MIC23451 Datasheet, PDF (6/20 Pages) Micrel Semiconductor – 3MHz, 2A Triple Synchronous Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
PG Delay Time
vs. Input Voltage
100
80
PG RISING
60
40
20
PG FALLING
0
2
3
4
5
6
INPUT VOLTAGE (V)
PG Thresholds
vs. Input Voltage
0.91
0.90
PG RISING
0.89
0.88
0.87
0.86
0.85
PG FALLING
0.84
0.83
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
Enable Threshold
vs. Input Voltage
1.2
1.1
1.0
0.9
0.8
0.7
0.6
T_AMB = 25°C
0.5
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
Enable Threshold vs.
Temperature
1.0
0.9
0.8
0.7
0.6
V_IN = 3.6V
0.5
-60 -40 -20 0 20 40 60 80
TEMPERATURE (°C)
100 120
VFB
vs. Temperature
0.640
0.635
0.630
0.625
V_IN = 5.5V
0.620
0.615
0.610
V_IN = 3.6V
V_IN=2.7V
0.605
0.600
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
MIC23451
UVLO Threshold
vs. Temperature
2.57
UVLO RISING
2.55
2.53
2.51
UVLO FALLING
2.49
2.47
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
10000
Switching Frequency
vs. Load Current
1000
100
10
V_IN = 3V
V_IN = 3.6V
V_IN = 5V
1
0.1
0.0001
V_OUT = 1.8V
0.001 0.01
0.1
1
10
OUTPUT CURRENT (A)
November 5, 2013
6
Revision 1.2