0.0001

0.001

0.01

0.1

1

10

40

50

60

70

80

90

100

D001

BOOT

SW

L

FB

VIN

PGND

EN/SYNC

VCC

AGND

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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.

LMR23630-Q1

SNVSAR6 – DECEMBER 2016

1

1 Features

1

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified With the Following Results:

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

Ambient Operating Temperature Range

- Device HBM ESD Classification Level H1C

- Device CDM ESD Classification Level C4A

•

4 V to 36 V Input Range

•

3 A Continuous Output Current

•

Integrated Synchronous Rectification

•

Minimum Switch-On Time: 60 ns

•

Internal Compensation for Ease of Use

•

400 kHz Switching Frequency and Adjustable

Switching Frequency Options

•

PFM and Forced PWM Mode Options at Light

Load

•

Frequency Synchronization to External Clock

•

75 µA Quiescent Current at No Load for PFM

Option

•

Power Good Option

•

Soft-Start into a Pre-Biased Load

•

High Duty Cycle Operation Supported

•

Output Short-Circuit Protection with Hiccup Mode

•

8-Pin HSOIC and 12-Pin WSON with

PowerPAD™ Package Options

2 Applications

•

Automotive Battery Regulation

•

Industrial Power Supplies

•

Telecom and Datacom Systems

•

General Purpose Wide Vin Regulation

3 Description

to use 36 V, 3 A synchronous step down regulator.

With a wide input range from 4 V to 36 V, it is

suitable for various applications from industrial to

automotive for power conditioning from unregulated

sources. Peak current mode control is employed to

achieve simple control loop compensation and cycle-

by-cycle current limiting. A quiescent current of 75 μA

makes it suitable for battery powered systems.

Internal loop compensation means that the user is

free from the tedious task of loop compensation

design. This also minimizes the external components.

The device has option for constant frequency FPWM

mode to achieve small output voltage ripple at light

load. An extended family is available in 1 A

(LMR23610-Q1), 1.5 A (LMR23615-Q1) and 2.5 A

(LMR23625-Q1) load current options in pin-to-pin

compatible package which allows simple, optimum

PCB

layout.

A

precision

enable

input

allows

simplification of regulator control and system power

sequencing. Protection features include cycle-by-

cycle

current

limit,

hiccup

mode

short

circuit

protection and thermal shutdown due to excessive

power dissipation.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMR23630AQDDARQ1

HSOIC (8)

4.9 mm x 3.9 mm

LMR23630AFQDDARQ1

HSOIC (8)

4.9 mm x 3.9 mm

LMR23630QDRRRQ1

(Preview)

WSON (12)

3 mm x 3 mm

LMR23630FQDRRRQ1

(Preview)

WSON (12)

3 mm x 3 mm

LMR23630APQDRRRQ1

(Preview)

WSON (12)

3 mm x 3 mm

(1) For detail part numbers for all available different options, see

the orderable addendum at the end of the data sheet.

Simplified Schematic