SLVS873D June   2015  – April 2016 TPS61098 , TPS610981 , TPS610982 , TPS610985 , TPS610986 , TPS610987

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Boost Controller Operation
      2. 8.3.2 Pass-Through Operation
      3. 8.3.3 LDO / Load Switch Operation
      4. 8.3.4 Start Up and Power Down
      5. 8.3.5 Over Load Protection
      6. 8.3.6 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation Modes by MODE Pin
        1. 8.4.1.1 Active Mode
        2. 8.4.1.2 Low Power Mode
      2. 8.4.2 Burst Mode Operation under Light Load Condition
      3. 8.4.3 Pass-Through Mode Operation
  9. Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 VMAIN to Power MCU and VSUB to Power Subsystem
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Device Choice
          2. 9.2.1.2.2 Maximum Output Current
          3. 9.2.1.2.3 Inductor Selection
          4. 9.2.1.2.4 Capacitor Selection
          5. 9.2.1.2.5 Control Sequence
        3. 9.2.1.3 Application Curves
      2. 9.2.2 VMAIN to Power the System in Low Power Mode
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 VSUB to Power the System in Active Mode
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
    3. 12.3 Related Links
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 300 nA Ultra-Low IQ in Low Power mode
  • Startup into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 4.5 V
  • Selectable Output Voltages Up to 4.3 V
  • Minimum 350 mA Switch Peak Current Limit
  • Integrated LDO/Load Switch
  • Two Modes Controlled by MODE Pin
    • Active Mode: Dual Outputs at Set Values
    • Low Power Mode: LDO/Load Switch Off; Boost Keeps On
  • Automatic Pass-Through
  • Up to 88% Efficiency at 10 µA Load from 2 V to 3.3 V Conversion (Low Power Mode)
  • Up to 93% Efficiency at 5 mA ~ 100 mA Load from 2 V to 3.3 V Conversion
  • 1.5 mm x 1.5 mm WSON Package

2 Applications

  • Smart Remote Control
  • BLE Tag
  • Wearable Applications
  • Low Power Wireless Applications
  • Portable Consumer or Medical Products
  • Single Coin Cell, Single or Two-Cell Alkaline Powered Applications

3 Description

The TPS61098x is an ultra low power solution for products powered by either a one-cell or two-cell alkaline, NiCd or NiMH, one-cell coin cell or one-cell Li-Ion or Li-polymer battery. It integrates either a Low-dropout Linear Regulator (LDO) or a load switch with a boost converter and provides two output rails. The boost output V(MAIN) is designed as an always-on supply for a main system, and the LDO or load switch output V(SUB) is to power peripheral devices.

The TPS61098x has two modes controlled by MODE pin: Active mode and Low Power mode. In Active mode, both outputs are enabled with enhanced response performance. In Low Power mode, the LDO or load switch is disabled to disconnect peripherals. The TPS61098x consumes only 300 nA quiescent current and can achieve up to 88% efficiency at
10 µA load in Low Power mode.

The TPS61098x supports automatic pass-through function. When input voltage is higher than a pass-through threshold, the boost converter stops switching and passes the input voltage to VMAIN rail; when input voltage is lower than the threshold, the boost works in boost mode and regulates output at the target value. The TPS61098x provides different versions for different output set values.

The TPS61098x can provide up to 50 mA total output current at 0.7 V input to 3.3 V output conversion. The boost is based on a hysteretic controller topology using synchronous rectifier to obtain maximum efficiency at minimal quiescent current.

The TPS61098x is available in 1.5 mm x 1.5 mm WSON package to enable small circuit layout size.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61098x 6 pin WSON 1.50 mm x 1.50 mm
  1. For all available packages, see the orderable addendum at the end of this document.

Simplified Schematic

TPS61098 TPS610981 TPS610982 TPS610985 TPS610986 TPS610987 app_cir_RC.gif

4 Revision History

Changes from C Revision (December 2015) to D Revision

  • Added device TPS610987 Go
  • Added TPS610987DSE in the Device Comparison Table.Go
  • Added TPS610987 device to Electrical Characteristics table. Go
  • Changed devices listed in the Conditions notes From:: TPS61098, '1, '5, '6 To: TPS61098, '1, '5, '6, '7 on graphs affected by adding TPS610987 device. Go
  • Changed devices listed in the Conditions note From:: TPS61098 To: TPS61098, '7 in Figure 18, and Figure 19Go

Changes from B Revision (July 2015) to C Revision

Changes from A Revision (July 2015) to B Revision

Changes from * Revision (June 2015) to A Revision

  • Changed text in the Description From: "can achieve 80% efficiency" To: " can achieve up to 88% efficiency"Go
  • Changed "LDO / LS CRTL" with LDO / LS CTRL" and 4.7 µF To 4.7 µH in the Simplified SchematicGo
  • Changed VIN = 1.2 V To VIN = 1.5 V and VIN = 2 V to VIN = 2.5 V in Figure 19 Go
  • Changed "Boost Efficiency" To: "Boost Output Voltage" in Figure 28 To Figure 31Go
  • Changed text "below the programmed threshold," To: "below the programmed threshold with a hysteresis," in Thermal ShutdownGo
  • Changed text "unstable operation at IC temperatures at the overtemperature threshold." To: "unstable operation at the overtemperature threshold." in Thermal ShutdownGo
  • Changed text "sense or transfer signals" To: sense or transmit signals" in VMAIN to Power MCU and VSUB to Power Subsystem Go
  • Changed 4.7 µF To 4.7 µH in Figure 57Go
  • Changed text "TPS610981 enters into sleep mode" To: "TPS610981 enters into Low Power mode" in Control Sequence Go
  • Changed 4.7 µF To 4.7 µH in Figure 81Go
  • Changed text "a boost converter and an LDO are needed: To: "a boost converter with an LDO is needed" in Figure 85Go
  • Changed 4.7 µF To 4.7 µH in Figure 85Go