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參數(shù)資料
| 型號： | CAT3612HV2-T2 |
| 英文描述： | Programmable 300mA Camera Flash LED Driver |
| 中文描述： | 可編程的300mA相機閃光燈LED驅(qū)動器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 461K |
| 代理商： | CAT3612HV2-T2 |
CAT3612
2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. 5016 Rev. A
Protection mode
If an LED becomes open-circuit, the output voltage
VOUT is internally limited to about 5.5V. This is to
prevent the output pin from exceeding its absolute
maximum rating.
The driver enters a thermal shutdown mode as soon
as the die temperature exceeds about +165oC. When
the device temperature drops down by about 20oC,
the device resumes normal operation.
External components
The driver requires a total of four external 1
μ
F
ceramic capacitors: two for decoupling input and
output, and two for the charge pump. Both capacitor
types X5R and X7R are recommended for the LED
driver application. In the 1.5x charge pump mode, the
input current ripple is kept very low by design, and an
input bypass capacitor of 1
μ
F is sufficient. In 1x mode,
the device operating in linear mode does not introduce
switching noise back onto the supply.
Recommended Layout
In 1.5x charge pump mode, the driver switches
internally at a high frequency of 1MHz. It is
recommended to minimize trace length to all four
capacitors. A ground plane should cover the area
under the driver IC as well as the bypass capacitors.
Short connection to ground on capacitors Cin and
Cout can be implemented with the use of multiple via.
A copper area matching the TDFN exposed pad
(GND) must be connected to the ground plane
underneath. The use of multiple via improves the
package heat dissipation.
Figure 5. Recommended Layout
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT3614 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Channel 1-Wire LED Driver in 3x3mm Package |
| CAT3614_08 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Channel 1-Wire LED Driver in 3 x 3mm Package |
| CAT3614HS2-T2 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Channel 1-Wire LED Driver in 3x3mm Package |
| CAT3614HV2-GT2 | 功能描述:LED照明驅(qū)動器 LED Driver,Charge pump,4 ch 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 |
| CAT3614HV2G-T2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
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