The ADP1829ACPZ-R7 is a versatile dual interleaved synchronous PWM Buck Controller that generates two independent output rails from an input of 3 to 20V, with power input voltage ranging from 1 to 24V. Each controller can be configured to provide output voltages from 0.6V to 85% of the input voltage and is sized to handle large MOSFETs for point-of-load regulators. The two channels operate 180° out of phase, reducing stress on the input capacitor and allowing smaller, low cost components. It operates at a pin-selectable, fixed switching frequency of either 300 or 600kHz, minimizing external component size and cost. For noise-sensitive applications, it can also be synchronized to an external clock to achieve switching frequencies between 300kHz and 1MHz. It includes soft start protection, reverse current protection during soft start, as well as unique adjustable lossless current-limit scheme utilizing external MOSFET sensing.
- Soft start, thermal overload, current-limit protection
- 10μA Shutdown supply current
- Internal linear regulator
- Lossless RDSON current-limit sensing
- Independent power OK outputs
- Voltage tracking for sequencing or DDR termination
- Interleaved operation results in smaller input capacitor
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