MIC4930 Datasheet, PDF (9/24 Pages) Micrel Semiconductor – Hyper Speed Control 3A Buck Regulator

MIC4930
EN
(2V/div)
V_OUT
(500mV/div)
PG
(2V/div)
V_IN = 3.0V
V_OUT = 1.2V
I_OUT = 0A
FIGURE 2-19:
Time (2ms/div)
Enable Turn-On (No Load).
EN
(2V/div)
V_OUT
(500mV/div)
PG
(2V/div)
V_IN = 3.0V
V_OUT = 1.2V
I_OUT = 1A
FIGURE 2-20:
Time (100μs/div)
Enable Turn-On (1A Load).
EN
(2V/div)
V_IN = 3.0V
V_OUT = 1.2V
I_OUT = 1A
V_OUT
(500mV/div)
PG
(2V/div)
FIGURE 2-21:
Time (100μs/div)
Enable Turn-Off (1A Load).
EN
(2V/div)
V_OUT
(1V/div)
PG
(1V/div)
I_L
(500mA/div)
FIGURE 2-22:
Rising).
Time (4ms/div)
1.4V Pre-Bias Start-Up (EN
V_{OUT RIPPLE}
(10mV/div)
I_L
(200mA/div)
V_IN = 3.0V
V_OUT = 1.2V (AC-Coupled)
I_OUT = 0A
SW Node
(2V/div)
FIGURE 2-23:
(I_OUT = 0A).
Time (200ns/div)
Switching Waveforms
V_OUT
(10mV/div)
I_L
(500mA/div)
SW Node
(2V/div)
FIGURE 2-24:
(I_OUT = 1A).
V_IN = 3.0V
V_OUT = 1.2V (AC-Coupled)
I_OUT = 1A
Time (200ns/div)
Switching Waveforms
 2016 Microchip Technology Inc.
DS20005669A-page 9