MIC2150 Datasheet, PDF (7/27 Pages) Micrel Semiconductor – 2-Phase Dual Output PWM Synchronous Buck Control IC

Micrel, Inc.
Typical Characteristics
CS Pin Current Source
vs V
IN
230
220
210
200
190
180
1700 _{2 4 6 8 10 12 14 16}
V_IN (V)
Input Current
vs. Input Voltage
8 _ENABLED
7
6
5
EN = 2.5V
4
3
EN = 1.5V
2
1
00
5 10 15 20
INPUT VOLTAGE (V)
CH2 Enable Thresholds
vs. Input Voltage
2.30
2.20
2.10
CH2 On
2.00
CH2 Off
1.90
1.80
1.700 _{2 4 6 8 10 12 14 16}
INPUT VOLTAGE (V)
95%
90%
85%
80%
75%
70%
65%
60%0
Efficiency
vs. Output Current
V = 5V
IN
V = 9V
IN
V = 12V
IN
V = 1.8V
OUT
5
10 15 20
OUTPUT CURRENT (A)
August 2009
CS Pin Source Current
vs Temperature
220
V = 14.5V
IN
210
200
190
180
170
160
TEMPERATURE (°C)
VDD Regulator
vs. Temperature
5.2
V = 7V
5.1
IN
5
V = 6V
IN
4.9
V = 5V
4.8
IN
4.7
4.6
4.5 _{I = -50mA}
VDD
4.4
TEMPERATURE (°C)
130%
128%
126%
124%
122%
120%
118%
116%
114%
112%
110%1
OVP Threshold
vs. Reaction Time
10
100
T_PULSE (µs)
1000
Efficiency
vs. Output Current
95%
90%
85%
80%
V = 7V
IN
V = 11V
IN
75%
70%
65%
60%0
V = 3.3V
OUT
5
10 15 20
OUTPUT CURRENT (A)
7
MIC2150
Input Current
vs. Input Voltage
120
EN = 0
100
80
60
40
20
00
5
10
15
INPUT VOLTAGE (V)
CH1 Enable Thresholds
vs. Input Voltage
1.20
1.15
CH1 On
1.10
1.05
1.00
CH1 Off
0.95
0.90
0.85
0.800 _{2 4 6 8 10 12 14 16}
INPUT VOLTAGE (V)
Power Good Thresholds
vs. Input Voltage
93%
91%
89%
PG HIGH
87%
85%
PG LOW
83%
81%0 _{2 4 6 8 10 12 14 16}
INPUT VOLTAGE (V)
Max. Duty Cycle
vs. V
90%
SS
80%
70%
60%
50%
40%
30%
20%
10%
0%
V_SS (V)
M9999-082809-A
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