The LP87702-Q1 is designed to meet the power management requirements of the latest
platform needs especially in automotive radar, camera and cluster applications. The device contains
two step-down DC-DC converters, a 5-V boost converter,
two voltage monitoring inputs for external power supplies, window watchdog and general purpose
digital output signals. The device is controlled by an I2C-compatible
serial interface and by enable signals.
The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output
current range for both boost and buck regulators. The LP87702-Q1 supports remote voltage sensing
for buck regulators to compensate IR drop between the regulator output and the point-of-load thus
improving the accuracy of the output voltage. In addition the switching clock can be forced to PWM
mode and also synchronized to an external clock to minimize the disturbances.
The LP87702-Q1 device supports buck regulator load current measurement without the
addition of external current sense resistors. In addition, the LP87702-Q1 device supports
programmable start-up and shutdown delays and sequences including general purpose digital output
signals synchronized to the enable signal. During start-up and voltage change, the device controls
the output slew rate to minimize output voltage overshoot and the inrush current.
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