ADP8861 Charge Pump, 7-Channel Smart LED Driver with I2C Interface
The ADP8861 provides a powerful charge pump driver with independent control of up to seven LEDs. Six of these LEDs can be independently driven up to 30 mA (typical). A seventh LED can be driven to 60 mA (typical). All LEDs are programmable for maximum current and fade in/out times via the I2C® interface. These LEDs can also be combined into groups to reduce the processor instructions during fade in/out.
Driving this entire configuration is a two-capacitor charge pump with gains of 1×, 1.5×, and 2×. This setup is capable of driving a maximum IOUT of 240 mA from a supply of 2.5 V to 5.5 V. A full suite of safety features, including short-circuit, overvoltage, and overtemperature protection, allows easy implementation of a safe and robust design. Additionally, input inrush currents are limited via an integrated soft start combined with controlled input-to-output isolation.
The ADP8861 is available in a compact lead frame chip scale package (LFCSP).
Features and Benefits- Charge pump with automatic gain selection of 1x, 1.5x, and 2x for maximum efficiency
- 7 independent, programmable LED drivers: 7 drivers capable of 30 mA (typical); 1 driver also capable of 60 mA (typical)
- Programmable maximum current limit (128 levels)
- Standby mode for <1 μA current consumption
- 16 programmable fade in and fade out times: 0.1 sec to 5.5 sec; Choose from linear, square, or cubic rates
- Fading override
- I2C-compatible interface for all programming
- Dedicated reset pin and built-in power-on reset (POR)
- Short-circuit, overvoltage, and overtemperature protection
- Internal soft start to limit inrush currents
- Input-to-output isolation during faults or shutdown
- Operation down to VIN = 2.5 V with undervoltage lockout (UVLO) at VIN = 2.0 V
- Small lead frame chip scale package (LFCSP)
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Data Sheets
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| ADP8861ACBZ-R7 Production | CHIPS W/SOLDER BUMPS/WLCSP | REEL 3000 | -40 to 85C | 0 | 0.99 | Y |
| ADP8861ACPZ-R7 Production | 20 ld LFCSP 4x4mm (2.5EP | REEL 1500 | -40 to 85C | 0 | 0.99 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
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| ADP8861DBCB-EVALZ | Evaluation Board | 170 | Y |
Reference Materials
