MIC24045 Datasheet, PDF (13/46 Pages) Microchip Technology – I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

MIC24045
Note: Unless otherwise indicated, V_IN = 12V, f_S = 660 kHz, I_LIM = I_{LIM_LS3}, L = 2.2 µH, T_A = +25°C.
V_IN
5V/div
V_OUT
500 mV/div
PG
5V/div
IL
2A/div
10 ms/div
FIGURE 2-29:
Power-up into Short Circuit,
(EN = V_DDA, no I²C programming, registers
default values for 2Z version).
V_OUT
1V/div
IL
5A/div
AC coupled
I_OUT
5A/div
PG
5V/div
20 ms/div
FIGURE 2-32:
Hiccup Mode Short Circuit
Current Limit Response.
EN
2V/div
V_OUT
500 mV/div
PG
5V/div
IL
2A/div
FIGURE 2-30:
4 ms/div
Enable into Short Circuit.
V_OUT
1V/div
IL
5A/div
AC coupled
I_OUT
5A/div
PG
5V/div
FIGURE 2-31:
Threshold.
1 ms/div
Output Current Limit
FIGURE 2-33:
Response.
I_OUT
500 mA/div
PG
5V/div
100 ms/div
Thermal Shutdown
V_OUT
1V/div
SW
10V/div
I_OUT
500 mA/div
PG
5V/div
V_OUT
1V/div
SW
10V/div
FIGURE 2-34:
Shutdown.
10 ms/div
Recovery from Thermal
 2016 Microchip Technology Inc.
DS20005568A-page 13