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LM3556TMXSLASHNOPB.A中文資料
LM3556TMXSLASHNOPB.A數(shù)據(jù)手冊規(guī)格書PDF詳情
1 Features
1? Grounded Cathode LED Operation for Improved
Thermal Management
? 1.5-A High-Side Current Source for Single LED
? Accurate and Programmable LED Current from
46.9 mA to 1.5 A
? > 85% Efficiency in Torch Mode (at 100 mA) and
Flash Mode (at 1 A to 1.5 A)
? Small Solution Size: < 20 mm2
? LED Thermal Sensing and Current Scale-Back
? Soft-Start Operation for Battery Protection
? Hardware Enable Pin
? Hardware Torch Enable
? Hardware Strobe Enable
? Synchronization Input for RF Power Amplifier
Pulse Events
? VIN Flash Monitor Optimization
? 400-kHz I2C-Compatible Interface
? I2C-Compatible Programmable NTC Trip Point
? 0.4-mm Pitch, 16-Pin DSBGA Package
2 Applications
Camera Phone LED Flash
3 Description
The LM3556 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 LM3556 is controlled via an I2C-compatible
interface. Features include: a hardware flash enable
(STROBE) allowing a logic input to trigger the flash pulse, a hardware torch enable (TORCH) for Movie
Mode or flashlight functions, 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, and an
integrated comparator designed to monitor an NTC
thermistor and provide an interrupt to the LED
current. With a fast 1-μs transition from 0 mA to
46.9 mA, the TORCH input pin can be used to
develop custom LED current waveforms.
The 4-MHz switching frequency, overvoltage
protection and adjustable current limit allow for the use of tiny, low-profile inductors and 10-μF ceramic
capacitors. The device is operates over a ?40°C to
+85°C temperature range.
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
NS |
23+ |
QFN |
250 |
全新原裝正品現(xiàn)貨,支持訂貨 |
|||
TI |
22+ |
8WSON |
9000 |
原廠渠道,現(xiàn)貨配單 |
|||
LM3557SD2 |
44462 |
44462 |
|||||
TI |
23+ |
8WSON |
9000 |
原裝正品，支持實單 |
|||
National |
24+ |
LLP-8 |
6980 |
原裝現(xiàn)貨,可開13%稅票 |
|||
TexasInstruments |
18+ |
ICLEDDRIVERWHITEBCKLGT8- |
6580 |
公司原裝現(xiàn)貨/歡迎來電咨詢! |
|||
TI |
20+ |
原裝 |
65790 |
原裝優(yōu)勢主營型號-可開原型號增稅票 |
|||
Texas Instruments |
24+ |
8-WFDFN 裸露焊盤 |
39500 |
一級代理/放心采購 |
|||
NSC |
06+ |
LLP |
23000 |
優(yōu)勢 |
|||
TI |
20+ |
DFN-8 |
1001 |
就找我吧!--邀您體驗愉快問購元件! |
LM3556TMXSLASHNOPB.A 資料下載更多...
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TI2相關(guān)芯片制造商
Datasheet數(shù)據(jù)表PDF頁碼索引
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Texas Instruments 美國德州儀器公司
中文資料: 14669條
德州儀器（Texas Instruments），簡稱TI，是全球領(lǐng)先的半導(dǎo)體公司，為現(xiàn)實世界的信號處理提供創(chuàng)新的數(shù)字信號處理（DSP）及模擬器件技術(shù)。除半導(dǎo)體業(yè)務(wù)外，還提供包括傳感與控制、教育產(chǎn)品和數(shù)字光源處理解決方案。TI總部位于美國德克薩斯州的達拉斯，并在25多個國家設(shè)有制造、設(shè)計或銷售機構(gòu)。德州儀器是推動互聯(lián)網(wǎng)時代不斷發(fā)展的半導(dǎo)體引擎，作為實時技術(shù)的領(lǐng)導(dǎo)者，TI正在快速發(fā)展，在無線與寬帶接入等大型市場及數(shù)碼相機和數(shù)字音頻等新興市場方面，憑借性能卓越的半導(dǎo)體解決方案不斷推動著互聯(lián)網(wǎng)時代的前進步伐。TI預(yù)想未來世界的方方面面都滲透著TI產(chǎn)品的點點滴滴，每個電話、每次上網(wǎng)、拍的每張照片、聽的每
