 – SEPTEMBER 2017

1

1 Features

1

•

AEC-Q100 Qualified:

–

Device Temperature Grade 1: –40°C to

+125°C Ambient Operating Temperature

Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C4B

•

Wide VIN Input Range From 1.5 V to 42 V When

VOUT

≥ 5 V (65-V Absolute Maximum)

•

•

•

Four Programmable Output Voltage Options and

Two Selectable Configurations

–

6.8 V, 7.5 V, 8.5 V, or 10.5 V

–

Start-Stop or E-Call Configurations

•

Adjustable Switching Frequency From 220 kHz to

2.3 MHz

•

Automatic Wake-Up and Standby Mode Transition

•

Optional Clock Synchronization

•

Boost Status Indicator

•

1.5-A Peak MOSFET Gate Driver

•

Adjustable Cycle-by-Cycle Current Limit

•

Thermal Shutdown

•

16-Pin WQFN With Wettable Flanks

•

Create a Custom Design Using the LM5150-Q1

With the WEBENCH® Power Designer

2 Applications

•

Automotive Start-Stop System

•

Automotive Emergency Call System

•

Battery-Powered Boost Converters

3 Description

The LM5150-Q1 device is a wide input range

automatic boost controller. The device is suitable for

use as a pre-boost converter which maintains the

output

voltage

from

a

vehicle

battery

during

automotive cranking or from a back-up battery during

the loss of vehicle battery.

The LM5150-Q1 switching frequency is programmed

by a resistor from 220 kHz to 2.3 MHz. Fast switching

(

≥ 2.2-MHz) minimizes AM band interference and

allows for a small solution size and fast transient

response.

when the input or output voltage is above the preset

standby thresholds and automatically wakes up when

the output voltage drops below the preset wake-up

threshold.

mode to extend battery life at light load. A single

resistor programs the target output regulation voltage

as well as the configuration. Additional features

include low shutdown current, boost status indicator,

adjustable cycle-by-cycle current limit, and thermal

shutdown.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM5150-Q1

WQFN (16)

4.00 mm × 4.00 mm

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

the end of the data sheet.

Typical Application Circuit