位置：L99LD21 > L99LD21詳情
L99LD21中文資料
L99LD21數(shù)據(jù)手冊(cè)規(guī)格書PDF詳情
Features
? AEC-Q100 qualified
? General
– ST SPI communication v4.1
– 5.5 to 24 V Operating battery voltage range
– Load dump protected
– QFN40L 6x6 (wettable flanks) with
exposed pad
– Timeout watchdog and limp home function
– Low standby current
? Boost Section
– Fixed frequency architecture,
programmable by SPI
– Peak current mode control
– Dual phase operation supported
– Input current limitation
– Soft start
– Overvoltage protection (OVP)
– Short feedback failure protection
– Constant voltage control
? Buck section
– Integrated switching mosfets
– Lossless current sensing without need of
external components
– Very accurate LED current setting
programming inductor's peak current and
peak-to-peak current ripple
– Adjustable peak current by SPI
– Adjustable current ripple by SPI
– Integrated PWM generation unit with 10-bit
resolution and phase shift
– Peak current control
– Constant VLED x TOFF architecture
? Protection and diagnostic
– Battery under voltage
– Temperature warning (2 thresholds)
– Overtemperature shutdown
– LED voltage digital feedback through SPI
– Buck outputs short circuit and open load
protection
Description
The L99LD21 is a flexible LED driver, which is
specifically designed for the control of two
independent high brightness LED strings for
automotive front lighting applications. It consists
of a high efficiency monolithic boost controller and
a dual buck converter.
The boost controller integrates a high current gate
driver for an external n-channel mosfet. It delivers
a constant output voltage, up to 60 V, which
supplies the inputs of the two integrated or
external buck converters.
The boost controller of two devices can be
stacked, in order to operate in dual phase for high
power applications, with an interleaving pattern
for an improved input current ripple.
The buck converters integrate n-channel mosfet
which is driven by a bootstrap circuit.
Applications
? Low Beam
? High beam
? Daytime running light
? Turn indicator
? Position light
? Side marker
? Fog light
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
STMicroelectronics |
24+ |
40-TFQFN Exposed Pad |
39500 |
一級(jí)代理/放心采購(gòu) |
|||
STMicroelectronics |
25+ |
40-TFQFN 裸露焊盤 |
9350 |
獨(dú)立分銷商 公司只做原裝 誠(chéng)心經(jīng)營(yíng) 免費(fèi)試樣正品保證 |
|||
ST |
新年份 |
QFN40 |
57582 |
原裝 原裝 原裝 只做原裝現(xiàn)貨 |
|||
ST |
SOP |
3000 |
有上就有只有原裝,可含稅開原型號(hào)發(fā)票,實(shí)單帶接受價(jià) |
||||
ST |
23+ |
VFQFPN 6X6 |
12500 |
ST系列在售,可接長(zhǎng)單 |
|||
ST(意法半導(dǎo)體) |
24+ |
QFN-40-EP(6x6) |
9908 |
支持大陸交貨,美金交易。原裝現(xiàn)貨庫(kù)存。 |
|||
ST |
2024+ |
N/A |
70000 |
柒號(hào)只做原裝 現(xiàn)貨價(jià)秒殺全網(wǎng) |
|||
ST |
24+ |
N/A |
8000 |
全新原裝正品,現(xiàn)貨銷售 |
|||
ST |
22+23+ |
SOP |
8000 |
新到現(xiàn)貨，只做原裝進(jìn)口 |
|||
ST |
24+ |
QFN40 |
16500 |
只做原裝正品現(xiàn)貨 假一賠十 |
L99LD21 資料下載更多...
L99LD21 芯片相關(guān)型號(hào)
STMICROELECTRONICS相關(guān)芯片制造商
Datasheet數(shù)據(jù)表PDF頁碼索引
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- P102
STMicroelectronics 意法半導(dǎo)體集團(tuán)
中文資料: 162402條
意法半導(dǎo)體 (STMicroelectronics) 成立于1987年，總部位于瑞士日內(nèi)瓦和法國(guó)巴黎，是一家全球領(lǐng)先的半導(dǎo)體公司。意法半導(dǎo)體專注于設(shè)計(jì)、制造和銷售各種半導(dǎo)體解決方案，產(chǎn)品廣泛應(yīng)用于汽車、工業(yè)、消費(fèi)電子、通信等領(lǐng)域。 意法半導(dǎo)體的產(chǎn)品包括微控制器、模擬集成電路、功率半導(dǎo)體、傳感器等。公司擁有多個(gè)研發(fā)中心和生產(chǎn)基地，致力于技術(shù)創(chuàng)新和研發(fā)投入。意法半導(dǎo)體在全球范圍內(nèi)擁有廣泛的客戶群和合作伙伴，為客戶提供高品質(zhì)的產(chǎn)品和解決方案。 公司的使命是通過半導(dǎo)體技術(shù)推動(dòng)智能化和可持續(xù)發(fā)展，助力客戶取得成功。意法半導(dǎo)體不僅注重商業(yè)成功，還注重社會(huì)責(zé)任、環(huán)境保護(hù)和可持續(xù)經(jīng)營(yíng)。企業(yè)價(jià)值觀包括創(chuàng)新、尊重
