SLVS821E May   2008  – May 2019 TPS61087

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Soft-Start
      2. 7.3.2 Frequency Select Pin (FREQ)
      3. 7.3.3 Undervoltage Lockout (UVLO)
      4. 7.3.4 Thermal Shutdown
      5. 7.3.5 Overvoltage Prevention
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Inductor Selection
        2. 8.2.2.2 Rectifier Diode Selection
        3. 8.2.2.3 Setting the Output Voltage
        4. 8.2.2.4 Compensation (COMP)
        5. 8.2.2.5 Input Capacitor Selection
        6. 8.2.2.6 Output Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 General Boost Application Circuits
      2. 8.3.2 TFT LCD Application
      3. 8.3.3 White LED Applications
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Third-Party Products Disclaimer
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.6 Typical Characteristics

The typical characteristics are measured with the inductors 7447789003 3.3 µH (high frequency) or 74454068 6.8 µH (low frequency) from Wurth and the rectifier diode SL22.

Table 1. Table of Graphs

FIGURE
IOUT(max) Maximum load current vs. Input voltage at High frequency (1.2 MHz) Figure 1
IOUT(max) Maximum load current vs. Input voltage at Low frequency (650 kHz) Figure 2
η Efficiency vs. Load current, VS = 15 V, VIN = 5 V Figure 3
η Efficiency vs. Load current, VS = 9 V, VIN = 3.3 V Figure 4
Supply current vs. Supply voltage Figure 5
Oscillator frequency vs. Load current Figure 6
Oscillator frequency vs. Supply voltage Figure 7
TPS61087 icc_vcc3_lvs821.gif
Figure 1. Maximum Load Current vs Input Voltage
TPS61087 eff_io_lvs821.gif
Figure 3. Efficiency vs Load Current
TPS61087 icc_vcc_lvs821.gif
Figure 5. Supply Current vs Supply Voltage
TPS61087 f_vcc_lvs821.gif
Figure 7. Oscillator Frequency vs Supply Voltage
TPS61087 icc_vcc2_lvs821.gif
Figure 2. Maximum Load Current vs Input Voltage
TPS61087 eff2_io_lvs821.gif
Figure 4. Efficiency vs Load Current
TPS61087 f_io_lvs821.gif
Figure 6. Oscillator Frequency vs Load Current