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LMR23630

SNVSAH2 – DECEMBER 2015

1 Features

3 Description

1

•

4 V to 36 V Input Range

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

•

3 A Continuous Output Current

a wide input range from 4 V to 36 V, it’s suitable for

•

Integrated Synchronous Rectification

various applications from industrial to automotive for

power conditioning from unregulated sources. Peak

•

Internal Compensation for Ease of Use

current mode control is employed to achieve simple

•

400 kHz Switching Frequency With PFM and

control loop compensation and cycle-by-cycle current

Forced PWM Mode Options

limiting. The regulator’s quiescent current is 75

μA

•

Frequency Synchronization to External Clock

makes it suitable for battery powered systems. An

ultra-low 2

μA current in shutdown mode can further

•

75 µA Quiescent Current at No Load

prolong battery life. The switching frequency options

•

Minimum Switch-On Time: 60 ns

allow either efficiency or solution size to be optimized.

•

High Duty Cycle Operation Supported

Internal loop compensation means that the user is

•

Precision Enable Input

free from the tedious task of loop compensation

design. This also minimizes the external components

•

Output Short-Circuit Protection with Hiccup Mode

of the device. The device has option for fixed

•

Thermal and Overvoltage Protection

frequency

FPWM

mode

to

eliminate

frequency

•

8-Pin HSOIC with PowerPAD™ Package

variation to minimize EMI. An extended family is

available in 1 A and 2 A load current options in pin to

pin

compatible

package

which

allows

simple,

2 Applications

optimum PCB layout. A precision enable input allows

•

Automotive Battery Regulation

simplification of regulator control and system power

•

Industrial Power Supplies

sequencing. Protection features include cycle-by-

cycle

current

limit,

hiccup

mode

short

circuit

•

Telecom and Datacom Systems

protection and thermal shutdown due to excessive

•

Battery Powered System

power dissipation.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMR23630A

HSOIC (8)

4.89 mm x 3.90 mm

LMR23630AF

HSOIC (8)

4.89 mm x 3.90 mm

(FPWM Option)

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

the end of the data sheet.

Simplified Schematic

Efficiency vs Load

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. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.