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