MIC24045 Datasheet, PDF (27/46 Pages) Microchip Technology – I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

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.
TABLE 6-1: STANDARD DEFAULT SETTINGS
Full Part Number
Code
V_OUT (V)
MIC24045-2ZYFL
2Z
0.64
MIC24045-DIYFL
DI
1.0
MIC24045-EIYFL
EI
1.2
MIC24045-JFYFL
JF
3.3
MIC24045-KDYFL
KD
5.0
When power is cycled, the MIC24045
user-programmable registers return to 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 V_DDA voltage UVLO
does (see Functional Block Diagram).
Frequency
310 kHz
780 kHz
780 kHz
570 kHz
570 kHz
Load Current
2A
5A
5A
5A
3A
Reference
Soft-Start Rate
0.16V/ms
0.38V/ms
0.38V/ms
0.38V/ms
0.38V/ms
 2016 Microchip Technology Inc.
DS20005568A-page 27