SLUAAO5B January   2023  – August 2024 TPS561243 , TPS561246 , TPS562202 , TPS562203 , TPS562206 , TPS562207 , TPS562242 , TPS562243 , TPS562246 , TPS563202 , TPS563203 , TPS563206 , TPS563207 , TPS563252 , TPS563257 , TPS564242 , TPS564247 , TPS564252 , TPS564255 , TPS564257 , TPS565242 , TPS565247 , TPS566242 , TPS566247

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Comparison of Pinout
  6. 3Schematic Diagram
    1. 3.1 How to Co-layout Among Three Types of SOT-563
    2. 3.2 How to Co-Layout Between TPS56x252/7 and TPS56x242/7
    3. 3.3 How to Co-layout Between TPS56x252/7 and TPS56x203/6
    4. 3.4 How to Co-Layout Between TPS56x242/7 and TPS56x203/6
  7. 4Experimental Results
  8. 5Summary
  9. 6References
  10. 7Revision History

3.1 How to Co-layout Among Three Types of SOT-563

Since pin 4 definitions are different for TPS56x252/7, TPS56x242/7, and TPS56x203/6, the compatible schematic is designed to achieve co-lay. The co-lay schematic is shown in Figure 3-1. There are several differences for the BOM, also note that TPS56x203/6 allows EN pin to connect to Vin by only one pullup resistor. The solder information for different parts is shown in Table 3-4. The comparison of EN pin configuration is shown in Table 3-2.

Co-layout Schematic Among Three Types of SOT-563 Figure 3-1 Co-layout Schematic Among Three Types of SOT-563
Table 3-1 Solder Information for Different Part
Part NumberDescription
TPS56x252/7
  1. If PG function is not needed, PG can be floating or connected with GND. PG tied to GND can get better thermal performance.
  2. C6 needs to be floating. R5 can be soldered or floating.
  3. EN pin max voltage is 6V, need two voltage divider resistors.
TPS56x242/7
  1. R5 needs to be soldered to connect AGND to GND.
  2. C6 needs to be floating.
  3. EN pin max voltage is 6V, need two voltage divider resistors.
TPS56x203/6
  1. C6 needs to be tied to SW.
  2. R5 needs to be floating.
  3. EN pin max voltage is 6V, allow two voltage resistors or one 100k pullup resistor.
Table 3-2 Comparison of EN Pin Configuration
Part Number TPS56325x/TPS56425x TPS562242 TPS56x203/6 TPS56x242/7
EN Default Status Low High Low Low
EN ABS Voltage 6V 6V 6V 6V
If Have A Zener Diode in Internal EN Pin No No Yes No
Support only 100k top resistor directly to Vin No No Yes No