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LED-Hintergrundbeleuchtungstreiber

LM3630A

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LM3630A – hocheffizienter Treiber für zwei weiße LED-Ketten

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LM3630A

AKTIV
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Produktdetails

Number of channels 2 Vin (min) (V) 2.3 Vin (max) (V) 5.5 Vout (min) (V) 12 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1120 Duty cycle (max) (%) 94 LED current per channel (mA) 28.5 Peak efficiency (%) 87 Topology Boost Features I2C control, OVP, PWM control, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.3 Vin (max) (V) 5.5 Vout (min) (V) 12 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1120 Duty cycle (max) (%) 94 LED current per channel (mA) 28.5 Peak efficiency (%) 87 Topology Boost Features I2C control, OVP, PWM control, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFQ) 12 2.52000000000000018 mm² 1.8 x 1.4000000000000001
  • Drives up to 2 Strings of 10 Series LEDs
  • Wide 2.3-V to 5.5-V Input Voltage Range
  • Up to 87% Efficient
  • 8-bit I2C-Compatible Programmable Exponential or Linear Brightness Control
  • PWM Brightness Control for CABC Operation
  • Independent Current Control per String
  • True Shutdown Isolation for LEDs
  • Internal Soft-Start Limits Inrush Current
  • Adaptive Headroom
  • Programmable 16-V/24-V/32-V/40-V Overvoltage Protection
  • Selectable Boost Frequency of 500 kHz or 1 MHz with Optionally Additional Offset
  • Low Profile 12-Pin DSBGA Package
  • Solution Size 32 mm²
  • Drives up to 2 Strings of 10 Series LEDs
  • Wide 2.3-V to 5.5-V Input Voltage Range
  • Up to 87% Efficient
  • 8-bit I2C-Compatible Programmable Exponential or Linear Brightness Control
  • PWM Brightness Control for CABC Operation
  • Independent Current Control per String
  • True Shutdown Isolation for LEDs
  • Internal Soft-Start Limits Inrush Current
  • Adaptive Headroom
  • Programmable 16-V/24-V/32-V/40-V Overvoltage Protection
  • Selectable Boost Frequency of 500 kHz or 1 MHz with Optionally Additional Offset
  • Low Profile 12-Pin DSBGA Package
  • Solution Size 32 mm²

The LM3630A is a current-mode boost converter which supplies the power and controls the current in up to two strings of 10 LEDs per string. Programming is done over an I2C-compatible interface. The maximum LED current is adjustable from 5 mA to 28.5 mA. At any given maximum LED current the LED brightness is further adjusted with 256 exponential or linear dimming steps. Additionally, pulsed width modulation (PWM) brightness control can be enabled allowing for LED current adjustment by a logic level PWM signal.

The boost switching frequency is programmable at 500 kHz for low switching loss performance or 1 MHz to allow the use of tiny low-profile inductors. A setting for a 10% offset of these frequencies is available. Overvoltage protection is programmable at 16 V,
24 V, 32 V, or 40 V to accommodate a wide variety of LED configurations and Schottky diode/output capacitor combinations.

The device operates over a 2.3-V to 5.5-V operating voltage range and –40°C to +85°C ambient temperature range. The LM3630A is available in an ultra-small 12-bump DSBGA package.

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

The LM3630A is a current-mode boost converter which supplies the power and controls the current in up to two strings of 10 LEDs per string. Programming is done over an I2C-compatible interface. The maximum LED current is adjustable from 5 mA to 28.5 mA. At any given maximum LED current the LED brightness is further adjusted with 256 exponential or linear dimming steps. Additionally, pulsed width modulation (PWM) brightness control can be enabled allowing for LED current adjustment by a logic level PWM signal.

The boost switching frequency is programmable at 500 kHz for low switching loss performance or 1 MHz to allow the use of tiny low-profile inductors. A setting for a 10% offset of these frequencies is available. Overvoltage protection is programmable at 16 V,
24 V, 32 V, or 40 V to accommodate a wide variety of LED configurations and Schottky diode/output capacitor combinations.

The device operates over a 2.3-V to 5.5-V operating voltage range and –40°C to +85°C ambient temperature range. The LM3630A is available in an ultra-small 12-bump DSBGA package.

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

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Typ Titel Datum
* Data sheet LM3630A High-Efficiency Dual-String White LED Driver datasheet (Rev. B) PDF | HTML 27 Okt 2015
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020

Design und Entwicklung

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

Evaluierungsplatine

LM3630EVM — LM3630EVM-Evaluierungsmodul für hocheffizienten zweistringigen weißen LED-Treiber

The LM3630EVM is a current mode boost converter 2which supplies the power and USB interface control for two strings of 10 LEDs per string. Max LED current is adjustable from 5 mA to 28.5 mA additional LED brightness further adjustable with 256 exponential or linear dimming steps.
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Treiber oder Bibliothek

LM3630ASW-LINUX — Linux-Treiber für LM3630A

The Linux driver supports the LM3630A White LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the backlight sub-system.

 

Linux Mainline Status

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

Supported Devices:

  • lm3630a

 

Linux Source Files

The (...)

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Referenzdesigns

TIDA-00373 — Referenzdesign für Hintergrundbeleuchtung und intelligente Beleuchtungssteuerung durch Umgebungslich

This system conserves power and extends backlight life by dynamically adjusting the backlight brightness relative to the environment's ambient light.  A capacitive proximity sensor wakes up the system when a user is close to save even more power.

 

Watch related videos about Sensing NOW.

Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00754 — Referenzdesign für intelligente & Hintergrundbeleuchtungssteuerung durch Umgebungslicht & störfesten

This reference design demonstrates a proximity sensor implementation for HMI applications. The design can be used for backlight control that dynamically adjusts LCD backlight brightness relative to environment ambient light levels. A capacitive proximity sensor saves power and increases LCD (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00220 — Referenzdesign für kapazitiv basierte menschliche Personen-Näherungserkennung für Aktivierung & Unte

This reference design uses our capacitive-to-digital converter technology to provide a high-precision method to wake up systems when human interaction occurs. TIDA-00220 demonstrates techniques for an alternative sensor design, environmental compensation and electromagnetic interference protection.
Design guide: PDF
Schaltplan: PDF
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DSBGA (YFQ) 12 Optionen anzeigen
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Bestellen & Qualität

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  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
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  • Montagestandort

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