LP87332D datasheet(34/74 Pages) TI1

34 / 74 page

SHUTDOWN

STANDBY

ACTIVE

REGULATOR

ENABLED

READ

OTP

REG

RESET

C RESET

FROM ANY STATE

EXCEPT SHUTDOWN

REGULATOR(S)

DISABLED

V(VANA) < VANAUVLO

V(VANA) > VANAUVLO

LP87332D

SNVSAU6 – NOVEMBER 2017

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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 LP87332D 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 LP87332D 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 LP87332D are enabled. All registers can be read or

written by the host processor via 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 via the system serial interface.

The operating modes and transitions between the modes are shown in Figure 18.

Figure 18. Device Operation Modes

LP87332D Datasheet(PDF) 34 Page - Texas Instruments