LP8733 datasheet(37/86 Pages) TI

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7.4 Device Functional Modes

7.4.1 Modes of Operation

SHUTDOWN: The V(VANA) voltage is below VANAUVLO threshold level. All switch, reference, control, and bias

circuitry of the LP8733xx device are turned off.

READ OTP:

The main supply voltage V(VANA) is above VANAUVLO level. The regulators are disabled, and the

reference and bias circuitry of the LP8733xx are enabled. The OTP bits are loaded to registers.

STANDBY:

The main supply voltage V(VANA) is above VANAUVLO level. The regulators are disabled, and the

reference, control, and bias circuitry of the LP8733xx are enabled. All registers can be read or

written by the host processor through the system serial interface. The regulators can be enabled

if needed.

ACTIVE:

The main supply voltage V(VANA) is above VANAUVLO level. At least one regulator is enabled. All

registers can be read or written by the host processor through the system serial interface.

The operating modes and transitions between the modes are shown in Figure 7-15.

SHUTDOWN

STANDBY

ACTIVE

REGULATORS

ENABLED

READ

OTP

REG

RESET

2C RESET

FROM ANY STATE

EXCEPT SHUTDOWN

REGULATORS

DISABLED

V(VANA) < VANAUVLO

V(VANA) > VANAUVLO

Figure 7-15. Device Operation Modes

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LP8733

SNVSBK2A – SEPTEMBER 2019 – REVISED JUNE 2021

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