MAX20446
製造中Automotive 6-Channel Backlight Driver with Boost/SEPIC Controller and I2C Interface
6-Channel 120mA 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:$3.52
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 6-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
- Individual String LED Current
- Thermal Shutdown
- Compact (4mm x 4mm) 24-Pin TQFN Package
The MAX20446 is a 6-channel backlight driver 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 frequency range 400kHz to 2.2MHz. 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 via the I2C interface.
The MAX20446 is available in a TQFN package and operates in the -40°C to 125°C temperature range.
Design Solution: Overcome the Design Challenges of New Automotive Display Backlights ›
Applications
- Central Information Displays
- Infotainment Displays
- Instrument Clusters
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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 |
---|---|---|---|
MAX20446ATG/V+ | 24-TQFN-4X4X0.75 | ||
MAX20446ATG/V+T | 24-TQFN-4X4X0.75 | ||
MAX20446ATG/VY+ | 24-LFCSP_SS-4X4X0.75 | ||
MAX20446ATG/VY+T | 24-LFCSP_SS-4X4X0.75 |
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