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LM2675MX-3.3/NOPB 数据手册 - TI（德州仪器）
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TI（德州仪器）
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稳压芯片
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SOIC-8
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TEXAS INSTRUMENTS LM2675MX-3.3/NOPB 芯片, 直流/直流转换器, 降压, 260KHZ, SOIC-8 新
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LM2675MX-3.3/NOPB数据手册
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Copyright © 2016, Texas Instruments Incorporated
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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.
LM2675
SNVS129F –MAY 2004–REVISED JUNE 2016
LM2675 SIMPLE SWITCHER
®
Power Converter High Efficiency
1-A Step-Down Voltage Regulator
1
1 Features
1
• Efficiency up to 96%
• Available in 8-Pin SOIC, PDIP, and 16-Pin WSON
Package
• Requires only 5 External Components
• 3.3-V, 5-V, 12-V, and Adjustable Output Versions
• Adjustable Version Output Voltage Range: 1.21 V
to 37 V
• ±1.5% Maximum Output Voltage Tolerance Over
Line and Load Conditions
• Ensured 1-A Output Load Current
• Wide Input Voltage Range: 8 V to 40 V
• 260-kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability, Low-Power Standby
Mode
• Thermal Shutdown and Current Limit Protection
2 Applications
• Simple High Efficiency (>90%) Step-Down (Buck)
Regulator
• Efficient Preregulator for Linear Regulators
• Positive-to-Negative Converter
3 Description
The LM2675 series of regulators are monolithic
integrated DC-DC converter circuits built with a
LMDMOS process. These regulators provide all the
active functions for a step-down (buck) switching
regulator, capable of driving a 1-A load current with
excellent line and load regulation. These devices are
available in fixed output voltages of 3.3 V, 5 V, 12 V,
and an adjustable output version.
Requiring a minimum number of external
components, these regulators are simple to use and
include patented internal frequency compensation
and a fixed frequency oscillator.
The LM2675 series operates at a switching frequency
of 260 kHz, thus allowing smaller-sized filter
components than what would be needed with lower
frequency switching regulators. Because of its very
high efficiency (>90%), the copper traces on the
printed-circuit board are the only heat sinking needed.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
LM2675
SOIC (8) 5.00 mm × 6.20 mm
PDIP (8) 10.16 mm × 6.60 mm
WSON (16) 5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
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