BQ25858-Q1, BQ25858B-Q1 are automotive grade, wide input voltage, bidirectional switched-mode buck-boost controllers. The devices offer high-efficiency regulation over a wide voltage range with output CC-CV control. The devices integrate all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the devices draw power from the output supply and regulate the input terminal voltage with an added constant current loop for protection.
Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | BQ25858-Q1/858B-Q1: Automotive, I2C Controlled, Bidirectional Buck-Boost Controllers with Wide Voltage Range datasheet | PDF | HTML | 31 Mar 2025 |
| EVM User's guide | BQ25858-Q1EVM BQ25858B-Q1EVM Evaluation Module User's Guide (Rev. A) | PDF | HTML | 30 Apr 2025 |
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The BQ25858 and BQ25858B evaluation modules (EVM) are a complete evaluation system for the BQ25858-Q1 and the BQ25858B-Q1 ICs. The EVMs have a max input and output of 55V and a max output current of 10A.
The BQ25858-Q1 and BQ25858B-Q1 ICs are wide voltage, bidirectional switched-mode buck-boost (...)
The BQ25858 evaluation module (EVM) is a complete evaluation systems for the BQ25858-Q1 IC. The BQ25858EVM has a max input and output of 55V and a max output current of 10A.
The BQ25858-Q1 IC is a wide voltage, bidirectional switched-mode buck-boost controller. This device offers high-efficiency (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RRV) | 36 | Ultra Librarian |
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