MIC5201
Micrel, Inc.
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 100µA; C
L
= 3.3µF; V
EN
≥
2.0V; T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+85°C; unless noted
Symbol
V
O
∆V
O
/∆T
∆V
O
/V
O
∆V
O
/V
O
∆V
O
/V
O
V
IN
– V
O
Parameter
Output Voltage Accuracy
Output Voltage Temperature Coef.
Line Regulation, Fixed
Line Regulation, Adjustable
Load Regulation
Dropout Voltage,
Note 4
Condition
Variation from specified V
OUT
Note 2
V
IN
= V
OUT
+ 1V to 26V
V
IN
= V
OUT
+ 1V to 16V
I
L
= 0.1mA to 200mA,
Note 3
I
L
= 100µA
I
L
= 20mA
I
L
= 50mA
I
L
= 100mA
I
L
= 200mA
V
ENABLE
≤
0.7V (shutdown)
I
L
= 100µA
I
L
= 20mA
I
L
= 50mA
I
L
= 100mA
I
L
= 200mA
V
IN
= 0.5V less than specified V
OUT
,
I
L
= 100µA,
Note 5
V
OUT
= 0V
Note 6
Min
–1
–2
40
0.004
0.004
0.04
17
130
180
225
270
0.01
130
270
500
1000
3000
75
270
280
0.05
100
330
500
400
2000
Typ
Max
1
2
150
0.20
0.40
0.20
0.40
0.16
0.30
Units
%
%
ppm/°C
%
%
%
%
%
%
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
dB
µA
mA
%/W
µV
400
I
GND
I
GND
Quiescent Current
Ground Pin Current
PSRR
I
GNDDO
I
LIMIT
∆V
O
/∆P
D
e
n
Enable Input
V
IL
V
IH
I
IL
I
IH
V
REF
I
IL
Note 1:
Ripple Rejection
Ground Pin Current at Dropout
Current Limit
Thermal Regulation
Output Noise
Input Voltage Level
Input Voltage Level
Enable Input Current
Enable Input Current
logic low (off)
logic high (on)
V
IL
≤
0.7V
V
IH
≤
2.0V
1.223
1.217
2.0
0.01
15
0.7
V
V
1
50
µA
µA
Reference (MIC5201 Adjustable Version Only)
Reference Voltage
Reference Voltage Temp. Coef.
1.242
20
1.255
1.267
V
V
ppm/°C
General Note:
Devices are ESD sensitive. Handling precautions 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
J(max)
, the junction-to-ambient thermal resistance,
θ
JA
, and the ambient temperature, T
A
. The maximum allowable power
dissipation at any ambient temperature is calculated using: P
(max)
= (T
T
J(max)
–
A
)
÷
θ
JA
. Exceeding the maximum allowable power dissipation
will result in excessive die temperature, and the regulator will go into thermal shutdown. The
θ
JC
of the MIC5201-x.xBS is 15°C/W and
θ
JA
for
the MIC5201BM is 160°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 200mA. 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 200mA load pulse at V
IN
= 26V for fixed and V
IN
= 16V for adjustable at t = 10ms.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
June 2005
3
MIC5201
MICREL [ MICREL SEMICONDUCTOR ]
