MIC5167_12 Datasheet, PDF (6/23 Pages) Micrel Semiconductor – 1MHz, 6A, Integrated Switch, High-Efficiency, Synchronous Buck DDR Memory Terminator

Micrel, Inc.
Typical Characteristics
V_IN Operating Supply Current
vs. Input Voltage
20
16
12
8
VTT = 0.6V
IOUT = 0A
4
SWITCHING
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
1.0%
0.8%
0.6%
Load Regulation
vs. Input Voltage
V_TT = 0.6V
IOUT = 0A to 6A
0.4%
0.2%
0.0%
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
1100
1050
1000
950
900
850
VTT = 0.6V
IOUT = 0A
800
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
VIN Shutdown Current
vs. Input Voltage
20
V_EN/DLY = 0V
16
12
8
4
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
20
15
10
5
VTT = 0.6V
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Enable Input Current
vs. Input Voltage
5
V_EN/DLY = 0V
4
3
2
1
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
MIC5167
0.510
V_TT/V_DDQ Tracking Ratio
vs. Input Voltage
0.505
0.500
0.495
V_TT = 0.9V
IOUT = 0A
0.490
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
0.510
0.505
VTT/VDDQ Tracking Ratio
vs. VDDQ
V_IN = 5.0V
I_OUT = 0A
0.500
0.495
0.490
0.6 0.8 1.0 1.2 1.4 1.6 1.8
VDDQ (V)
Power Good Window/V_TT Ratio
vs. Input Voltage
120%
110%
100%
90%
80%
70%
60%
2.5
V_TT = 0.6V
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
January 2012
6
M9999-012312-B