MIC2941AWT Datasheet, PDF (3/11 Pages) Micrel Semiconductor – 1.2A Low-Dropout Voltage Regulator

Micrel, Inc.
MIC2940A/2941A
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
contact your local Micrel representative/distributor for
availability and specifications
Power Dissipation (Note 1) .......................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
Storage Temperature ................................–65°C to +150°C
Operating Junction Temperature ..............–40°C to +125°C
TO-220 (θ_JC) ........................................................2°C/W
TO-263 (θ_JC) ........................................................2°C/W
Input Supply Voltage ...................................... –20V to +60V
Operating Input Supply Voltage .......................... 2V^† to 26V
Adjust Input Voltage (Notes 9 and 10) ......... –1.5V to +26V
Shutdown Input Voltage ................................ –0.3V to +30V
Error Comparator Output Voltage ................. –0.3V to +30V
† _{Across the full operating temperature, the minimum input voltage range}
for full output current is 4.3V to 26V. Output will remain in-regulation at
lower output voltages and low current loads down to an input of 2V at
25°C.
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 Parameter
Condition
Min Typ Max Units
V_O
Output Voltage Accuracy
∆V_O
Output Voltage Temperature
∆T
Coefficient
∆V_O
Line Regulation
V_O
Load Regulation
V_IN – V_O Dropout Voltage (Note 4)
I_GND
Ground Pin Current (Note 5)
5 mA ≤ I_L ≤ 1A
(Note 2)
I_O = 10mA, (V_OUT + 1V) ≤ V_IN ≤ 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
I_L = 5mA
–1
–2
–2.5
20
1
%
2
%
2.5
%
100 ppm/°C
0.06 0.50
%
0.04 0.16
%
0.20
%
60
150
mV
180
mV
200
250
mV
320
mV
350
450
mV
600
mV
400
600
mV
240
500
µA
I_GNDDO
I_LIMIT
∆V_O
∆P_D
e_n
Ground Pin Current at Dropout
(Note 5)
Current Limit
Thermal Regulation
I_L = 250mA
I_L = 1000mA
I_L = 1250mA
V_IN = 0.5V less than designed V_OUT (V_OUT 3.3)
I_L = 5mA
V_OUT = 0V (Note 6)
(Note 7)
Output Noise Voltage
(10Hz to 100kHz)
I_L = 100mA
C_L = 10µF
C_L = 33µF
3
4.5
mA
6
mA
22
35
mA
45
mA
35
70
mA
330
600
µA
1.6
3.5
0.05
0.2
A
%/W
400
µV_RMS
260
µV_RMS
July 2007
3
M9999-071307