MIC2940A Datasheet, PDF (3/8 Pages) Micrel Semiconductor – 1.25A Low-Dropout Voltage Regulator Preliminary Information

MIC2940A/2941A
Electrical Characteristics
Micrel
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
∆V_O
∆T
∆V_O
V_O
∆V_O
V_O
V_IN – V_O
Parameter
Output Voltage
Accuracy
Output Voltage
Temperature Coef.
Line Regulation
Conditions
5 mA ≤ I_L ≤ 1A
(Note 2)
V = V + 1V to 26V
IN
OUT
Load Regulation
Dropout Voltage
(Note 4)
I_L = 5mA to 1.25A
I_L = 5mA to 1A
(Note 3)
I_L = 5mA
I_L = 250mA
I = 1000mA
L
I_L = 1250mA
Min Typical
–1
–2
–2.5
20
0.03
0.04
60
200
350
400
Max Units
1
%
2
2.5
100 ppm/°C
0.10
%
0.40
0.16
%
0.20
%
150
mV
180
250
320
450
600
600
I_GND
Ground Pin Current I_L = 5mA
(Note 5)
I = 250mA
L
I_L = 1000mA
I_L = 1250mA
240
350
µA
500
3
4.5
mA
6
22
35
45
35
70
I_GNDDO
I
LIMIT
∆V_O
∆P_D
e_n
Ground Pin
Current at Dropout
(Note 5)
Current Limit
Thermal Regulation
V_IN = 0.5V less than designed V_OUT
(V_OUT ≥ 3.3V)
I_L = 5mA
V = 0V
OUT
(Note 6)
(Note 7)
Output Noise
Voltage
(10Hz to 100kHz)
I_L = 100mA
C_L = 10µF
C_L = 33µF
330
600
µA
1.6
2.4
A
3
0.05
0.2 %/W
400
µV RMS
260
June 1999
3
MIC2940A/2941A