MIC94161YCS-EV

3A High-Side Load Switch with Reverse Blocking MIC94161/2/3/4/5 Evaluation Board General Description The MIC94161/2/3/4/5 is a family of high-side load switches designed to operate from 1.7V to 5.5V input voltage. The load switch pass element is an internal 14.5mΩ RDSON N-Channel MOSFET which enables the device to support up to 3A of continuous current. Additionally, the load switch supports 1.5V logic level control and shutdown features in a tiny 1.5mm × 1mm 6-ball WLCSP package. The MIC9416x provides reverse current protection when the device is disabled. The device will not allow the flow of current from the output to the input when the device is turned OFF. Additionally, the MIC94161 features overvoltage protection to protect the load when the input voltage is above 4.55V, as well as a precise enable threshold which keeps the MIC94161 in the default OFF state until the EN pin rises above 1.15V. 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. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Requirements The MIC94161/2/3/4/5 evaluation board requires an input power source that is able to deliver at least 3A at a voltage within the range of 1.7V to 5.5V. The output load can be either active or passive. Precautions The evaluation board does not have reverse polarity protection. Applying a negative voltage to the VIN terminal may damage the device. The evaluation board is tailored for a Li-Ion range input supply voltage. It should not exceed 5.5V on the input. Getting Started 1. Connect an external supply to VIN. Apply the desired input voltage to the VIN (J3) and ground terminal (J6) of the evaluation board, paying careful attention to polarity and supply voltage (1.7V ≤ VIN ≤ 5.5V). An ammeter may be placed between the input supply and the VIN terminal to the evaluation board to accurately monitor the input current. The ammeter and power lead resistance can reduce the voltage supplied to the input so monitor the supply voltage at the VIN terminal. 2. Enable/Disable the MIC94161/2/3/4/5. The MIC9416x family of high side switches, have an internal 2MΩ pull down resistor to GND on the enable pin to disable the device when an enable signal is not present. To enable an output simply jumper the EN terminal (J5) to VIN (J3) or apply an Active-high CMOS compatible logic to (J3). 3. Connect the load to the VOUT terminal (J4) and ground terminal (J7). The load can be either a passive (resistor) or active (electronic load). Be sure to monitor the output voltage at the VOUT (J4) terminals. Ordering Information Part Number Description MIC94161YCS EVB Evaluation board with 3A High-Side switch, 2.7ms turn on, and OVP. MIC94162YCS EVB Evaluation board with 3A High-Side switch, 60µs turn on, and auto discharge. MIC94163YCS EVB Evaluation board with 3A High-Side switch and 60µs turn on. MIC94164YCS EVB Evaluation board with 3A High-Side switch, 2.7ms turn on, and auto discharge. MIC94165YCS EVB Evaluation board with 3A High-Side switch and 2.7ms turn on. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com October 4, 2013 Revision 1.0 Micrel, Inc. MIC94161/2/3/4/5 Evaluation Board Evaluation Board Schematic Bill of Materials Item C1 R3 U1 Part Number C1608X5R0J106M ERJ-8BWFR033V MIC9416xYCS Manufacturer (1) TDK Panasonic (3) Micrel (2) Description Qty Capacitor, 10µF Ceramic, 6.3V, X5R, Size 0603 1 Resistor, 0.033Ω, 1W, Size 1206 1 3A High-Side Load Switch with Reverse Blocking 1 Notes: 1. TDK: www.tdk.com 2. Panasonic: www.panasonic.com 3. Micrel: www.micrel.com October 4, 2013 2 Revision 1.0 Micrel, Inc. MIC94161/2/3/4/5 Evaluation Board PCB Layout Recommendations Top Layer Bottom Layer October 4, 2013 3 Revision 1.0 Micrel, Inc. MIC94161/2/3/4/5 Evaluation Board 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. © 2013 Micrel, Incorporated. October 4, 2013 4 Revision 1.0