Overview
| # of Channels | 8 |
|---|---|
| Max Current/Ch (mA) | 100 |
| LEDs/ Ch. | 7 |
| Operating Voltage (MIN) (V) | 4.2 |
| Operating Voltage (MAX) (V) | 30 |
| Dropout Voltage (mV) | 450 |
| Ch./ Ch. Accuracy (%) | 1.5 |
| Control Interface | TTL |
| Package | TSSOP-20 |
| Application | General |
| Features | Enable pin, PWM dimming, Programmable LED current, Smart Talk power optimization, UVLO, OTP, open LED and overcurrent protection |
The XRP7618 is an 8-channel, high voltage, constant-current sink LED driver capable of driving up to 100mA current per channel.
With outputs rated at 30V, the XRP7618 can control strings of multiple LEDs with better than ±1.5% channel-to-channel current matching. LED channel current is programmed via an external resistor within a 10mA to 100mA range. Dimming control is supported through a standard PWM scheme up to 25kHz or through an analog signal.
Featuring Exar’s Smart Talk™ technology, when combined with a boost converter, the XRP7618 maximizes the overall system efficiency by dynamically reporting the minimum LED voltage necessary to maintain current regulation mode. Multiple channels can be combined to increase current driving capability per channel and multiple XRP7618s can be placed in parallel to drive over 8 strings of LEDs.
An undervoltage lock out, open LED and over temperature protections insure safe operations under abnormal operating conditions.
- 8 Constant-current channels
- Adjustable up to 100mA per channel
- Channel paralleling for higher current
- ±1.5% channel-to-channel accuracy
- Up to 30V LED channel voltage range
- 5V biasing voltage and control
- Smart Talk system power optimization
- Parallel operations support
- PWM and analog dimming
- UVLO, open LED and over temperature protection
- RoHS compliant halogen Free, 20-pin TSSOP (EP) package
- LCD backlighting
- Desktop, notebook and TV displays
- Industrial and medical displays
- Signage backlighting
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XRP7618 8-Channel Constant Current Linear LED Driver With Smart Talk™ | 1.2.0 | February 2013 | 776.2 KB |
| Product Brochures | Power Management Brochure | October 2020 | 2.4 MB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| XRP7618IGBTR-F | TSSOP20 OPT2 | -40 | 85 | OBS |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
