The bq25046 is a highly integrated linear power supply IC targeted at both wired and wireless power applications. With an accurate 5-V regulated output and integrated 3.3-V LDO, the bq25046 is an ideal solution for wireless power supply solutions up to 5 W.
The bq25046 integrates several functions which enable a wireless charging solution within a small area and low component count. These include a 3.3-V LDO which drives an MSP430BQ1010 wireless controller, high-accuracy current sense for calculating receiver-side power usage, 100mA/400mA current limits enable robust communication at all load current levels, and integrated pass FET acts as load disconnect switch and 5-V regulator to protect downstream circuitry. In addition, the bq25046 has an absolute maximum input voltage of 30 V and an OVP threshold of 15 V, which enables safe and robust operation in inductive power transfer systems that use either resistive or capacitive load modulation.
| Number of series cells | 1 |
| Charge current (max) (A) | 1.1 |
| Vin (max) (V) | 9 |
| Cell chemistry | Li-Ion/Li-Polymer |
| Battery charge voltage (min) (V) | 3.3 |
| Battery charge voltage (max) (V) | 3.3 |
| Absolute max Vin (max) (V) | 30 |
| Control topology | Linear |
| Control interface | Standalone (RC-Settable) |
| Features | IC thermal regulation, Integrated LDO |
| Vin (min) (V) | 3.3 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| WSON (DQC) | 10 | 6 mm² 3 x 2 |
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