LT8355-1中文资料PDF规格书
LT8355-1规格书详情
DESCRIPTION
The LT®8355-1 a dual-channel DC/DC controller designed
to drive two strings of high current LEDs. The fixed frequency,
current mode architecture results in stable operation
over a wide range of supply and output voltages.
Voltage feedback pins serve as the inputs for several LED
protection features and makes it possible for the converters
to operate as a constant-voltage sources.
The LT8355-1 senses output current at the high or low
side of the load. The product of CTRL2 and IADJ2 inputs
provides analog programming of the output current for
channel 2. Channel 1 output current is programmed
through CTRL1 input. The PWM input and PWMTG high
side PMOS driver provides precision time-based LED
dimming capability. When driven by an external digital
signal, the PWM input provides LED dimming ratios of up
to 20,000:1 at 100Hz. When driven by a constant voltage,
the PWM input selects from one of 128 internally generated,
precision, exponentially spaced dimming ratios
ranging from 0.78 up to 100.
FEATURES
- Two independent High Voltage LED Driver Controllers Channels
- 128:1 Internal Exponential PWM Dimming
- Two-Pin Multiplying Analog Dimming (CH2)
- Spread Spectrum Frequency Modulation
- 20,000:1 External PWM Dimming at 100Hz
- Rail-to-Rail LED Current Sensing: 0V to 120V
- ±2 LED Current Regulation
- ±2 Output Voltage Regulation
- LED Short/Open Protection and Indication
- Wide Input Voltage Range (5V to 60V)
- PMOS Switch Driver for PWM and Output Disconnect
- Independent Channel Dimming
- Constant-Voltage and Constant-Current Regulation
- Adjustable Switching Frequency 100kHz to 2MHz
- Independent OPEN/SHORT LED FAULT per channel
- Programmable VIN UVLO with Hysteresis
- Side Solderable 28-Lead 4mm × 5mm QFN Package
- AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
- High Voltage LED Applications
- Automotive Head Lamps/Running Lamps
- Accurate Current Limited Voltage Regulator
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
Analog Devices |
20+21+ |
Tube |
8880 |
十年老店,原装正品 |
询价 | ||
ADI |
22+ |
QFN |
978 |
全新原装 |
询价 | ||
Analog Devices Inc. |
22+/23+ |
12-MSOP-EP |
7500 |
原装进口公司现货假一赔百 |
询价 | ||
ADI/亚德诺 |
23+ |
TUBE |
3000 |
只做原装正品,假一赔十 |
询价 | ||
Analog Devices |
2022+ |
原厂封装 |
95000 |
100%进口原装正品现货,公司原装现货众多欢迎加微信咨 |
询价 | ||
LINEAR/凌特 |
MSOP12 |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
ADI |
23/22+ |
NA |
3500 |
代理渠道.实单必成 |
询价 | ||
ADI |
23+ |
MSOP12 |
8000 |
只做原装现货 |
询价 | ||
LINEAR/凌特 |
23+ |
MSOP12 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
ADI/亚德诺 |
22+ |
SOIC-12 |
2000 |
16年电子元件现货供应商 终端BOM表可配单提供样品 |
询价 |