MIC23450_13 Datasheet, PDF (5/22 Pages) Micrel Semiconductor – 3MHz, PWM, 2A Triple Buck Regulator with HyperLight Load® and Power Good

Micrel, Inc.
Typical Characteristics
100%
90%
Efficiency vs. Output Current
V_OUT = 1.8V
V_IN = 3V
80%
70%
60%
50%
V_IN = 5V ^{VIN = 3.6V}
40%
30%
20%
10%
0%
0.001
0.01
0.1
1
10
OUTPUT CURRENT (A)
Shutdown Current
vs. Input Voltage
180
160
140
120
100
80
60
40
20
0
2
3
4
5
6
INPUT VOLTAGE (V)
Output Voltage
vs. Output Current (HLL)
1.9
1.88
1.86
1.84
V_IN = 5V
V_IN = 3.6V
1.82
1.8
1.78
V_IN = 3V
1.76
1.74
1.72
V_OUT = 1.8V
1.7
0
0.03 0.06 0.09 0.12 0.15 0.18
LOAD CURRENT (A)
MIC23450
Efficiency vs. Output Current
V_OUT = 2.5V
100%
8
90%
V_IN = 3V
7
80%
6
70%
60%
V_IN = 3.6V
V_IN = 5V
5
50%
4
40%
3
30%
2
20%
10%
1
0%
0
0.001
0.01
0.1
1
10
2
OUTPUT CURRENT (A)
Current Limit
vs. Input Voltage
CH1 = 2.5V
CH2 = 1.8V
CH3 = 1.2V
3
4
5
6
INPUT VOLTAGE (V)
Line Regulation
(Low Loads)
1.9
1.85
1.8
1.75
I_OUT = 120mA
I_OUT = 1mA
I_OUT = 20mA
1.7
2 2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
Line Regulation
(High Loads)
1.9
1.85
1.8
1.75
1.7
I_OUT = 1A
I_OUT = 2A
1.65
2 2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
Output Voltage
vs. Output Current (CCM)
1.9
1.88
1.86
1.84
1.82
1.8
V_IN = 5V
V_IN = 3.6V
1.78
1.76
1.74
1.72 V_OUT = 1.8V
V_IN = 3V
1.7
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
LOAD CURRENT (A)
Output Voltage
vs. Temperature
1.84
1.82
1.80
V_IN = 5.5V
V_IN = 3.6V
1.78
1.76
V_IN = 2.7V
1.74
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
November 5, 2013
5
110513-1.1