LP87322ESLASHF datasheet(34/75 Pages) TI1

34 / 75 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

LP87322B-Q1, LP87322D-Q1, LP87322E-Q1, LP87322F-Q1

SNVSAC5 – SEPTEMBER 2017

www.ti.com

Product Folder Links: LP87322B-Q1 LP87322D-Q1 LP87322E-Q1 LP87322F-Q1

Submit Documentation Feedback

8.4 Device Functional Modes

8.4.1 Modes of Operation

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

circuitry of the LP87322B/D/E/F-Q1 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 LP87322B/D/E/F-Q1 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 LP87322B/D/E/F-Q1 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

LP87322E/F Datasheet(PDF) 34 Page - Texas Instruments