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MIC2940A_07 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – 1.2A Low-Dropout Voltage Regulator | |||
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Micrel, Inc.
MIC2940A/2941A
Absolute Maximum Ratings
If Military/Aerospace speciï¬ed devices are required,
contact your local Micrel representative/distributor for
availability and speciï¬cations
Power Dissipation (Note 1) .......................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
Storage Temperature ................................â65°C to +150°C
Operating Junction Temperature ..............â40°C to +125°C
TO-220 (θJC) ........................................................2°C/W
TO-263 (θJC) ........................................................2°C/W
Input Supply Voltage ...................................... â20V to +60V
Operating Input Supply Voltage .......................... 2Vâ to 26V
Adjust Input Voltage (Notes 9 and 10) ......... â1.5V to +26V
Shutdown Input Voltage ................................ â0.3V to +30V
Error Comparator Output Voltage ................. â0.3V to +30V
â 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 TJ = 25°C and limits in boldface apply over the full operating temperature range.
Unless otherwise speciï¬ed, VIN = VOUT + 1V, IL = 1000mA, CL = 10µF. The MIC2941A is programmed to output 5V and
has VSHUTDOWN 0.6V.
Symbol Parameter
Condition
Min Typ Max Units
VO
Output Voltage Accuracy
âVO
Output Voltage Temperature
âT
Coefficient
âVO
Line Regulation
VO
Load Regulation
VIN â VO Dropout Voltage (Note 4)
IGND
Ground Pin Current (Note 5)
5 mA ⤠IL ⤠1A
(Note 2)
IO = 10mA, (VOUT + 1V) ⤠VIN ⤠26V
IL = 5mA to 1.25A
IL = 5mA to 1A (Note 3)
IL = 5mA
IL = 250mA
IL = 1000mA
IL = 1250mA
IL = 5mA
â1
â2
â2.5
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
IGNDDO
ILIMIT
âVO
âPD
en
Ground Pin Current at Dropout
(Note 5)
Current Limit
Thermal Regulation
IL = 250mA
IL = 1000mA
IL = 1250mA
VIN = 0.5V less than designed VOUT (VOUT 3.3)
IL = 5mA
VOUT = 0V (Note 6)
(Note 7)
Output Noise Voltage
(10Hz to 100kHz)
IL = 100mA
CL = 10µF
CL = 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
µVRMS
260
µVRMS
July 2007
3
M9999-071307
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