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LM3509

用于白光 LED 和/或 OLED 顯示屏的高效升壓，具有雙路電流阱; ? Integrated OLED Display Power Supply and LED Driver\n? Drives up to 10 LED’s at 30mA\n? Drives up to 5 LED’s at 20mA and Delivers up to 21V at 40mA\n? Over 90% Efficient\n? 32 Exponential Dimming Steps\n? 0.15% Accurate Current Matching Between Strings\n? Internal Soft-Start Limits Inrush Current\n? True Shutdown Isolation for LED’s\n? Wide 2.7V to 5.5V Input Voltage Range\n? 21V Over-Voltage Protection\n? 1.27MHz Fixed Frequency Operation\n? Low Profile 10-Pin WSON Package (3mm x 3mm x 0.8mm)\n? General Purpose I/O\n? Active Low Hardware Reset;

The LM3509 current mode boost converter offers two separate outputs. The first output (MAIN) is a constant current sink for driving series white LED’s. The second output (SUB/FB) is configurable as a constant current sink for series white LED bias, or as a feedback pin to set a constant output voltage for powering OLED panels.All trademarks are the property of their respective owners.When configured as a dual output white LED bias supply, the LM3509 adaptively regulates the supply voltage of the LED strings to maximize efficiency and insure the current sinks remain in regulation. The maximum current per output is set via a single external low power resistor. An I2C compatible interface allows for independent adjustment of the LED current in either output from 0 to max current in 32 exponential steps. When configured as a white LED + OLED bias supply the LM3509 can independently and simultaneously drive a string of up to 5 white LED’s and deliver a constant output voltage of up to 21V for OLED panels.Output over-voltage protection shuts down the device if VOUT rises above 21V allowing for the use of small sized low voltage output capacitors. The LM3509 is offered in a small 10-pin thermally- enhanced WSON package and operates over the -40°C to +85°C temperature range.

TITexas Instruments

德州儀器美國德州儀器公司

LM3509

OLED Displays with Dual Current Sinks and I2C Compatible Brightness Control

NSCNational Semiconductor (TI)

美國國家半導(dǎo)體美國國家半導(dǎo)體公司

LM3509

High Efficiency Boost for White LED

NSCNational Semiconductor (TI)

美國國家半導(dǎo)體美國國家半導(dǎo)體公司

LM3509

High Efficiency Boost for White LEDs

TI1Texas Instruments

德州儀器美國德州儀器公司

LM3509_08

High Efficiency Boost for White LED

NSCNational Semiconductor (TI)

美國國家半導(dǎo)體美國國家半導(dǎo)體公司

LM3509SD

OLED Displays with Dual Current Sinks and I2C Compatible Brightness Control

NSCNational Semiconductor (TI)

美國國家半導(dǎo)體美國國家半導(dǎo)體公司

LM3509SD

High Efficiency Boost for White LED

NSCNational Semiconductor (TI)

美國國家半導(dǎo)體美國國家半導(dǎo)體公司

LM3509SD/NOPB

High Efficiency Boost for White LEDs

TI1Texas Instruments

德州儀器美國德州儀器公司

LM3509SDE/NOPB

High Efficiency Boost for White LEDs

TI1Texas Instruments

德州儀器美國德州儀器公司

LM3509SDESLASHNOPB

High Efficiency Boost for White LEDs

TI1Texas Instruments

德州儀器美國德州儀器公司

技術(shù)參數(shù)

  • Vin (Min) (V)：

    2.7

  • Vin (Max) (V)：

    5.5

  • Vout (Min) (V)：

    0

  • Vout (Max) (V)：

    21

  • Type：

    Inductive

  • Switching frequency (Max) (kHz)：

    1250

  • LED current per channel (mA)：

    30

  • Peak efficiency (%)：

    88

  • Topology：

    Boost

  • Features：

    I2C Control

  • Operating temperature range (C)：

    -40 to 85

供應(yīng)商型號品牌批號封裝庫存備注價(jià)格
TI
24+
WSON|10
451000
免費(fèi)送樣原盒原包現(xiàn)貨一手渠道聯(lián)系
 詢價(jià)
TI德州儀器
22+
24000
原裝正品現(xiàn)貨,實(shí)單可談,量大價(jià)優(yōu)
 詢價(jià)
TI/德州
2018+
WSON
32500
德州代理承諾銷售原裝正品公司可開正規(guī)17%增值稅票
 詢價(jià)
TI
500
詢價(jià)
NSC
24+
250
詢價(jià)
ns
23+
10-LLP
9823
詢價(jià)
NS
2016+
QFN
6528
只做進(jìn)口原裝現(xiàn)貨!假一賠十!
 詢價(jià)
TI
2020+
WSON10
160
百分百原裝正品 真實(shí)公司現(xiàn)貨庫存 本公司只做原裝 可
 詢價(jià)
NS
23+
QFN
8650
受權(quán)代理!全新原裝現(xiàn)貨特價(jià)熱賣!
 詢價(jià)
NS
25+23+
QFN
52381
絕對原裝正品現(xiàn)貨,全新深圳原裝進(jìn)口現(xiàn)貨
 詢價(jià)
更多LM3509供應(yīng)商 更新時(shí)間2025-7-30 17:06:00

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