Applications
The ADP1650 is a very compact, highly efficient, single white LED flash driver for high resolution camera phones that improves picture and video quality in low light environments. The device integrates a programmable 1.5 MHz or 3 MHz synchronous inductive boost converter, an I2C-compatible interface, and a 1500 mA current source. The high switching frequency enables the use of a tiny, 1 mm high, low cost, 1 μH power inductor, and the current source permits LED cathode grounding for thermally enhanced, low EMI, and compact layouts.
The LED driver maximizes efficiency over the entire battery voltage range to maximize the input-power-to-LED-power conversion and to minimize battery current draw during flash events. A programmable dc battery current limit safely maximizes LED current for all LED VF and battery voltage conditions.
Two independent TxMASK inputs permit the flash LED current and battery current to reduce quickly during a power amplifier current burst. The I2C-compatible interface enables the pro-grammability of timers, currents, and status bit readback for operation monitoring and safety control.
The ADP1650 comes in a compact 12-ball, 0.5 mm pitch WLCSP package and operates within specification over the full −40°C to +125°C junction temperature range.
Features and Benefits
| Power Management |
| Document | note |
| ADP1650: 1.5 A LED Flash Driver with I2C-Compatible Interface Data Sheet (Rev. B) | PDF 1072 kB |
| Document | note |
| UG-139: Evaluation Board User Guide for ADP1650 | PDF 1698 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADP1650ACBZ-R7 Production | 12 ball WLCSP (1.54x2.04) | REEL 3000 | -40 to 125C | 0 | 0.95 | Y |
| ADP1650ACPZ-R7 Production | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 125C | 0 | 0.95 | Y |
