AS3418 datasheet(32/78 Pages) AMSOSRAM

32 / 78 page

Document Feedback

AS3418

Functional Description

Datasheet

• PUBLIC

DS000507

• v4-00 • 2020-Jan-23

│ 31

Figure 37:

Power Up Conditions

Source

Description

MODE/CSCL pin

Depending on the operation mode the power up/down pin

MODE/CSCL pin behaves differently:

Slider Mode: Mode pin has to be driven high turn on the device. Since

the timing can be programmed the value depends also on

POWER_UP_BUT_TIME register setting. With default configuration of

POWER_UP_BUT_TIME register typ. button press time is ~16ms.

Full Slider Mode: Mode pin has to be driven high turn on the device.

Since the timing can be programmed the value depends also on

POWER_UP_BUT_TIME register setting. With default configuration of

POWER_UP_BUT_TIME register typ. button press time is ~16ms.

Push Button Mode: Mode pin has to be driven high turn on the device.

Since the timing can be programmed the value depends also on

POWER_UP_BUT_TIME register setting. With default configuration of

POWER_UP_BUT_TIME register typ. button press time is ~16ms.

I2C start condition

In I2C mode, an I2C start condition turns on the device. For this startup

function I2C_MODE bit must be set in the EEPROM register.

The chip automatically powers down if one of the following conditions arises:

Figure 38:

Power Down Conditions

Source

Description

MODE/CSCL pin

Depending on the operation mode the power MODE/CSCL pin

behaves differently:

Slider Mode: Mode pin has to be driven low for min. 10ms to turn off

the device

Full Slider Mode: Mode pin has to be driven low for min. 10ms to turn

off the device

Push Button Mode: Mode pin has to be high for the time defined in

PWR_DOWN_BUT_TIME register to turn off the device.

I2C power down

command

Power down by serial interface is initiated by clearing the PWR_HOLD

bit. (Please mind that the I2C_MODE bit has to be set before clearing

the PWR_HOLD bit to enable the I2C power down mode)

VNEG over current

Power down if VNEG is higher than the VNEG off-threshold.

6.7.1

Start-Up Sequence

The AS3418 has a defined startup sequence. Once the AS3418 MODE pin is pulled high, the device

initiates the automatic startup sequence shown in Figure 39 or Figure 40 depending on the operation

AS3418 Folha de dados(PDF) 32 Page - ams-OSRAM AG

AS3418 Folha de dados(HTML) 32 Page - ams-OSRAM AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

Folha de dados Download

Ligação URL