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3-170
1997
MIC5208
Absolute Maximum Ratings
Supply Input Voltage (V
IN
) ............................ –20V to +20V
Enable Input Voltage (V
EN
) ........................... –20V to +20V
Power Dissipation (P
D
) ............................Internally Limited
Storage Temperature Range ................... –60
°
C to +150
°
C
Lead Temperature (soldering, 5 sec.) ....................... 260
°
C
Micrel
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 1mA; C
L
= 1
μ
F, and V
EN
≥
2.0V; T
J
= 25
°
C,
bold
values indicate –40
°
C to +125
°
C;
for one-half of dual MIC5208; unless noted.
Symbol
Parameter
Conditions
Min
Typical
Max
Units
V
O
Output Voltage
Accuracy
variation from nominal V
OUT
–3
–4
3
4
%
%
V
O
/
T
Output Voltage
Temperature Coeffcient
Note 2
50
200
ppm/
°
C
V
O
/V
O
Line Regulation
V
IN
= V
OUT
+1V to 16V
0.008
0.3
0.5
%
%
V
O
/V
O
Load Regulation
I
L
= 0.1mA to 50mA,
Note 3
0.08
0.3
0.5
%
%
V
IN
– V
O
Dropout Voltage,
Note 4
I
L
= 100
μ
A
I
L
= 20mA
I
L
= 50mA
V
EN
≤
0.4V (shutdown)
V
EN
≥
2.0V (enabled), I
L
= 100
μ
A
I
L
= 20mA
I
L
= 50mA
V
IN
= 0.5V less than designed V
OUT
,
Note 5
V
OUT
= 0V
Note 6
20
200
250
mV
mV
mV
350
500
I
Q
I
GND
Quiescent Current
0.01
10
μ
A
Ground Pin Current
Note 5
180
225
850
μ
A
μ
A
μ
A
750
1200
I
GNDDO
I
LIMIT
V
O
/
P
D
Control Input
Ground Pin Current at Dropout
200
300
μ
A
Current Limit
180
250
mA
Thermal Regulation
0.05
%/W
Input Voltage Level
Logic Low
Logic High
V
IL
V
IH
I
IL
I
IH
shutdown
enabled
0.6
V
V
2.0
Control Input Current
V
IL
≤
0.6V
V
IH
≥
2.0V
0.01
15
1
μ
A
μ
A
50
General Note:
Note 1:
Devices are ESD protected, however, handling precautions are recommended.
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when
operating the device outside of its rated operating conditions. The maximum allowable power dissipation is a function of the maximum
junction temperature, T
, the junction-to-ambient thermal resistance,
θ
, and the ambient temperature, T
. The maximum allowable
power dissipation at any ambient temperature is calculated using: P
= (T
– T
)
/
θ
. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
θ
JA
of the 8-lead MSOP is 200
°
C/W,
mounted on a PC board.
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. 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 50mA load pulse at V
IN
= 16V for t = 10ms.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Recommended Operating Conditions
Supply Input Voltage (V
IN
) ............................... 2.5V to 16V
Enable Input Voltage (V
EN
) ................................. 0V to 16V
Junction Temperature (T
J
) ....................... –40
°
C to +125
°
C
8-lead MSOP
(θ
JA
) ...................................................
Note 1