MIC5367/8 Evaluation Board

MIC5367/8 Evaluation Board
High-Performance 200mA Peak LDO
In 1.6mm x 1.6mm Thin MLF®
General Description
The MIC5367/8 is an advanced general purpose linear
regulator. The MIC5367/8 is capable of sourcing 200mA
peak output current (150mA continuous) with high PSRR
and low output noise. When the MIC5368 is disabled an
internal resistive load is automatically applied to the output
to discharge the output capacitor. Both the MIC5367 and
MIC5368 are available in a lead free 1.6mm x 1.6mm 6 pin
Thin MLF® occupying only 2.56mm2 of PCB area.
The MIC5367/8 linear regulator is easy to use. A small
output capacitance of 1µF for the output is required.
An input capacitor may be required when the power supply
is more than 4-inches away from the device. The
evaluation board includes an input capacitor of 10µF to
compensate for long inductive test leads.
Getting Started
1. Connect an external supply to VIN. Apply the
desired input voltage to the VIN (J1) and ground
(J2) terminal of the evaluation board, paying
careful attention to polarity and supply voltage
(2.5V ≤ VIN ≤ 5.5V). An ammeter may be placed
between the input supply and the VIN terminal to
the evaluation board. Ensure that the supply
voltage is monitored at the VIN terminal. Ammeter
and/or power lead resistance can reduce the
voltage supplied to the input.
2. Enable/Disable the MIC5367/8. The evaluation
board is set up for “Default Disable” with a 100K
pull down resistor on the enable pin-(EN)to-GND.
To enable the output, simply jumper the EN (J3) to
the VIN (J1) terminal. The enable pin must be
either pulled high or low for proper operation.
Removing the pull down resistor and leaving the
pin floating will cause the regulator to operate in
an indeterminate state.
Requirements
The MIC5367/8 evaluation board requires an input power
source that is able to deliver at least 250mA at a voltage
within the range of 2.5V to 5.5V. The output load can be
either active or passive.
Precautions
The evaluation board does not have reverse
protection. Applying a negative voltage to the VIN
may damage the device.
The MIC5367/8 evaluation board is tailored for
range input supply voltage. It should not exceed
the input.
3. Connect the load to the VOUT terminal (J4) and
ground terminal (J5). The load can be either a
passive (resistor) or active (electronic load). Be
sure to monitor the output voltage at the VOUT (J4)
terminal.
polarity
terminal
a Li-Ion
5.5V on
Ordering Information
Part Number
Description
MIC5367-3.3YMT EV
200mA Peak LDO, VOUT = 3.3V,
Evaluation Board
MIC5368-3.3YMT EV
200mA Peak LDO with Auto
Discharge, VOUT = 3.3V, Evaluation
Board
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2010
M9999-091710-A
Micrel, Inc.
MIC5367/8 Evaluation Board
Evaluation Board Schematics
Bill of Materials
Item
C1
Part Number
C1608X5R0J106Z
Manufacturer
TDK
(1)
(2)
Description
Capacitor, 10µF Ceramic Capacitor, 6.3V, X5R, Size 0603
Qty.
1
C2
GRM155R61A105KE15D
Murata
Capacitor, 1µF Ceramic Capacitor, 10V, X5R, Size 0402
1
R1
CRCW0603100KFKEA
Vishay(3)
Resistor, 100kΩ, 1%, 1/16W, Size 0603
1
U1
MIC5367/8-xxYMT
High-Performance Single 200mA Peak LDO
1
Micrel, Inc.(4)
Notes:
1. TDK: www.tdk.com.
2. Murata: www.murata.com.
3. Vishay: www.vishay.com.
4. Micrel, Inc.: www.micrel.com.
September 2010
2
M9999-091710-A
Micrel, Inc.
MIC5367/8 Evaluation Board
PCB Layout Recommendations (1.6mm x 1.6mm Thin MLF®)
Top Layer
Bottom Layer
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2010 Micrel, Incorporated.
September 2010
3
M9999-091710-A