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參數資料
| 型號： | NSI45025AT1G |
| 廠商： | ON Semiconductor |
| 文件頁數： | 4/7頁 |
| 文件大小： | 166K |
| 描述： | IC LED DRIVER LINEAR SOD-123 |
| 產品培訓模塊： | Constant Current Regulators |
| 視頻文件： | Advantages of Constant Current Regulators (CCR) in Driving LEDs |
| 特色產品： | 45V Two-Terminal LED Drivers |
| 標準包裝： | 1 |
| 功能： | * |
| 檢測方法： | * |
| 精確度： | * |
| 輸入電壓： | * |
| 電流 - 輸出： | * |
| 工作溫度： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOD-123 |
| 供應商設備封裝： | SOD-123 |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1120 (CN2011-ZH PDF) |
| 其它名稱： | NSI45025AT1GOSDKR |
NSI45025AT1G
http://onsemi.com
4
APPLICATIONS INFORMATION
The CCR is a self biased transistor designed to regulate the
current through itself and any devices in series with it. The
device has a slight negative temperature coefficient, as
shown in Figure 2 Tri Temp. (i.e. if the temperature
increases the current will decrease). This negative
temperature coefficient will protect the LEDS by reducing
the current as temperature rises.
The CCR turns on immediately and is typically at 20% of
regulation with only 0.5 V across it.
The device is capable of handling voltage for short
durations of up to 45 V so long as the die temperature does
not exceed 150癈. The determination will depend on the
thermal pad it is mounted on, the ambient temperature, the
pulse duration, pulse shape and repetition.
Single LED String
The CCR can be placed in series with LEDs as a High Side
or a Low Side Driver. The number of the LEDs can vary
from one to an unlimited number. The designer needs to
calculate the maximum voltage across the CCR by taking the
maximum input voltage less the voltage across the LED
string (Figures 7 and 8).
Figure 7.
Figure 8.
Higher Current LED Strings
Two or more fixed current CCRs can be connected in
parallel. The current through them is additive (Figure 9).
Figure 9.
相關PDF資料 |
PDF描述 |
|---|---|
| NSI45025AZT1G | IC LED DRIVER LINEAR SOT-223 |
| NSI45025T1G | IC CCR/LED DVR 45V 25MA SOD-123 |
| NSI45025ZT1G | IC CCR/LED DVR 45V 25MA SOT223-4 |
| NSI45030AT1G | IC LED DRIVER LINEAR SOD-123 |
| NSI45030AZT1G | IC LED DRIVER LINEAR SOT-223 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| NSI45025AT1G | 制造商:ON Semiconductor 功能描述:Constant Current Regulator & LED Driver |
| NSI45025AZT1G | 功能描述:LED照明驅動器 SOT223 25mA 10% CCR RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| NSI45025AZT1G | 制造商:ON Semiconductor 功能描述:Constant Current Regulator & LED Driver |
| NSI45025T1G | 功能描述:LED照明驅動器 SOD 123 25mA 15% CCR RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| NSI45025ZT1G | 功能描述:LED照明驅動器 SOT223 25mA 15% CCR RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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