LMR23610-Q1 Datasheet, PDF (1/36 Pages) Texas Instruments – SIMPLE SWITCHER 36 V, 1 A Synchronous Step-Down Converter

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LMR23610-Q1
SNVSAR4 – DECEMBER 2016
LMR23610-Q1 SIMPLE SWITCHER^® 36 V, 1 A Synchronous Step-Down Converter
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
• 1 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 Mode
• Frequency Synchronization to External Clock
• 75 µA Quiescent Current at No Load
• Soft-Start into a Pre-Biased Load
• High Duty Cycle Operation Supported
• Output Short-Circuit Protection with Hiccup Mode
• 8-Pin HSOIC with PowerPAD™ Package Options
2 Applications
• Automotive Battery Regulation
• Industrial Power Supplies
• Telecom and Datacom Systems
• General Purpose Wide Vin Regulation
space
Simplified Schematic
VIN up to 36 V
CIN
VIN
EN/SYNC
BOOT
AGND
SW
CVCC
VCC
FB
PGND
CBOOT _L
RFBT
RFBB
VOUT
COUT
3 Description
The LMR23610-Q1 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 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.
An extended family is available in 1.5 A (LMR23615-
Q1), 2.5 A (LMR23625-Q1) and 3 A (LMR23630-Q1)
load current options in pin-to-pin compatible
packages 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)
LMR23610AQDDARQ1 HSOIC (8)
4.9 mm x 3.9 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Load, V_IN = 12 V
100
90
80
70
60
50
40
0.0001
0.001
0.01
I_OUT (A)
V_OUT = 5 V
V_OUT = 3.3 V
0.1
1
D000
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. PRODUCTION DATA.