P9242-R3 datasheet(6/44 Pages) RENESAS

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P9242-R3/RB Datasheet

May 17, 2019

2. Pin Descriptions

Table 1.

Pin Descriptions

Pins

Name

Type

Function

Input

Active-LOW enable pin. When connected to logic HIGH, the P9242-R3 enters the

Shut-Down Mode, which has a typical current consumption of 25µA. When

connected to logic LOW, the device is in normal operation.

2, 6, 34, 41, EP GND

–

Ground connection.

PREG

Output

Regulated 5V output used for internal device biasing. Connect a 1µF capacitor from

this pin to ground. This pin must not be externally loaded.

VIN

Input

Input power supply. Connect a 10µF capacitor from this pin to ground.

SW_S

Output

Step-down regulator`s switch node. Connect one of the terminals of the 4.7µH

inductor to this pin.

LDO33

Output

Regulated 3.3V output used for internal device biasing. Connect a 1µF capacitor

from this pin to ground. This pin should not be externally loaded.

VIN_LDO

Input

Linear regulator input power supply. Connected this pin to the 5V output of the step-

down regulator.

LDO18

Output

Regulated 1.8V output used for internal device biasing. Connect a 1µF capacitor

from this pin to ground. This pin should not be externally loaded.

LED1

Output

Open-drain output. Connect an LED to this pin

LED2

Output

Open-drain output. Connect an LED to this pin.

VDDIO

Input

Input power supply for internal biasing. This pin must be connected to LDO33.

D-

Input

Logic I/O for USB travel adaptor detection.

D+

Input

Logic I/O for USB travel adaptor detection.

SCL

Input

I2C interface clock input. Connect a 5.1kΩ pull-up resistor to the LDO33 rail.

SDA

I/O

I2C interface data input and data output. Connect a 5.1kΩ pull-up resistor to the

LDO33 rail.

ILIM/FOD

Input

Programmable over-current limit and foreign object detection pin. Connect the center

tap of the resistor divider to this pin to set the current-limit threshold and FOD

threshold. For more information, see section 7.1.

LED/Q-Fact

Input

Programmable LED pattern selection and Q-factor enable/disable. Connect the

center tap of a resistor divider to this pin. For more information on setting the LED

pattern and Q-factor enable/disable, see section 7.8 for more details.

VCOIL

Input

Input for coil voltage sensing.

Input

Remote temperature sensor for over-temperature shutdown. Connect to the NTC

thermistor network. If not used, connect to the LDO33 pin through a 10kΩ resistor.

Do not leave the TS pin floating.

LOAD

Output

An external microcontroller (MCU) can use this signal to synchronize data upload.

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