LM3102

AKTIV

Synchroner 1-MHz-, 2,5-A-Abwärts-Spannungsregler

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Datenblatt

document-pdfAcrobat LM3102 Synchronous 1-MHz, 2.5-A Step-Down Voltage Regulator datasheet (Rev. I) (Englisch) PDF | HTML

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Alternativen vergleichen

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.

LMR33630

AKTIV

Synchroner SIMPLE SWITCHER®-Abwärtswandler (3,8 bis 36 V, 3 A) mit extrem geringer Störaussendung (E Smaller footprint, higher efficiency, lower IQ and lower EMI.

LM3102

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

2.5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

7

Vout (min) (V)

0.8

Features

Enable, Overcurrent protection, Synchronous rectification, Tracking

Control mode

COT with emulated ripple

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

94

Rating

Catalog

Topology

Buck

Iout (max) (A)

2.5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

7

Vout (min) (V)

0.8

Features

Enable, Overcurrent protection, Synchronous rectification, Tracking

Control mode

COT with emulated ripple

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

94

DSBGA (YPA)

28

0.5625 mm² (— mm × — mm)

HTSSOP (PWP)

20

41.6 mm² (6.5 mm × 6.4 mm)

Low Component Count and Small Solution Size
Stable With Ceramic and Other Low-ESR Capacitors
No Loop Compensation Required
High Efficiency at a Light Load by DCM Operation
Prebias Start-Up
Ultra-Fast Transient Response
Programmable Soft-Start
Programmable Switching Frequency up to 1 MHz
Valley Current Limit
Output Overvoltage Protection
Precision Internal Reference for an Adjustable Output Voltage Down to 0.8 V
Thermal Shutdown
Key Specifications
- Input Voltage Range 4.5 V to 42 V
- 2.5-A Output Current
- 0.8 V, ±1.5% Reference
- Integrated Dual N-Channel Main and Synchronous MOSFETs
- Thermally Enhanced HTSSOP-20 Package

Low Component Count and Small Solution Size
Stable With Ceramic and Other Low-ESR Capacitors
No Loop Compensation Required
High Efficiency at a Light Load by DCM Operation
Prebias Start-Up
Ultra-Fast Transient Response
Programmable Soft-Start
Programmable Switching Frequency up to 1 MHz
Valley Current Limit
Output Overvoltage Protection
Precision Internal Reference for an Adjustable Output Voltage Down to 0.8 V
Thermal Shutdown
Key Specifications
- Input Voltage Range 4.5 V to 42 V
- 2.5-A Output Current
- 0.8 V, ±1.5% Reference
- Integrated Dual N-Channel Main and Synchronous MOSFETs
- Thermally Enhanced HTSSOP-20 Package

The LM3102 Synchronously Rectified Buck Converter features all required functions to implement a highly efficient and cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LM3102 does not rely on output capacitor ESR for stability, and is designed to work exceptionally well with ceramic and other very low-ESR output capacitors. The device requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the ON-time. The operating frequency can be externally programmed up to
1 MHz. Protection features include V_CC undervoltage lockout (UVLO), output overvoltage protection, thermal shutdown, and gate drive UVLO. The LM3102 is available in the thermally enhanced HTSSOP-20 package, and LM3102 is also available in a DSBGA low-profile chip-scale package with reduced output current.

The LM3102 Synchronously Rectified Buck Converter features all required functions to implement a highly efficient and cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LM3102 does not rely on output capacitor ESR for stability, and is designed to work exceptionally well with ceramic and other very low-ESR output capacitors. The device requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the ON-time. The operating frequency can be externally programmed up to
1 MHz. Protection features include V_CC undervoltage lockout (UVLO), output overvoltage protection, thermal shutdown, and gate drive UVLO. The LM3102 is available in the thermally enhanced HTSSOP-20 package, and LM3102 is also available in a DSBGA low-profile chip-scale package with reduced output current.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LM3102 Synchronous 1-MHz, 2.5-A Step-Down Voltage Regulator datasheet (Rev. I)	PDF \| HTML	23.01.2018
	Anwendungshinweis	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25.03.2024
	Auswahlhilfe	Power Management Guide 2018 (Rev. R)		25.06.2018
	Whitepaper	Synchronous Rectification in High-Performance Power Converter Design (Rev. A)	PDF \| HTML	15.09.2016
	Anwendungshinweis	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12.09.2014
	Benutzerhandbuch	AN-1646 LM3102 Demonstration Board Reference Design (Rev. A)		29.04.2013
	Anwendungshinweis	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24.04.2013
	Anwendungshinweis	AN-2200 Precision Current Limiting with the LMP8646 and LMZ12003 (Rev. A)		23.04.2013
	Anwendungshinweis	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23.04.2013
	Anwendungshinweis	AN-2218 Precision Current Limiting with the LMP8646 and LM3102 (Rev. A)		23.04.2013
	Anwendungshinweis	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23.04.2013
	Anwendungshinweis	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23.04.2013
	Anwendungshinweis	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23.04.2013
	Anwendungshinweis	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		23.04.2013
	Anwendungshinweis	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23.04.2013
	Anwendungshinweis	Input and Output Capacitor Selection		19.09.2005
	Weitere Dokumente	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		12.07.2005
	Anwendungshinweis	AN-643 EMI/RFI Board Design (Rev. B)		03.05.2004

Design und Entwicklung

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