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LMR23630AFDDA Datasheet(PDF) 1 Page - Texas Instruments

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Part # LMR23630AFDDA
Description  SIMPLE SWITCHER 36-V, 3-A Synchronous Step-Down Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMR23630AFDDA Datasheet(HTML) 1 Page - Texas Instruments

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BOOT
SW
L
CBOOT
FB
VIN
VIN up to 36 V
PGND
COUT
EN/SYNC
CIN
VCC
AGND
VOUT
CVCC
RFBT
RFBB
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
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
SNVSAH2C – DECEMBER 2015 – REVISED JUNE 2017
LMR23630 SIMPLE SWITCHER® 36-V, 3-A Synchronous Step-Down Converter
1
1 Features
1
4.5-V to 36-V Input Range (HSOIC)
4-V to 36-V Input Range (WSON)
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 and Adjustable
Frequency Options
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 HHSOIC with PowerPAD™ Package
12-Pin WSON Wettable Flanks Package with
PowerPAD™
Create a Custom Design Using the LMR23625
With the WEBENCH® Power Designer
2 Applications
Programmable Logic Controller Power Supply
Multi-Function Printers
HVAC Systems
Industrial Power Supplies
GSM, GPRS Modules for Fleet Management,
Smart Grids, and Security
Simplified Schematic
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 (HSOIC) and 4
V to 36 V (WSON), it is suitable for various industrial
applications 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
the
device
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
an option for constant frequency FPWM mode to
achieve small output-voltage ripple at light load. An
extended
family
(HSOIC)
is
available
in
1-A
(LMR23610) and 2.5-A (LMR23625) load-current
options in a pin-to-pin compatible package allowing
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)
LMR23630
HSOIC (8)
4.89 mm × 3.90 mm
WSON (12)
3.00 mm × 3.00 mm
(1) For detail part numbers for all available different options, see
the orderable addendum at the end of the data sheet.
Efficiency vs Load
VIN = 12 V, PFM Option


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