LM22670TJ-ADJ/NOPB ,3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Freq 7-TO-263 -40 to 125Features 3 DescriptionThe LM22670 switching regulator provides all of the1• Wide Input Voltage Rang ..
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LM22671MR-ADJ/NOPB ,500mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Adjustable Frequency 8-SO PowerPAD -40 to 125Features 3 DescriptionThe LM22671 switching regulator provides all of the1• Wide Input Voltage Rang ..
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LM4040D10IDBZR ,10-V Precision Micropower Shunt Voltage Reference, 1% accuracy
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LM4040D20IDBZR ,2.048-V Precision Micropower Shunt Voltage Reference, 1% accuracy 3-SOT-23 -40 to 85
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LM22670MRX-ADJ/NOPB-LM22670TJ-5.0/NOPB-LM22670TJ-ADJ/NOPB
3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Freq
SWVIN
VOUT• 100-mΩ N-channel MOSFET SO PowerPAD™-8 and load regulation along with high efficiency(> 90%)Package are featured. Voltage mode control offers short• Output Voltage Options: minimum on-time, allowing the widest ratio between
-ADJ (Outputsas Lowas 1.285V) input and output voltages. Internal loop compensation
-5.0 (Output Fixedto5V) means that the useris free from the tedious taskof
calculating the loop compensation components. Fixed• ±1.5% Feedback Reference Accuracy 5-V output and adjustable output voltage options are• 500-kHz Default Switching Frequency available. The default switching frequencyis setat Adjustable Switching Frequency and 500 kHz, thus allowing for small external components
Synchronization and good transient response. In addition, the
frequency can be adjusted overa rangeof 200 kHz• –40°Cto 125°C Operating Junction Temperature to1 MHz witha single external resistor. The internalRange oscillator can be synchronizedtoa system clockorto• Precision Enable Pin the oscillatorof another regulator.A precision enable Integrated Boot-Strap Diode input allows simplification of regulator control and
system power sequencing.In shutdown mode the• Integrated Soft-Start regulator draws only 25 µA (typical). Builtin soft-start• Fully WEBENCH® Enabled (500 µs, typical) saves external components. The• LM22670-Q1isan Automotive-Grade Product LM22670 device also has built-in thermal shutdown,
thatis AEC-Q100 Grade1 Qualified (–40°Cto and current limiting to protect against accidental
+125°C Operating Junction Temperature) overloads.
The LM22670 device is a member of Texas
2 Applications Instruments' SIMPLE SWITCHER® family. The
SIMPLE SWITCHER® concept provides for an easy-• Industrial Control
to-use complete design usinga minimum numberof• Telecom and Datacom Systems external components and theTI WEBENCH design• Embedded Systems tool. TI's WEBENCH tool includes features such as Conversions from Standard 24-V, 12-V and 5-V external component calculation, electrical simulation,
thermal simulation, and Build-It boards for easyInput Rails
design-in.
Simplified Application Schematic
Device Information(1)
