MSL2164-DUR Atmel, MSL2164-DUR Datasheet - Page 2

• Manufacturer Part Number: MSL2164-DUR
• Description: LED Lighting Drivers 16-String LED Driver Mult-PWM Modes 3FO
• Manufacturer: Atmel

Specifications of MSL2164-DUR

• Rohs: yes
• Operating Frequency: 20 MHz
• Maximum Supply Current: 350 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-64

Features:
• 12-Bit PWM String Dimming
• Forward, Center, Reverse and Inverse PWM Modes
• Fast 20MHz SPI Supports Up to 8 Devices per Bus
• 8-Bit Adaptive Power Correction Maximizes Efficiency
• External Current Regulation MOSFETs for High
• Drives Up to 16 Parallel LED Strings Per Device,
• Supports Adaptive, Real-Time Area Dimming for
• Easily Implements Scrolling, 3D, and Local Dimming
• Programmable String Phase Reduces Motion Blur and
• Global Intensity Control via SPI Serial Interface
• 0.8% String to String Matching
• PWM Dimming Synchronized to VSYNC and HSYNC
• Second Set of PWM Registers Select Alternate
• Configurable Power-up Defaults Through Internal
• LED Open Circuit and Short Circuit Fault Detection
• Individual Fault Detection Enabled for Each String
• Over-Temperature Shutdown Protection
• Broadcast Write Simplifies Configuration
• -40°C To +85°C Operating Temperature Range
for Up to 3 String Power Supplies
Voltage and/or Current
Cascade Additional Devices for More Strings
Highest Dynamic Range in LCD TVs and Monitors
Algorithms
Improves Efficiency
Including Frequency Multipliers and Dividers
Brightness and Timing
EEPROM
Atmel LED Drivers MSL2164 / MSL2166
16-String High-Efficiency LED Drivers for
LCD TVs with Advanced Dimming Modes
The MSL2164/MSL2166 compact, high-power LED string drivers use external
current control MOSFETs to sink up to 350mA per string, with matching better
than ±0.8%. The MSL2164/MSL2166 drive 16 parallel strings of LEDs and offer
fault detection and management of open-circuit and short-circuit LEDs.
The MSL2164/MSL2166 feature a 20MHz SPI serial interface. Both devices
support video frame-by-frame LED string intensity control for up to eight
interconnected devices, allowing active area dimming and phase-shifted PWM
outputs. They also include an advanced PWM engine that synchronizes PWM
dimming to the video signal supporting forward, center, reverse and inverse PWM
modes for reduced motion blur and waterfall noise.
The MSL2164/MSL2166 adaptively control any topology DC-DC or AC/DC
converter that power the LED strings. The patent-pending “Efficiency Optimizers”
minimize power use while maintaining LED current accuracy.
A unique combination of LED current control and pulse width dimming
management offers simple full-screen brightness control, versatile area dimming
and a consistent white point. Full-scale LED regulation current is set for each
string using current sense resistors and a 10-bit register that controls global
string current. The 12-bit global intensity register controls PWM dimming of all
strings, and each string uses a 12-bit register to control individual string PWM
dimming.
The MSL2164/MSL2166 monitor the LED strings for open-circuit, short-circuit,
loss-of-sync and over-temperature faults, and provide a hardware fault output
(FLTB) to notify the microcontroller. Detailed fault status and control are available
through the serial interface. Additionally, the MSL2164/MSL2166 include on-chip
EEPROMs that allow customizing of the register power-up states via the serial
interface.
The MSL2164/MSL2166 are offered in a 9 x 9 x 0.85mm, 64-pin TQFN package
and operate over the -40°C to 85°C temperature range.
Applications:
Long-Life, Efficient LED Backlighting for:
Channel Signs
Architectural Lighting
Ordering Information:
• Televisions and Desktop Monitors
• Medical and Industrial Instrumentation
• Automotive Audio-visual Displays
MSL2164
MSL2166
PART
16-CHANNEL LED STRING DRIVERS
2 FBO + 1 FBI
INTERFACE
3 FBO
64 pin, 9 x 9 x 0.85mm TQFN
64 pin, 9 x 9 x 0.85mm TQFN
PACKAGE