MIC24045 Datasheet, PDF (24/46 Pages) Microchip Technology – I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

MIC24045
REGISTER 5-2: SETTING 1 – SETTING 1 REGISTER (ADDRESS 1h) (CONTINUED)
bit 7-6
ILIM<1:0>: MOSFET Current Limit bit. See the Current Limit selection in table below:
ILIM1 ILIM0
TYP Low-Side
Current Limit (A)
TYP High-Side
Current Limit (A)
Nominal Load
Current (A)
0
0
3.25
4.7
2
0
1
4.3
6.2
3
1
0
5.6
8.6
4
1
1
6.2
9.4
5
bit 5-3
Freq0 (Switching Frequency): See the Switching Frequency selection in table below:
Freq2 Freq1 Freq0
Frequency
(kHz)
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
310
400
500
570
660
780
970
1200
bit 2-0
Reserved: Unimplemented bit. Read as ‘0’.
Note 1:
2:
Default Status settings at power-up can be changed at the factory. Standard selections are described in
Section 6.0 “MIC24045 Default Settings Values at Power-Up”. Overwriting default settings by I²C has
no permanent effect and values will return to factory default values upon power cycling.
Changing Setting 1 Register values while power delivery is enabled is not recommended. To change set-
tings by I²C, set EN pin low first, then write the new configuration, and finally, set EN pin high again to
resume power delivery.
DS20005568A-page 24
 2016 Microchip Technology Inc.