Micrel, Inc.
MIC2808
Parameter
Turn-On Time
DAC Input Current
Output Voltage/
Condition
I OUT = 100μA
(internally set)
Min
Typ
25
0.15
3
Max
50
2
Units
μs
μA
V/V
DAC Voltage
Bypass Switch
DAC Voltage required to enable bypass mode
1.176
1.2
1.224
V
Threshold
Bypass Switch
Hysteresis
35
mV
Bypass Transition Time
Bypass Switch
On-Resistance
Bypass Switch Leakage
Bypass Over-Current
Delay from V DAC = 1.3V to V OUT = 0.90V IN
V IN = 3.0V, I BYPASS = 100mA
1
10
95
1.4
40
150
5
2.5
μs
m ?
μA
A
Limit
Current Limit Retry Time
Current Limit Retry
Duty Cycle
LDO1/LDO2 [V EN = 0V]
32
12.5
μs
%
Total Ground Current (8)
V EN1 = V EN2 = 3.6V
220
μA
Turn-on Time
LDO1 or LDO2; C BYP = 0.1μF
30
100
μs
LDO1 [V EN = 0V]
Output Voltage Accuracy
Line Regulation
Load Regulation (6)
Dropout Voltage (7)
Ground Pin Current (8)
Ripple Rejection
Variation from nominal V OUT
–40°C to +125°C
V IN = V OUT +1V to 5.5V
I OUT = 100μA to 200mA
I OUT = 50mA; V OUT > 2.8V
I OUT = 150mA; V OUT > 2.8V
I OUT = 200mA; V OUT > 2.8V
I OUT = 0mA; EN2 = GND
f = up to 1kHz; C BYP = 0.1μF
f = 1kHz – 20kHz; C BYP = 0.1μF
–1
– 2
0.02
0.2
20
55
70
190
70
45
+1
+2
0.3
0.5
100
300
%
%
%/V
%
mV
mV
mV
μA
dB
dB
Current Limit
Output Voltage Noise
V OUT = 0V
C BYP =0.1μF, 10Hz to 100kHz
225
300
32
700
mA
μV RMS
LDO2 [V EN = 0V]
Output Voltage Accuracy
Line Regulation
Load Regulation (6)
Dropout Voltage (7)
Ground Pin Current (8)
Ripple Rejection
Variation from nominal V OUT
–40°C to +125°C
V IN = V OUT +1V to 5.5V
I OUT = 100μA to 30mA
I OUT = 10mA; V OUT > 2.8V
I OUT = 30mA; V OUT > 2.8V
I OUT = 0mA; EN1 = GND
f = up to 1kHz; C BYP = 0.1μF
f = 1kHz – 20kHz; C BYP = 0.1μF
–1
– 2
0.02
0.2
10
30
190
65
40
+1
+2
0.3
0.5
60
300
%
%
%/V
%
mV
mV
μA
dB
dB
Current Limit
Output Voltage Noise
V OUT = 0V
C BYP = 0.1μF, 10Hz to 100kHz
40
60
32
150
mA
μV RMS
July 2009
5
M9999-071709-A
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