MIC2155_0911 Datasheet, PDF (10/35 Pages) Micrel Semiconductor – Two-Phase, Single-Output, PWM Synchronous Buck Control IC

Micrel, Inc.
Typical Characteristics (cont.)
0.6980
0.6975
0.6970
0.6965
0.6960
0.6955
0.69504
Feedback Voltage
vs. Input Voltage
6 8 10 12 14 16
INPUT VOLTAGE (V)
Differential Amplifier Gain
1.022
vs. Temperature
1.020
1.018
1.016
1.014
1.012
1.010
1.008 V = 12V
IN
1.006
V = 5V
IN
1.004
1.002
1.000
TEMPERATURE (°C)
R LowSide Drive
DSON
Source/Sink
1.8
V = 5V
1.7 ^IN
SINK
1.6
1.5
1.4
SOURCE
1.3
1.2
1.1
1
TEMPERATURE (°C)
CS Pin Current
vs. Input Voltage
200
199
198
197
196
195
194
193
192
191
1904 _{6 8 10 12 14 16}
INPUT VOLTAGE (V)
Soft Start Current
vs. Temperature
3.5
3
V = 12V
IN
2.5
2
V = 5V
IN
1.5
1
0.5
0
TEMPERATURE (°C)
MIC2155/2156
CS Pin Current
vs. Temperature
220
V = 12V
IN
210
200
V_IN = 5V
190
180
170
160
TEMPERATURE (°C)
R High Side Drive
DSON
Source/Sink
2.2
2.1
V = 5V
IN
2.0
SINK
1.9
1.8
1.7
SOURCE
1.6
1.5
1.4
1.3
1.2
TEMPERATURE (°C)
November 2009
10
M9999-111209-B