採用 4-mm x 6-mm x 1.8-mm 封裝的 3.6-V 至 36-V 輸入、1-V 至 6-V 輸出、2-A 降壓模組 Save board space, simplify design and speed time to market with an integrated-inductor power module.

TPSM33615

現行

3-V 至 36-V 輸入、1 至 15-V 輸出、1.5-A 同步降壓電源模組 Smaller design with an integrated-inductor power module.

LM2675

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

1

Vin (min) (V)

6.5

Vin (max) (V)

40

Switching frequency (min) (kHz)

260

Switching frequency (max) (kHz)

260

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

1.23

Vout (max) (V)

37

Iq (typ) (µA)

2500

Duty cycle (max) (%)

95

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

1

Vin (min) (V)

6.5

Vin (max) (V)

40

Switching frequency (min) (kHz)

260

Switching frequency (max) (kHz)

260

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

1.23

Vout (max) (V)

37

Iq (typ) (µA)

2500

Duty cycle (max) (%)

95

PDIP (P)

8

92.5083 mm² 9.81 x 9.43

SOIC (D)

8

29.4 mm² 4.9 x 6

WSON (NHN)

16

25 mm² 5 x 5

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

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

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.

A family of standard inductors for use with the LM2675 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

Other features include ±1.5%-tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50-µA standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.

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.

A family of standard inductors for use with the LM2675 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

Other features include ±1.5%-tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50-µA standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.

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	類型	標題		日期
*	Data sheet	LM2675 SIMPLE SWITCHER® Power Converter High Efficiency 1-A Step-Down Voltage Regulator datasheet (Rev. F)	PDF \| HTML	2016年 6月 29日
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	2024年 3月 25日
	Technical article	How to increase system reliability and simplify design using DC/DC converters	PDF \| HTML	2016年 6月 13日
	Technical article	The importance of accurate switching frequency and current limit when selecting bu	PDF \| HTML	2016年 4月 19日
	Technical article	Advantages of leaded packages in robust industrial designs	PDF \| HTML	2016年 3月 8日
	Application note	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		2014年 9月 12日
	Application note	AN-1187 Leadless Leadframe Package (LLP) (Rev. R)		2013年 5月 7日
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		2013年 4月 24日
	User guide	LM2675 5.0EVAL 1A Step-Down High-Efficiency SIMPLE SWITCHER Eval Brd (Rev. C)		2013年 4月 24日
	Application note	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		2013年 4月 23日
	Application note	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		2013年 4月 23日
	Application note	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		2013年 4月 23日
	Application note	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		2013年 4月 23日
	Application note	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		2013年 4月 23日
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		2013年 4月 23日
	Application note	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		2013年 4月 23日
	Application note	AN-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E)		2013年 4月 23日
	Application note	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		2013年 4月 23日
	Application note	Simple Techniques Minimize Cross-Coupling in Distributed Power Systems		2007年 3月 21日
	Application note	Input and Output Capacitor Selection		2005年 9月 19日
	More literature	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		2005年 7月 12日
	Application note	AN-643 EMI/RFI Board Design (Rev. B)		2004年 5月 3日

設計與開發

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開發板

LM2675-5.0EVAL — SIMPLE SWITCHER 電源轉換器高效 1A 降壓電壓穩壓器評估模組

Amp Step-Down High-Efficency SIMPLE SWITCHER Evaluation Board.

The LM2675 SIMPLE SWITCHER step-down regulator provides all the active functions for a step-down regulator capable of driving a 1A load. Switching frequency is internally set to 260 kHz, allowing smaller-sized filter components than (...)

使用指南: PDF