TMP1750三通道線性LED驅(qū)動(dòng)器
發(fā)表日期:2022-07-06瀏覽:1919
東沃電子(DOWOSEMI)代理的TMP1750芯片是一款具有模擬和 PWM 調(diào)光控制功能的三通道線性LED驅(qū)動(dòng)器。該器件的全面診斷和內(nèi)置保護(hù)功能使其成為可變強(qiáng)度 LED 照明(可達(dá)到中等功率范圍)應(yīng)用的理想之選。查看TMP1750芯片產(chǎn)品手冊(cè),可知:The design of this device suits it well for driving LEDs configured as a single string or multiple strings within its power capability. A single device can drive up to three strings with one to three LEDs in each string at a total current of up to 150 mA per channel. Outputs can be paralleled to provide higher current drive capability to 450 mA. In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED strings. So, the application needs only a single return wire instead of one return wire per LED string that a system with low-side current sense would need. A single-LED-short comparator allows detection of single LED failing with a short circuit. Fault output can support bus connection topology between multiple devices. The included temperature monitor reduces the LED drive current if the device junction temperature exceeds a thermal threshold. One can program the temperature threshold through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.
TMP1750三通道線性LED驅(qū)動(dòng)器特點(diǎn)
? 符合汽車類應(yīng)用的標(biāo)準(zhǔn)? 具有符合 AEC-Q100標(biāo)準(zhǔn)的下列結(jié)果
– 器件溫度 1 級(jí):–40°C 至 125°C 的環(huán)境運(yùn)行溫度范圍
– 器件 HBM ESD 分類等級(jí) H2
– 件 CDM ESD 分類等級(jí) C3B
? 3通道LED驅(qū)動(dòng)器(具有模擬和PWM調(diào)光功能)
? 寬輸入電壓范圍:5V - 28V
? 由基準(zhǔn)電阻器設(shè)定的可調(diào)恒定輸出電流
– 最大電流:每通道 150mA
– 最大電流:并聯(lián)運(yùn)行模式下為 450mA
? 使用多個(gè)IC或者單個(gè)IC的多個(gè)通道的并聯(lián)輸出,以實(shí)現(xiàn)更高電流
? 低壓降電壓
– 最大壓降:電流為60mA時(shí)每通道400mV
– 最大壓降:電流為150mA時(shí)每通道 0.9V
? 每個(gè)通道獨(dú)立進(jìn)行 PWM 調(diào)光
? 具有抗毛刺脈沖計(jì)時(shí)器的開路和短路LED檢測(cè)
? 每條通道的LED燈串電壓反饋,用于單個(gè)LED短路檢測(cè)
? 針對(duì)單個(gè)LED短路故障的獨(dú)立故障引腳
? 用于報(bào)告開路、短路和熱關(guān)斷故障的故障引腳,可通過一條總線并行連接最多 15 個(gè)器件
? 器件可適應(yīng)慢輸入電壓 dV/dt(0.5V/分),而不會(huì)出現(xiàn)任何問題
? 運(yùn)行結(jié)溫范圍:-40°C 至 150°C
? 封裝:16引腳耐熱增強(qiáng)型封裝 (HTSSOP)
TMP1750三通道線性LED驅(qū)動(dòng)器引腳配置說明
TMP1750三通道線性LED驅(qū)動(dòng)器應(yīng)用電路
汽車LED照明應(yīng)用,比如:日間行車燈、駐車燈、霧燈、尾燈 、停車燈、室內(nèi)照明燈。
細(xì)心的電子工程師對(duì)比參數(shù)后會(huì)發(fā)現(xiàn),東沃電子(DOWOSEMI)代理的三通道線性LED驅(qū)動(dòng)器TMP1750可替代替換品牌TI (德州儀器)TPS92630-Q1 (pin-to-pin HTSSOP-16)、TPS92610-Q1(當(dāng)TMP1750三通道并聯(lián)輸出450mA應(yīng)用時(shí)可以代替)、TPS92611-Q1(當(dāng)TMP1750三通道并聯(lián)輸出450mA應(yīng)用時(shí)可以代替)和Elmos品牌E522.80/81。具體詳情,可咨詢東沃電子銷售工程師:137 5773 6996(微信同號(hào))余經(jīng)理
東沃方案精選推薦:1)CAN控制器局域網(wǎng)總線浪涌靜電保護(hù)方案
2)DC 12V系統(tǒng)拋負(fù)載測(cè)試防護(hù)解決方案設(shè)計(jì)圖及TVS二極管選型指南
3)汽車24V供電系統(tǒng)過拋負(fù)載測(cè)試及TVS保護(hù)二極管選型推薦
4)汽車多媒體系統(tǒng)端口ESD靜電保護(hù)方案
5)HDMI高清多媒體接口靜電浪涌保護(hù),TVS二極管怎么選型?
6)汽車EPS模塊拋負(fù)載保護(hù)電路設(shè)計(jì)方案及保護(hù)器件選型
7)USB PD快充接口浪涌靜電保護(hù)用TVS二極管,如何選型選用?
8)I2C總線串口靜電浪涌保護(hù)方案及ESD二極管選型選用
9)RS-232傳輸接口浪涌靜電保護(hù)電路圖,超齊全
10)RS-485總線接口雷擊浪涌過壓及靜電保護(hù)方案
11)POE以太網(wǎng)供電浪涌保護(hù)方案 東沃電子免費(fèi)優(yōu)化設(shè)計(jì)
12)LIN總線浪涌靜電保護(hù)及ESD二極管選用選型
13)1000M以太網(wǎng)POE供電浪涌靜電防護(hù)方案及保護(hù)器件選型指南
14)Type-C端口集成式靜電保護(hù)方案及ESD二極管選型參數(shù)詳解