SNVU755A January   2021  – June 2021 TLV841

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Related Documentation
    2. 1.2 TLV841 Applications
  3. 2Schematic, Bill of Materials, and Layout
    1. 2.1 TLV841EVM Schematic
    2. 2.2 TLV841EVM Bill of Materials
    3. 2.3 Layout and Component Placement
    4. 2.4 Layout
  4. 3EVM Connectors
    1. 3.1 EVM Test Points
    2. 3.2 EVM Jumpers
  5. 4EVM Setup and Operation
    1. 4.1 Input Power (VDD)
    2. 4.2 Monitoring Voltage on SENSE Pin (TLV841S)
    3. 4.3 Monitoring Voltage on VDD (TLV841M and TLV841C)
    4. 4.4 Manual Reset (MR) (TLV841M)
    5. 4.5 Reset Output (RESET)
    6. 4.6 Reset Time Delay Programming (Program tD via CT) (TLV841C)
  6. 5Revision History

1 Introduction

The TLV841EVM is an evaluation module (EVM) for the TLV841 voltage supervisor. Refer to TLV841 datasheet to understand the device features supported by different variants. The TLV841EVM can be used with any TLV841 device variant, TLV841M, TLV841C, and TLV841S. The TLV841EVM comes pre-populated with TLV841SADL01YBHR. If users need a different option, the existing device must be removed from the board and replaced. The EVM board is designed to support all possible options by changing jumper configuration.

The TLV841EVM also can accommodate push-pull variants (TLV841xxPLxx or TLV841xxPHxx). If a push-pull variant is placed onto the TLV841EVM, the shunt on J1 must be removed as push-pull devices do not use a pull-up resistor. Therefore, R1 on the TLV841EVM must be disconnected. Please also note if using TLV841EVM with the active-high variant (TLV841xxPHxx), the active-low RESET label on the EVM board and throughout this User Guide becomes active-high RESET. Active low RESET output with open-drain and push-pull topologies have a supply voltage range of 0.7 V to 5.5 V. For active high push-pull outputs (PH output topology), the supply voltage range is 1 V to 5.5 V. The TLV841EVM includes the TLV841S device (TLV841xxDLxx) and the EVM offers connections for all device input and output pins. Test points are provided to give the user additional access, if needed, for oscilloscope or multi-meter measurements.

Figure 1-1 TLV841EVM Board Top
Figure 1-2 TLV841EVM Board Bottom