Overview
The DLPA2005ERSLR, produced by Texas Instruments, is a dedicated Power Management Integrated Circuit (PMIC) and RGB LED/Lamp driver designed specifically for the DLP2010, DLP2010NIR, and DLP3010 Digital Micromirror Devices (DMDs). This component is integral when used with digital controllers such as the DLPC3430, DLPC3433, DLPC3435, DLPC3438, or DLPC150. It provides a comprehensive solution for managing power and driving LEDs in various display and projection applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Package Type | VQFN (RSL), 48 pins, 0.4-mm pitch |
| Die Size | 6.0 mm × 6.0 mm ± 0.15 mm |
| Input Voltage Range | 1.8 to 3.6 V |
| Max LED Current | 2.4 A |
| Output Current (Step-Down Converter) | Up to 600 mA |
| MOSFET Switches | Three low-impedance (30 mΩ typical at 27°C) |
| Current Control | Independent, 10-bit current control per channel |
| Voltage Supplies | VOFS: 10 V, VBIAS: 18 V, VRST: –14 V |
| Power Save Mode | At light load current |
| Serial Interface | 33-MHz Serial Peripheral Interface (SPI) |
| Protection Circuits | Overcurrent, undervoltage, hot die warning, thermal protection |
Key Features
- High efficiency RGB LED/lamp driver with buck-boost DC-to-DC converter.
- Synchronous step-down converter with integrated switching FETs, supporting up to 600-mA output current.
- Independent, 10-bit current control per channel.
- Three low-impedance MOSFET switches for channel selection.
- DMD regulators and power supply sequencing.
- Multiplexer for measuring analog signals including battery voltage, LED voltage, LED current, light sensor, and internal reference voltage.
- Monitoring and protection circuits including hot die warning, thermal protection, low-battery warning, and programmable battery undervoltage lockout (UVLO).
- Passive discharge to GND when disabled.
- Low-impedance load switch with UVLO.
Applications
- Display and projection systems using DLP2010, DLP2010NIR, and DLP3010 DMDs.
- Portable near-infrared spectroscopy solutions.
- Compact and ultraportable display applications in consumer, industrial, medical, and IoT markets.
- 3D printing and structured light pattern generators.
- Low power and mobile HD display applications such as accessory projectors, wearable displays, signage, and industrial and medical displays.
Q & A
- What is the primary function of the DLPA2005ERSLR?
The DLPA2005ERSLR is a PMIC and RGB LED/Lamp driver designed for DLP2010, DLP2010NIR, and DLP3010 Digital Micromirror Devices (DMDs). - What is the input voltage range for the DLPA2005ERSLR?
The input voltage range is from 1.8 to 3.6 V. - What is the maximum LED current supported by the DLPA2005ERSLR?
The maximum LED current is 2.4 A. - Does the DLPA2005ERSLR have built-in protection circuits?
Yes, it includes overcurrent, undervoltage, hot die warning, and thermal protection circuits. - What type of serial interface does the DLPA2005ERSLR support?
The DLPA2005ERSLR supports a 33-MHz Serial Peripheral Interface (SPI). - What is the package type and pin count of the DLPA2005ERSLR?
The package type is VQFN (RSL) with 48 pins and a 0.4-mm pitch. - Can the DLPA2005ERSLR be used in low power applications?
Yes, it supports power save mode at light load current, making it suitable for low power applications. - What are the key voltage supplies provided by the DLPA2005ERSLR?
The key voltage supplies include VOFS: 10 V, VBIAS: 18 V, and VRST: –14 V. - Does the DLPA2005ERSLR support external temperature sensing?
Yes, it supports an external (thermistor) temperature sensor. - What is the purpose of the multiplexer in the DLPA2005ERSLR?
The multiplexer is used for measuring various analog signals such as battery voltage, LED voltage, LED current, and light sensor readings.
