MIC24045 datasheet(27/46 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005568A-page 27

MIC24045

6.0

MIC24045 DEFAULT SETTINGS

VALUES AT POWER-UP

Part number MIC24045-XXYFL also designates

different default settings values at power-up, before

any I2C writing operation takes place. These values are

programmed at factory.

Different default settings are obtained by burning an

OTP memory (fuses). The XX code corresponds to a

certain combination of output voltage, switching

frequency, nominal load current and soft-start ramp

rate. Start-up delay and voltage margining always

default to 0 ms and 0%. The blank (all zeros) OTP

memory option has a special code (2Z).

The standard default settings are as shown in

Table 6-1. For availability of other default settings,

contact the nearest Microchip Sales Office.

When

power

cycled,

the

MIC24045

user-programmable

registers

return

the

factory-programmed

default

settings

values,

regardless of any prior settings through I2C bus. Note

that the EN pin does NOT act as a Reset signal for the

user-programmable registers, only the internal POR

(Power-on Reset) based on the VDDA voltage UVLO

does (see Functional Block Diagram).

TABLE 6-1:

STANDARD DEFAULT SETTINGS

Full Part Number

Code

VOUT (V)

Frequency

Load Current

Reference

Soft-Start Rate

MIC24045-2ZYFL

0.64

310 kHz

0.16V/ms

MIC24045-DIYFL

1.0

780 kHz

0.38V/ms

MIC24045-EIYFL

1.2

780 kHz

0.38V/ms

MIC24045-JFYFL

3.3

570 kHz

0.38V/ms

MIC24045-KDYFL

5.0

570 kHz

0.38V/ms

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