MIC5281YMME EV Micrel, MIC5281YMME EV Datasheet - Page 2

• Manufacturer Part Number: MIC5281YMME EV
• Description: Power Management IC Development Tools 120V/25mA Low Iq, High PSRR LDO - Evaluation Board
• Manufacturer: Micrel
• Type: LDO Controllers & Regulatorsr

Specifications of MIC5281YMME EV

• Product: Evaluation Boards
• Tool Is For Evaluation Of: MIC5281
• Input Voltage: 6 V to 120 V
• Output Voltage: Adjustable, 3.3 V, 5 V
• Description/function: Evaluation Board
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Output Current: 25 mA
• For Use With: MIC5281

Applications Information
Output Voltage
The output voltage on the MIC5281YMME evaluation
board is adjustable. The output is set by connecting one
of the feedback resistors into the circuit via a jumper
short. The output voltage can be programmed to 1.8V,
2.5V, 3.3V, or 5V. The output voltage for the MIC5281
evaluation board is set at the factory for a 5V output. In
general, the output voltage can be calculated using the
following equation:
where V
in the EVB circuit schematic, and R
resistor that will be connected from FB to ground
amongst R3, R4, R5, and R6 in the circuit schematic.
Micrel, Inc.
October 2012
REF
V
OUT
= 1.27V, R1 is the combination of R1 and R2
=
V
REF
×
⎛
⎜
⎜
⎝
1
+
R
R
FB
1
⎞
⎟
⎟
⎠
FB
is the feedback
2
The output voltage can easily be modified by removing
R1 and R
the desired output voltage. Once R1 is selected, R
be calculated using:
For V
REF
R
R
= 1.27V:
FB
FB
FB
and replacing them with the values that yield
=
=
V
V
R
OUT
R
OUT
1
1
×
×
V
−
MIC5281YMME Evaluation Board
. 1
−
REF
V
1.27V
27
REF
V
M9999-101112-A
FB
can