MIC2940A/2941A
Micrel
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C and limits in
boldface
apply over the full operating temperature range.
Unless otherwise specified, V
IN
= V
OUT
+ 1V, I
L
= 1000mA, C
L
= 10µF. The MIC2941A is programmed to output 5V and has
V
SHUTDOWN
≤
0.6V.
Symbol
V
O
Parameter
Output Voltage
Accuracy
Output Voltage
Temperature Coef.
Line Regulation
Load Regulation
Conditions
Min
–1
–2
–2.5
Typical
Max
1
2
2.5
100
0.10
0.40
0.16
0.20
150
180
250
320
450
600
600
350
500
4.5
6
35
45
70
600
Units
%
∆V
O
∆T
∆V
O
V
O
∆V
O
V
O
V
IN
– V
O
5 mA
≤
I
L
≤
1A
(Note 2)
V
IN
= V
OUT
+ 1V to 26V
I
L
= 5mA to 1.25A
I
L
= 5mA to 1A
(Note 3)
I
L
= 5mA
I
L
= 250mA
I
L
= 1000mA
I
L
= 1250mA
20
0.03
0.04
ppm/°C
%
%
%
mV
Dropout Voltage
(Note 4)
60
200
350
400
240
3
22
35
330
I
GND
Ground Pin Current
(Note 5)
I
L
= 5mA
I
L
= 250mA
I
L
= 1000mA
I
L
= 1250mA
µA
mA
I
GNDDO
I
LIMIT
∆V
O
∆P
D
e
n
V
IN
= 0.5V less than designed V
OUT
(V
OUT
≥
3.3V)
I
L
= 5mA
V
OUT
= 0V
(Note 6)
Thermal Regulation (Note 7)
Output Noise
Voltage
(10Hz to 100kHz)
I
L
= 100mA
C
L
= 10µF
C
L
= 33µF
Ground Pin
Current at Dropout
(Note 5)
Current Limit
µA
1.6
0.05
400
260
2.4
3
0.2
A
%/W
µV
RMS
June 1999
3
MIC2940A/2941A
MICREL [ MICREL SEMICONDUCTOR ]
