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MIC5205
Micrel
June 2000
3
MIC5205
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 100
μ
A; C
L
= 1.0
μ
F; V
EN
≥
2.0V; T
J
= 25
°
C,
bold
values indicate
–
40
°
C
≤
T
J
≤
+125
°
C; unless noted.
Symbol
Parameter
Conditions
Min
Typical
Max
Units
V
O
Output Voltage Accuracy
variation from specified V
OUT
–
1
–
2
1
2
%
%
V
O
/
T
Output Voltage
Temperature Coefficient
Note 4
40
ppm/
°
C
V
O
/V
O
Line Regulation
V
IN
= V
OUT
+ 1V to 16V
0.004
0.012
0.05
% / V
% / V
V
O
/V
O
Load Regulation
I
L
= 0.1mA to 150mA,
Note 5
0.02
0.2
0.5
%
%
V
IN
–
V
O
Dropout Voltage,
Note 6
I
L
= 100
μ
A
10
50
70
150
230
250
300
275
350
mV
mV
mV
mV
mV
mV
mV
mV
I
L
= 50mA
110
I
L
= 100mA
140
I
L
= 150mA
165
I
GND
Quiescent Current
V
EN
≤
0.4V (shutdown)
V
EN
≤
0.18V (shutdown)
V
EN
≥
2.0V, I
L
= 100
μ
A
0.01
1
5
μ
A
μ
A
I
GND
Ground Pin Current,
Note 7
80
125
150
600
800
1000
1500
1900
2500
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
I
L
= 50mA
350
I
L
= 100mA
600
I
L
= 150mA
1300
PSRR
Ripple Rejection
frequency = 100Hz, I
L
= 100
μ
A
V
OUT
= 0V
Note 8
75
dB
I
LIMIT
V
O
/
P
D
e
no
Current Limit
320
500
mA
Thermal Regulation
0.05
%/W
Output Noise
I
L
= 50mA, C
L
= 2.2
μ
F,
470pF from BYP to GND
260
nV/ Hz
ENABLE Input
V
IL
Enable Input Logic-Low Voltage
regulator shutdown
0.4
0.18
V
V
V
IH
I
IL
Enable Input Logic-High Voltage
regulator enabled
2.0
V
Enable Input Current
V
IL
≤
0.4V
V
IL
≤
0.18V
V
IH
≥
2.0V
V
IH
≥
2.0V
0.01
–
1
–
2
20
25
μ
A
μ
A
μ
A
μ
A
I
IH
2
5
Note 1.
Note 2.
Note 3:
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
The maximum allowable power dissipation at any T
(ambient temperature) is P
= (T
–
T
)
÷ θ
. Exceeding the maximum
allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The
θ
JA
of the MIC5205-
xxBM5 (all versions) is 220
°
C/W mounted on a PC board (see
“
Thermal Considerations
”
section for further details).
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load
range from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential.
Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Thermal regulation is defined as the change in output voltage at a time
“
t
”
after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 150mA load pulse at V
IN
= 16V for t = 10ms.
Note 4:
Note 5:
Note 6:
Note 7:
Note 8: