MIC23156 Datasheet, PDF (7/22 Pages) Micrel Semiconductor – 1.5A, 3MHz Synchronous Buck Regulator with HyperLight Load® and I2C Control for Dynamic Voltage Scaling

Micrel, Inc.
Typical Characteristics (Continued)
1.9
1.875
1.85
1.825
1.8
1.775
1.75
1.725
1.7
2.5
Line Regulation
(HLL)
I_OUT = 20mA
I_OUT = 1mA
I_OUT = 120mA
V_OUTNOM = 1.8V
C_OUT = 2.2µF
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
Load Regulation
1.9
1.875
1.85
1.825
1.8
1.775
1.75
1.725
1.7
0
V_IN = 3.6V
V_OUTNOM = 1.8V
C_OUT = 2.2µF
250 500 750 1000 1250 1500
OUTPUT CURRENT (mA)
Enable Threshold
vs. Input Voltage
1.2
1.1
ENABLE RISING
1
0.9
ENABLE FALLING
0.8
0.7
0.6
0.5
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
PGOOD Threshold
vs. Input Voltage
100%
95%
90%
PGOOD RISING
85%
80%
PGOOD FALLING
75%
70%
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
Δ Output Voltage
vs. DAC DNL
11
10.5
10
9.5
9
0
I_OUT = 250mA
C_OUT = 2.2µF
25 50 75 100 125 150 175
DAC VOLTAGE CODE
Switching Frequency
vs. Temperature
5
4
3
2
1
0
-40 -20
V_IN = 3.6V
V_OUTNOM = 1.0V
C_OUT = 2.2µF
0 20 40 60 80 100 120
TEMPERATURE (°C)
MIC23156
Output Voltage
vs. Temperature
1.020
1.015
1.010
1.005
1.000
0.995
0.990
0.985
0.980
-40 -20
V_IN = 3.6V
V_OUT = 1.0V
I_OUT = 10mA
0 20 40 60 80 100 120
TEMPERATURE (°C)
Output Voltage
vs. DAC Linearity
2.6
2.2
1.8
1.4
1
0.6
0
I_OUT = 250mA
C_OUT = 2.2µF
25 50 75 100 125 150 175
DAC VOLTAGE CODE
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
10
Switching Frequency
vs. Output Current
1.0µH
2.2µH
V_OUT = 1.8V
C_OUT = 2.2µF
100
1000
OUTPUT CURRENT (mA)
10000
April 22, 2013
7
Revision 1.0