SLUSFL6A June   2024  – November 2024 TPSM82866C

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power Save Mode
      2. 7.3.2 Forced PWM Mode
      3. 7.3.3 Optimized Transient Performance from PWM to PSM Operation
      4. 7.3.4 Low Dropout Operation (100% Duty Cycle)
      5. 7.3.5 Enable and Soft-Start Ramp
      6. 7.3.6 Switch Current Limit and HICCUP Short-Circuit Protection
      7. 7.3.7 Undervoltage Lockout
      8. 7.3.8 Thermal Warning and Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable and Disable (EN)
      2. 7.4.2 Output Discharge
      3. 7.4.3 Start-Up Output Voltage and I2C Target Address Selection (VSET)
      4. 7.4.4 Select Output Voltage Registers (VID)
    5. 7.5 Programming
      1. 7.5.1 Serial Interface Description
      2. 7.5.2 Standard-Mode, Fast-Mode, and Fast-Mode Plus Protocol
      3. 7.5.3 HS-Mode Protocol
      4. 7.5.4 I2C Update Sequence
      5. 7.5.5 I2C Register Reset
  9. 8 Register Map
    1. 8.1 Target Address Byte
    2. 8.2 Register Address Byte
    3. 8.3 VOUT Register 1
    4. 8.4 VOUT Register 2
    5. 8.5 CONTROL Register
    6. 8.6 STATUS Register
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input and Output Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
        1. 9.4.2.1 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

5 Pin Configuration and Functions

TPSM82866C TPSM82864x, TPSM82866x - RCF (15 Pin) QFN-FCMODFigure 5-1 TPSM82864x, TPSM82866x - RCF (15 Pin) QFN-FCMOD
Table 5-1 Pin Functions
PINTYPE(1)DESCRIPTION
NAME

RCF

AGND

11

PAnalog ground pin. Must be connected to a common GND plane.
EN

2

IDevice enable pin. To enable the device, this pin must be pulled high. Pulling this pin low disables the device. Do not leave floating.

SDA

3

I/O

I2C serial data pin. Do not leave floating. Connect a pullup resistor to a logic high level. If the I2C interface is not used, connect the pin to GND.

SCL

4

I

I2C serial clock pin. Do not leave this pin floating. Connect a pullup resistor to a logic high level. If the I2C interface is not used, connect the pin to GND.

VSET/VID

10

IConnecting a resistor to GND selects one of the Start-up output voltages and I2C device address. After start-up, the pin can be used to switch between the VOUT registers for the output voltage selection. (Low = VOUT Register 1; High = VOUT Register 2). See Section 7.4.3 for details.
PGND

8, 9, 12, 13

PPower ground pin. Must be connected to common GND plane.
SW

15

OSwitch pin of the power stage. This pin can be left floating.
VIN

1, 14

PPower supply input voltage pin
VOS

7

IOutput voltage sense pin. This pin must be directly connected to the output capacitor.
VOUT

5, 6

POutput voltage pin
(1) I = Input, O = Output, P = Power