LM3642

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Synchroner Boost-LED-Blitztreiber, 1,5 A, mit Highside-Strom

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Datenblatt

document-pdfAcrobat LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source datasheet (Rev. H) (Englisch) PDF | HTML

LM3642

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Input voltage type

DC/DC

Topology

Boost, current mode

Vin (min) (V)

2.5

Vin (max) (V)

5.5

Vout (max) (V)

5.5

Vout (min) (V)

2.5

Iout (max) (A)

1.5

Iq (typ) (mA)

0.75

Features

Input/Output Isolation, OVP, Over Current Protection, Synchronous Rectification

Operating temperature range (°C)

-40 to 85

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

Input voltage type

DC/DC

Topology

Boost, current mode

Vin (min) (V)

2.5

Vin (max) (V)

5.5

Vout (max) (V)

5.5

Vout (min) (V)

2.5

Iout (max) (A)

1.5

Iq (typ) (mA)

0.75

Features

Input/Output Isolation, OVP, Over Current Protection, Synchronous Rectification

Operating temperature range (°C)

-40 to 85

Dimming method

Analog, PWM

Number of channels

1

Rating

Catalog

DSBGA (YZR)

9

3.0625 mm² 1.75 x 1.75

1.5-A High-Side Current Source for Single LED
> 85% Efficiency in Torch Mode (at 100 mA) and
Flash Mode (at 1 A to 1.5 A)
Accurate Programmable Flash LED Current from
93 mA to 1.5 A
Accurate Programmable Torch LED Currents:
- 48.4 mA to 375 mA
- 24 mA to 187 mA (LT option)
Small Solution Size: < 20 mm²
Soft-Start Operation for Battery Protection
Hardware Strobe Enable
Synchronization Input for RF Power Amplifier
Pulse Events
V_IN Flash Monitor Optimization
400-kHz I²C-Compatible Interface
0.5-mm Pitch, 9-Bump DSBGA

1.5-A High-Side Current Source for Single LED
> 85% Efficiency in Torch Mode (at 100 mA) and
Flash Mode (at 1 A to 1.5 A)
Accurate Programmable Flash LED Current from
93 mA to 1.5 A
Accurate Programmable Torch LED Currents:
- 48.4 mA to 375 mA
- 24 mA to 187 mA (LT option)
Small Solution Size: < 20 mm²
Soft-Start Operation for Battery Protection
Hardware Strobe Enable
Synchronization Input for RF Power Amplifier
Pulse Events
V_IN Flash Monitor Optimization
400-kHz I²C-Compatible Interface
0.5-mm Pitch, 9-Bump DSBGA

The LM3642 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing Flash current up to 1.5 A. An adaptive regulation method ensures the current source remains in regulation and maximizes efficiency.

The LM3642 is controlled via an I²C-compatible interface. Features include a hardware flash enable (STROBE) allowing a logic input to trigger the flash pulse as well as a TX input which forces the flash pulse into a low-current Torch Mode, allowing for synchronization to RF power amplifier events or other high-current conditions.

The 4-MHz switching frequency, overvoltage protection and adjustable current limit settings allow the use of tiny, low-profile inductors and (10-µF) ceramic capacitors. The device is available in a small 9-bump DSBGA package and operates over the −40°C to 85°C temperature range.

The LM3642 is a 4-MHz fixed-frequency synchronous boost converter plus 1.5-A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing Flash current up to 1.5 A. An adaptive regulation method ensures the current source remains in regulation and maximizes efficiency.

The LM3642 is controlled via an I²C-compatible interface. Features include a hardware flash enable (STROBE) allowing a logic input to trigger the flash pulse as well as a TX input which forces the flash pulse into a low-current Torch Mode, allowing for synchronization to RF power amplifier events or other high-current conditions.

The 4-MHz switching frequency, overvoltage protection and adjustable current limit settings allow the use of tiny, low-profile inductors and (10-µF) ceramic capacitors. The device is available in a small 9-bump DSBGA package and operates over the −40°C to 85°C temperature range.

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Alle anzeigen 6

	Typ	Titel		Datum
*	Data sheet	LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source datasheet (Rev. H)	PDF \| HTML	04 Sep 2015
	Application note	No Boost Inductor Design with LM364x for Long-Time Focusing in Camera Module	PDF \| HTML	16 Feb 2022
	White paper	Common LED Functions and LED Driver Design Considerations		21 Sep 2020
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Application note	LED Flash-Protection Features		23 Aug 2017
	EVM User's guide	LM3642 Evaluation Board (Rev. A)		30 Apr 2013

Design und Entwicklung

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Evaluierungsplatine

LM3642TL-LTEVM — LM3642 1,5A synchroner Aufwärts-LED-Flash-Treiber mit High-Side-Strom-Evaluierungsmodul-Platine

1.5A Synchronous Boost LED Flash Driver w/ High-Side Current Evaluation Module Board

The LM3642TL-LT is a 4MHz fixed-frequency synchronous boost converter plus 1.5A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Evaluierungsplatine

LM3642TLEVM — LM3642 1,5A synchroner Aufwärts-LED-Flash-Treiber mit High-Side-Strom-Evaluierungsmodul-Platine

1.5A Synchronous Boost LED Flash Driver w/ High-Side Current Evaluation Module Board

The LM3642TL is a 4MHz fixed-frequency synchronous boost converter plus 1.5A constant current driver for a high-current white LED. The high-side current source allows for grounded cathode LED operation providing (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Treiber oder Bibliothek

LM3642SW-LINUX — Linux-Treiber für LM3642

The Linux driver supports the LM3642 LED Flash Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

lm3642

Linux Source Files

The files (...)

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Simulationsmodell

LM3642 Unencrypted PSpice Transient Model Package (Rev. B)

SNVM510B.ZIP (47 KB) - PSpice Model

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Simulationstool

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
DSBGA (YZR)	9	Ultra Librarian

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LM3642

Synchroner Boost-LED-Blitztreiber, 1,5 A, mit Highside-Strom

LM3642

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Linux Mainline Status

Supported Devices:

Linux Source Files

LM3642 Unencrypted PSpice Transient Model Package (Rev. B)

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

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