See datasheet for actual packaging/pinout drawings

Package | PIN:

RHB | 32

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

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P87702DRHBRQ1-Dual Buck Converter and 5-V Boost With Diagnostic Functions

The LP87702-Q1 meets the power management requirements of the latest platforms, particularly in automotive radar and camera and industrial radar applications. The device contains two step-down DC/DC converters, a 5-V boost converter/bypass switch, two voltage monitoring inputs for external power supplies, and window watchdog. An I2C-compatible serial interface and enable signals control the device.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output current range for buck converters. The LP87702-Q1 uses remote voltage sensing for buck converters to compensate IR drop between the converter 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 for minimal disturbances.

The LP8770 device has internal circuitry specifically designed to support current measurement, eliminating the need for an external resistor. Programmable start-up and shutdown sequences synchronized to the enable signal are supported, including general purpose digital outputs. During start-up and voltage change, the device controls the output slew rate for minimum output voltage overshoot and inrush current.

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