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8.4 Device Functional Modes

SOFTWARE RESET

STANDBY

UVLO = L AND t > tPOR_H

From all states

RESET = FF

SHUTDOWN

EN = L

From all states

VCC Power Up

Chip_EN = 1 AND t > tCHIP_EN

Chip_EN = 0

NORMAL

THERMAL

SHUTDOWN

TSD=H

TSD=L

HARDWARE POR

EN = H

From all states

UVLO = H

Figure 8-13. Device Functional Modes

• SHUTDOWN: The device enters into SHUTDOWN mode from all states on VCC power up or EN pin is low.

• HARDWARE POR: The device enters into HARDWARE POR when Enable pin is high or VCC fall under VUVF

causing UVLO=H from all states.

• SOFTWARE RESET: The device enters into SOFTWARE RESET mode when VCC rise higher than VUVR

with the time t > tPOR_H. In this mode, all the registers are reset. Entry can also be from any state when the

RESET (register) = FFh or UVLO is low.

• STANDBY: The device enters the STANDBY mode when Chip_EN (register) = 0. In this mode, device enters

into low power mode, but the I2C/SPI are still available for Chip_EN only and the registers’ data are retained.

• NORMAL: The device enters the NORMAL mode when 'Chip_EN' = 1 with the time t > tCHIP_EN.

• THERMAL SHUTDOWN: The device automatically enters the THERMAL SHUTDOWN mode when the

junction temperature exceeds 160°C (typical). If the junction temperature decreases below 145°C (typical),

the device returns to the NORMAL mode.

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LP5860T

SNVSCE1 – MAY 2023

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