MIC2810_08 Datasheet, PDF (8/18 Pages) Micrel Semiconductor – Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs

Micrel, Inc.
MIC2810
Typical Characteristics ― DC/DC LOWQ Mode (/LOWQ = GND)
Power Supply
Rejection Ratio
80
70
60
50
40
30 _{VIN = 3.6V}
20 ^VOUT ^{= 1.2V}
C_OUT = 2.2µF
10 IOUT = 5mA
/LowQ = GND
0
0.01 0.1 1 10 100
FREQUENCY (kHz)
1000
Current Limit
vs. Input Voltage
380
340
300
260
220
180
140
100
60
/LowQ = GND
20
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
Load Regulation
1.24
1.23
1.22
1.21
1.20
1.19
1.18
1.17
1.16
0
C_OUT = 2.2µF
V_IN = 3.6V
/LowQ = GND
10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
Output Noise
Spectral Density
10
1
0.1
0.01 VIN = 4.2V
V_OUT = 1.2V
C_OUT = 2.2µF
/LowQ = GND
0.001
0.01 0.1 1 10
100 1,000 10,000
FREQUENCY (kHz)
Line Regulation
1.30
1.25
1.20
1.15
C_OUT = 2.2µF
V_IN = 3.6V
I_OUT = 20mA
/LowQ = GND
1.120.7 _{3.1 3.5 3.9 4.3 4.7 5.1 5.5}
INPUT VOLTAGE (V)
February 2008
8
M9999-022008-C