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LMR23630ADDA Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza LMR23630ADDA
Descripción Electrónicos  SIMPLE SWITCHER 36 V, 3 A Synchronous Step-Down Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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LMR23630ADDA Datasheet(HTML) 1 Page - Texas Instruments

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IOUT (A)
0.0001
0.001
0.01
0.1
1
10
40
50
60
70
80
90
100
D001
VOUT = 5 V
VOUT = 3.3 V
BOOT
SW
L
CBOOT
FB
VIN
VIN up to 36 V
PGND
COUT
EN/SYNC
CIN
VCC
AGND
VOUT
CVCC
RFBT
RFBB
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
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
SNVSAH2B – DECEMBER 2015 – REVISED APRIL 2017
LMR23630 SIMPLE SWITCHER® 36 V, 3 A Synchronous Step-Down Converter
1
1 Features
1
4.5 V to 36 V Input Range
3 A Continuous Output Current
Integrated Synchronous Rectification
Current Mode Control
Minimum Switch-On Time: 60 ns
Internal Compensation for Ease of Use
400 kHz Switching Frequency With PFM and
Forced PWM Mode Options
Frequency Synchronization to External Clock
75 µA Quiescent Current at No Load for PFM
Option
Soft-Start into a Pre-Biased Load
High Duty Cycle Operation Supported
Precision Enable Input
Output Short-Circuit Protection with Hiccup Mode
Thermal Protection
8-Pin HSOIC with PowerPAD™ Package
2 Applications
Automotive Battery Regulation
Industrial Power Supplies
Telecom and Datacom Systems
General Purpose Wide Vin Regulation
3 Description
The LMR23630 SIMPLE SWITCHER® is an easy to
use 36 V, 3 A synchronous step down regulator. With
a wide input range from 4.5 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. An ultra-low 2
μA shutdown current can further prolong battery life.
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) and 2.5 A (LMR23625) 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)
LMR23630A
HSOIC (8)
4.89 mm x 3.90 mm
LMR23630AF
(FPWM Option)
HSOIC (8)
4.89 mm x 3.90 mm
(1) For detail part numbers for all available different options, see
the orderable addendum at the end of the data sheet.
Simplified Schematic
Efficiency vs Load
VIN = 12 V, PFM Option


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