Overview
| # of Channels | 2, 3 |
|---|---|
| Max Current/Ch (mA) | 2.15A, 1.45A |
| LEDs/ Ch. | 1, 1 |
| Operating Voltage (MIN) (V) | 2.7 |
| Operating Voltage (MAX) (V) | 5.5 |
| Reference Voltage | I2C Controlled |
| Frequency (MHz) | 2.4 |
| Max Voltage (V) | 5.5 |
| Quiescent Current (μA) | 1 |
| Efficiency (%) | |
| Package | TQFN-20 |
| Application | Flash |
| Features | Uses SuperCap technology, Charge pump topology, Enable pin, flash/torch mode, I²C programmable Overvoltage, overcurrent and temp |
The XRP6840 is a controlled-current dual-cell supercapacitor charger and high power LED driver. Operating from a standard lithium-ion battery, it provides up to 4.3A of programmable flash LED current and up to 600mA and 5.6V of programmable supercapacitor charging current and voltage.
Architectured around a 2.4MHz tri-mode 1x, 1.5x and 2x charge pump, the XRP6840 charges the stacked supercapacitor to the programmed output voltage with no more than 600mA drawn from the battery. While charging, an internal active balance circuitry insures matching of the stacked capacitors’ voltages.
A standard 2-line I2C serial interface allows the dynamic programming of LED currents in torch and flash modes, flash timeout, channel enable, gain control, capacitor charge voltage, and enable. The XRP6840 comes in a 2 and 3 channel version supporting respectively 440mA/2.15A per channel and 300mA/1.45A in torch/flash modes.
- Programmable 4.3A flash LED driver
- Torch and flash modes
- 2 and 3 channels versions
- Programmable supercapacitor charger
- 600mA adjustable charging current
- Programmable supercapacitor voltage
- In-rush current control
- Active voltage balance control
- Tri-mode charge pump architecture
- 1x, 1.5x, 2x operation modes
- 2.4MHz switching frequency
- I²C serial interface
- Thermal, overcurrent and output short protection
- LED short detection
- Green/halogen free 20-pin 4mm x 4mm TQFN package
- High power torch/strobe/flash LED
- High resolution cameras
- Generic high power lighting
- High power white LED backlighting
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XRP6840 4.3A Supercapacitor Flash LED Driver with I²C | 1.0.0 | December 2009 | 658.9 KB |
| User Guides & Manuals | XRP6840 Evaluation Board Manual | 1.0.0 | September 2014 | 817.8 KB |
| User Guides & Manuals | XRP6840EVB Exarizer | 1.0.0 | March 2011 | 927.9 KB |
| Product Brochures | Power Management Brochure | R03 | April 2025 | 6.2 MB |
| Configuration Tools | XRP6840 Configuration Tool | 1.0.0 | April 2011 | 110.1 KB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| XRP6840AILB-F | TQFN20 4x4 | -40 | 125 | OBS | ||
| XRP6840AILBTR-F | TQFN20 4x4 | -40 | 125 | OBS | ||
| XRP6840BILB-F | TQFN20 4x4 | -40 | 125 | OBS | ||
| XRP6840BILBTR-F | TQFN20 4x4 | -40 | 125 | 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.
Packaging
| Pkg Code | Details | Quantities | Dimensions |
|---|---|---|---|
| TQFN20 4x4 |
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Notifications
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