contact-fact Micrel Semiconductor, contact-fact Datasheet - Page 2

• Manufacturer Part Number: contact-fact
• Description: Mic2950/mic2951 150ma Low-dropout Voltage Regulator
• Manufacturer: Micrel Semiconductor

The MIC2950 is available as either an -05 or -06 version. The
-05 and -06 versions are guaranteed for junction temperatures
from –40°C to +125°C; the -05 version has a tighter output
and reference voltage specification range over temperature.
The MIC2951 is available as an -02 or -03 version.
Ordering Information
Pin Configuration
Pin Description
MIC2950/2951
MIC2950/2951
MIC2950
Pin #
3
2
1
MIC2951
Pin #
1
2
3
4
5
6
7
8
Standard
MIC2950-05BZ
MIC2950-06BZ
MIC2951-02BM
MIC2951-03BM
MIC2951-02BN
MIC2951-03BN
MIC2951-03BMM
MIC2951-3.3BM
OUT
**PB-Free RoHS compliant with “hot-melting solder” exemption
*Junction temperature
(Bottom View)
MIC2950-xx
TO-92 (Z)
3
GND
2 1
Pin Name
Part Number
SHDN
GND
OUT
SNS
ERR
TAP
FB
IN
IN
Pb-Free**
MIC2950-05YZ
MIC2950-06YZ
MIC2951-02YM
MIC2951-03YM
Contact Factory
MIC2951-03YN
MIC2951-03YMM
MIC2951-3.3YM
Pin Function
Regulated Output
Sense (Input): Output-voltage sensing end of internal voltage divider for
fixed 5V operation. Not used in adjustable configuration.
Shutdown/Enable (Input): TTL compatible input. High = shutdown,
Ground
Error Flag (Output): Active low, open-collector output (low = error,
floating = normal).
3.3V/4.85/5V Tap: Output of internal voltage divider when the regulator is
configured for fixed operation. Not used in adjustable configuration.
Feedback (Input): 1.235V feedback from internal voltage divider’s TAP (for
fixed operation) or external resistor network (adjustable configuration).
Unregulated Supply Input
low or open = enable.
Voltage
2
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
3.3V
The MIC2950 and MIC2951 have a tight initial tolerance
(0.5% typical), a very low output voltage temperature coef-
ficient which allows use as a low-power voltage reference,
and extremely good load and line regulation (0.04% typical).
This greatly reduces the error in the overall circuit, and is the
result of careful design techniques and process control.
SHDN
GND
OUT
S N S
Accuracy
0.5%
1.0%
0.5%
1.0%
0.5%
1.0%
1.0%
1.0%
DIP (N), SOIC (M), MM8™ (MM)
1
2
3
4
MIC2951-xx
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
(Top View)
Temp Range*
8
7
6
5
8-pin Plastic DIP
8-pin Plastic DIP
8-lead MSOP
8-pin SOIC
8-pin SOIC
8-pin SOIC
IN
F B
T AP
E R R
Package
TO-92
TO-92
Micrel, Inc.
July 2005