LM3691

AKTIV

Hochpräziser DC/DC-Abwärtswandler für tragbare Anwendungen im Miniaturformat 1A

Jetzt bestellen

Datenblatt

document-pdfAcrobat LM3691 High-Accuracy, Miniature 1-A Step-Down DC-DC Converter for Portable Applications datasheet (Rev. J) (Englisch) PDF | HTML

Eine neuere Version dieses Produkts ist verfügbar

open-in-new

Alternativen vergleichen

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung

TPS62860

AKTIV

Abwärtswandler mit extrem niedrigem IQ mit I2C/VSEL-Schnittstelle, 1,75 V bis 5,5 V, 0,6 A Smaller solution size and low quiescent current with I2C/VSEL interface

LM3691

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

5.5

Vin (min) (V)

2.3

Vout (max) (V)

3.3

Vout (min) (V)

0.75

Features

Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification

Control mode

Voltage mode

Operating temperature range (°C)

-30 to 85

Iq (typ) (A)

0.000064

Duty cycle (max) (%)

100

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

5.5

Vin (min) (V)

2.3

Vout (max) (V)

3.3

Vout (min) (V)

0.75

Features

Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification

Control mode

Voltage mode

Operating temperature range (°C)

-30 to 85

Iq (typ) (A)

0.000064

Duty cycle (max) (%)

100

DSBGA (YZR)

6

2.1875 mm² 1.75 x 1.25

Input Voltage: 2.3 V to 5.5 V
Output Voltage: 0.75 V to 3.3 V
±1% DC Output Voltage Precision
4-MHz Switching Frequency
64-μA (typical) Quiescent Current in ECO Mode
1-A Maximum Load Capability
Automatic ECO/PWM Mode Switching
MODE Pin to Select ECO/Forced PWM Mode
Current Overload and Thermal Shutdown Protections
Only Three Tiny Surface-Mount External Components Required (Solution Size Less Than 15 mm²)

Input Voltage: 2.3 V to 5.5 V
Output Voltage: 0.75 V to 3.3 V
±1% DC Output Voltage Precision
4-MHz Switching Frequency
64-μA (typical) Quiescent Current in ECO Mode
1-A Maximum Load Capability
Automatic ECO/PWM Mode Switching
MODE Pin to Select ECO/Forced PWM Mode
Current Overload and Thermal Shutdown Protections
Only Three Tiny Surface-Mount External Components Required (Solution Size Less Than 15 mm²)

The LM3691 step-down DC-DC converter is optimized for powering ultra-low-voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It provides up to 1-A load current over an input voltage range from 2.3 V to 5.5 V. There are several different fixed voltage output options available.

The LM3691 has a mode-control pin that allows the user to select Forced PWM mode or ECO mode that changes modes between gated PWM mode and PWM automatically, depending on the load. In ECO mode, the device offers superior efficiency and very low I_Q under light load conditions. ECO mode extends the battery life through reduction of the quiescent current during light load conditions and system standby.

The LM3691 is available in a 6-pin DSBGA package. Only three external surface-mount components, a
1-μH inductor, a 4.7-μF input capacitor, and a 4.7-μF output capacitor, are required.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3691 step-down DC-DC converter is optimized for powering ultra-low-voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It provides up to 1-A load current over an input voltage range from 2.3 V to 5.5 V. There are several different fixed voltage output options available.

The LM3691 has a mode-control pin that allows the user to select Forced PWM mode or ECO mode that changes modes between gated PWM mode and PWM automatically, depending on the load. In ECO mode, the device offers superior efficiency and very low I_Q under light load conditions. ECO mode extends the battery life through reduction of the quiescent current during light load conditions and system standby.

The LM3691 is available in a 6-pin DSBGA package. Only three external surface-mount components, a
1-μH inductor, a 4.7-μF input capacitor, and a 4.7-μF output capacitor, are required.

For all available packages, see the orderable addendum at the end of the data sheet.

filter

Andere DC/DC-Wandler suchen

Herunterladen Video mit Transkript ansehen Video

Technische Dokumentation

star

=Von TI ausgewählte Top-Empfehlungen für dieses Produkt

Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.

Alle anzeigen 9

Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Data sheet	LM3691 High-Accuracy, Miniature 1-A Step-Down DC-DC Converter for Portable Applications datasheet (Rev. J)	PDF \| HTML	17 Dez 2015
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25 Mär 2024
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24 Apr 2013
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23 Apr 2013
	Application note	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23 Apr 2013
	Application note	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23 Apr 2013
	More literature	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		12 Jul 2005
	Application note	AN-643 EMI/RFI Board Design (Rev. B)		03 Mai 2004

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM3691TL-1.8EV — LM3691TL-1.8-Evaluierungsplatine

The LM3691 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It provides up to 1A load current, over an input voltage range from 2.3V to 5.5V. There are several different fixed voltage output options available.

The (...)

Benutzerhandbuch: PDF