ADP8861
ADP8861
PRODUCTIONCharge Pump, 7-Channel Smart LED Driver with I2C Interface
- Part Models
- 2
- 1ku List Price
- Starting From $1.49
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Overview
- Charge pump with automatic gain selection of 1×, 1.5×, and 2× 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 time
- 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
- Available in a small 20-ball, 2.15 mm × 2.36 mm × 0.6 mm WLCSP or a 20-lead, 4 mm × 4 mm × 0.75 mm LFCSP
The ADP8861 provides a powerful charge pump driver with independent control of up to seven LEDs. These seven LEDs can be independently driven up to 30 mA (typical). The seventh LED can also 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.
This entire configuration is driven by a two-capacitor charge pump with gains of 1×, 1.5×, and 2×. The charge pump 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.
APPLICATIONS
- Mobile display backlighting
- Mobile phone keypad backlighting
- Dual RGB backlighting
- LED indication
- General backlighting of small format displays
Documentation
Data Sheet 1
User Guide 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP8861ACBZ-R7 | 20-Ball WLCSP (1.955m x 2.355mm) | ||
| ADP8861ACPZ-R7 | 20-Lead LFCSP (4mm x 4mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 28, 2012 - 11_0175 Shipping Changes for WLCSP Products with 8mm Carrier Tape Width |
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| ADP8861ACBZ-R7 | PRODUCTION | |
|
Oct 21, 2016 - 16_0229 Assembly Transfer of Select LFCSP Products to ASE Korea |
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| ADP8861ACPZ-R7 | PRODUCTION | |
|
May 11, 2014 - 13_0231 Assembly Transfer of Select 4x4 and 5x5mm LFCSP Products to STATS ChipPAC China. |
||
| ADP8861ACPZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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