LMR23610 Datasheet, PDF (1/9 Pages) Texas Instruments – SIMPLE SWITCHER 36 V, 1 A Synchronous Step-Down Converter

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LMR23610
SNVSAH4 – DECEMBER 2015
LMR23610 SIMPLE SWITCHER^® 36 V, 1 A Synchronous Step-Down Converter
1 Features
•1 4 V to 36 V Input Range
• 1 A Continuous Output Current
• Integrated Synchronous Rectification
• Current Mode Control
• Minimum Switch-On Time: 60 ns
• 400 kHz Switching Frequency With PFM Mode
• Frequency Synchronization to External Clock
• Internal Compensation for Ease of Use
• 75 µA Quiescent Current at No Load
• Soft-Start into a Pre-Biased Load
• High Duty Cycle Operation Supported
• Precision Enable Input
• Output Short-Circuit Protection with Hiccup Mode
• Thermal and Overvoltage Protection
• 8-Pin HSOIC with PowerPAD™ Package
2 Applications
• Automotive Battery Regulation
• Industrial Power Supplies
• Telecom and Datacom Systems
• General Purpose Wide Vin Regulation
VIN up to 36 V
CIN
C1
Simplified Schematic
VIN
EN/SYNC
BOOT
AGND
SW
VCC
FB
PGND
CBOOT _L
RFBT
RFBB
VOUT
COUT
3 Description
The LMR23610 SIMPLE SWITCHER^® is an easy to
use 36 V, 1 A synchronous step down regulator. With
a wide input range from 4 V to 36 V, it’s 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. The regulator’s quiescent current is 75 µA
makes it suitable for battery powered systems. An
ultra-low 2 µA current in shutdown mode 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 of the device. An extended
family is available in 2.5 A and 3 A 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.
The LMR23610 is available in an 8-pin HSOIC
package with exposed pad for low thermal resistance.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMR23610A
HSOIC (8)
4.89 mm x 3.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Load
Vout = 5 V
100
90
80
70
60
50
40
0.0001
0.001
0.01
I_OUT (A)
PFM, V_IN = 12 V
PFM, V_IN = 24 V
0.1
12
D001
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.