MIC5255-3.1BM5 TR Micrel Inc, MIC5255-3.1BM5 TR Datasheet - Page 11
![IC REG LDO 150MA 3.1V SOT23-5](/photos/6/57/65771/576-sot-23-5_sml.jpg)
MIC5255-3.1BM5 TR
Manufacturer Part Number
MIC5255-3.1BM5 TR
Description
IC REG LDO 150MA 3.1V SOT23-5
Manufacturer
Micrel Inc
Datasheet
1.MIC5255-3.3YM5_TR.pdf
(13 pages)
Specifications of MIC5255-3.1BM5 TR
Regulator Topology
Positive Fixed
Voltage - Output
3.1V
Voltage - Input
Up to 6V
Voltage - Dropout (typical)
0.135V @ 150mA
Number Of Regulators
1
Current - Output
150mA
Current - Limit (min)
160mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
MIC5255-3.1BM5TR
MIC5255-3.1BM5TR
MIC5255-3.1BM5TR
The junction-to-ambient thermal resistance for the
minimum footprint is 235°C/W, from Table 1. The
maximum power dissipation must not be exceeded for
proper operation. Using the output voltage of 3.0V and
an output current of 150mA, the maximum input voltage
can be determined. Because this device is CMOS and
the ground current is typically 100µA over the load
range, the power dissipation contributed by the ground
current is < 1% and can be ignored for this calculation:
Micrel, Inc.
November 2006
315mW = (V
315mW = V
810mW = V
V
IN(max)
= 5.4V
IN
IN
IN
× 150mA – 450mW
× 150mA
– 3.0V) 150mA
11
Therefore, a 3.0V application at 150mA of output current
can accept a maximum input voltage of 5.4V in a SOT-
23-5 package. For a full discussion of heat sinking and
thermal effects on voltage regulators, refer to the “ Reg-
ulator Thermals ” section of Micrel’s Designing with Low-
Dropout Voltage Regulators handbook.
M9999-110906
MIC5255