MIC2940 Micrel Semiconductor, MIC2940 Datasheet - Page 3

• Manufacturer Part Number: MIC2940
• Description: 1.25A Low-Dropout Voltage Regulator Preliminary Information
• Manufacturer: Micrel Semiconductor

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