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MIC2940A-3.3WT Datasheet(PDF) 3 Page - Micrel Semiconductor

Part # MIC2940A-3.3WT
Description  1.2A Low-Dropout Voltage Regulator
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2940A-3.3WT Datasheet(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2940A/2941A
July 2007
3
M9999-071307
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 (
θJC) ........................................................2°C/W
TO-263 (
θJC) ........................................................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 TJ = 25°C and limits in boldface apply over the full operating temperature range.
Unless otherwise specified, 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
5 mA ≤ IL ≤ 1A
–1
–2
–2.5
1
2
2.5
%
%
%
∆VO
∆T
Output Voltage Temperature
Coefficient
(Note 2)
20
100
ppm/°C
Line Regulation
IO = 10mA, (VOUT + 1V) ≤ VIN ≤ 26V
0.06
0.50
%
∆VO
VO
Load Regulation
IL = 5mA to 1.25A
IL = 5mA to 1A (Note 3)
0.04
0.16
0.20
%
%
VIN – VO
Dropout Voltage (Note 4)
IL = 5mA
IL = 250mA
IL = 1000mA
IL = 1250mA
60
200
350
400
150
180
250
320
450
600
600
mV
mV
mV
mV
mV
mV
mV
IGND
Ground Pin Current (Note 5)
IL = 5mA
IL = 250mA
IL = 1000mA
IL = 1250mA
240
3
22
35
500
4.5
6
35
45
70
µA
mA
mA
mA
mA
mA
IGNDDO
Ground Pin Current at Dropout
(Note 5)
VIN = 0.5V less than designed VOUT (VOUT 3.3)
IL = 5mA
330
600
µA
ILIMIT
Current Limit
VOUT = 0V (Note 6)
1.6
3.5
A
∆VO
∆PD
Thermal Regulation
(Note 7)
0.05
0.2
%/W
en
Output Noise Voltage
(10Hz to 100kHz)
IL = 100mA
CL = 10µF
CL = 33µF
400
260
µVRMS
µVRMS


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