Texas Instruments LP876242-Q1, User Manual

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1 Introduction
The LP876242-Q1 power management integrated circuit (PMIC) family is extremely flexible and scalable,
providing configurability at the device and system level. At the device level, a single PMIC provides four separate
step down converters (BUCK regulators). These BUCK regulators have been tested to conform with the radar
specification and are switched at 8.8 MHz switching frequency. The LP876242-Q1 evaluation module (EVM) is
both an evaluation and development tool. With the EVM both device level and system level configurability are
available through an easy to use graphical user interface (GUI) tool.
2 Getting Started
Only a power supply and the EVM are required to evaluate and test the LP876242-Q1 default configuration
under load conditions. To start evaluating the LP876242-Q1 follow the following steps.
1. Connect power to the EVM.
2. Connect the EVM to the host PC through the USB. In the event that the power is provided by the USB cable,
apply the appropriate jumper connection to cVBUS and VCCA see Table 3-5 .
3. Launch the GUI and evaluate.
Terminal J7, labeled VCCA in Figure 2-1 , can accept wire gauges up to 14 AWG. The voltage supplied must be
within the input range of the device, 2.8 V to 5.5 V. The power supply providing the input to VCCA is required to
supply 135 % of the output power. Once power has been supplied to VCCA, the GPIO4 / ENABLE jumper can
be used to power on the output rails. The default ON Request for the device is the ENABLE pin which is a level
sensitive input. Please refer to
LP876242-Q1 data sheet for more details.
Figure 2-1 shows the top side of the LP876242Q1EVM.
Figure 2-1. EVM Top View
www.ti.com Introduction
SLVUC20A – MARCH 2021 – REVISED AUGUST 2022
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