MAX20444C
製造中Automotive 4-Channel, 130mA Backlight Driver with Boost/SEPIC Controller and I2C Interface
4-Channel, 130mA LED Driver Provides Full Diagnostics and Hybrid Dimming thru I2C
- 製品モデル
- 4
- 1Ku当たりの価格
- 最低価格:$2.62
製品の詳細
- Wide-Voltage-Range Operation
- Operates Down to 4V Supply After Startup
- Survives Load Dump Up to 52V
- High Integration
- Complete 4-Channel Solution Including Boost Controller
- I2C Control for Minimum Parts Count
- Robust and Low EMI
- Spread-Spectrum Oscillator
- Phase Shifting
- 400kHz to 2.2MHz Switching-Frequency Range
- Fail-Safe Operation Mode Using the FSEN Pin
- Versatile Dimming Scheme Allows Hybrid or PWM-Only Dimming Using DIM Input or I2C
- Dimming Ratio > 10000:1 Using Hybrid Dimming
- 10000:1 Dimming Ratio at 200Hz Using PWM Dimming
- Complete Diagnostics
- LED Open/Short Detection and Protection
- Boost Output Undervoltage and Overvoltage
- Boost-Voltage Measurement
- LED-Current Measurement
- Thermal Shutdown
- Compact (4mm x 4mm) 24-Pin TQFN and SWTQFN Packages
The MAX20444C is a 4-channel backlight driver IC with boost controller for automotive displays. The integrated current outputs can sink up to 130mA LED current each. The device accepts a wide 4.5V to 36V input voltage range and withstands direct automotive load-dump events.
The internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in the 400kHz to 2.2MHz frequency range. Integrated spread spectrum helps reduce EMI. An adaptive output-voltage-control scheme minimizes power dissipation in the LED current-sink paths.
The device features I2C-controlled pulse-width-modulation (PWM) dimming and hybrid dimming. In either case, the minimum pulse width is 500ns. Phase-shifted dimming of the strings is incorporated for lower EMI.
Comprehensive diagnostic information is also available through the I2C interface, while stand-alone operation is also supported.
The MAX20444C is available in a 24-pin TQFN or 24-pin side-wettable TQFN (SWTQFN) package and operates over the -40°C to +125°C temperature range.
Applications
- Central Information Displays
- Infotainment Displays
- Instrument Clusters
ドキュメント
ビデオ 1
製品モデル | ピン/パッケージ図 | 資料 | CADシンボル、フットプリント、および3Dモデル |
---|---|---|---|
MAX20444CATG/V+ | 24-TQFN-4X4X0.75 | ||
MAX20444CATG/V+T | 24-TQFN-4X4X0.75 | ||
MAX20444CATG/VY+ | 24-LFCSP_SS-4X4X0.75 | ||
MAX20444CATG/VY+T | 24-LFCSP_SS-4X4X0.75 |
これは最新改訂バージョンのデータシートです。
ツールおよびシミュレーション
LTspice
下記製品はLTspiceで使用することが出来ます。:
- MAX20444B
LTspice®は、無料で提供される強力で高速な回路シミュレータと回路図入力、波形ビューワに改善を加え、アナログ回路のシミュレーションを容易にするためのモデルを搭載しています。
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