TC35680FSG datasheet(17/91 Pages) TOSHIBA

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TC35680FSG-002/TC35681FSG-002

2019-04-04

2.5. Power Supply Pins

The attribute and the normal operation voltage of each power supply pin are shown in Table 2-6.

Table 2-6 Power supply pin

Pin name

Pin No.

Attribute

Description

QFN

Package

Type

VDD/GND

VPGM

TEST

—

Power supply pin for test.

This pin should be connected to GND.

VBAT

VDD

Power supply pin for DC/DC converter/LDO regulator and the

sleep circuit.

An external power supply should be connected to this pin to

operate the built-in DC/DC converter and LDO regulator.

VBAT

VDD

DC/DC converter output pin.

When the DC/DC converter is used, the power is supplied to

VDDCORE1 and VDDCORE2 from this pin. An external coil

for the DC/DC converter should be connected.

For details, refer to Section 4.4.

Any other use is not possible.

VDDCORE1

—

VDD

Power supply input pin for the analog circuit.

The LX pin supplies power when the DC/DC converter is

used. And the VDDCORE2 pin supplies power when the

transition to a low power mode is done or when the LDO is

used. This pin should be connected to the VDDCORE2 pin.

For details, refer to Section 4.4.

Any other use is not possible.

VDDCORE2

—

VDD

A feedback input pin for the DC/DC converter. It is also a

power supply pin for the analog and digital circuits, and the

output pin of the built-in LDO regulator, as well.

When the DC/DC converter is used, this pin is a feedback

input pin. A coil should be connected between this pin and the

LX pin. When the built-in LDO regulator is used, this pin is an

output pin of the regulator. The internal circuits connected to

VDDCORE1 and VDDCORE2 are supplied with the power.

For details, refer to Section 4.4.

Any other use is not possible.

VDDIO

VDD

Power supply pin for I/O.

The power of the proper voltage for the GPIO circuits should

be supplied. The voltage should not exceed the VBAT value.

For details, refer to Section 4.4.

Any other use is not possible.

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