SLVS893F December   2008  – May 2019 TPS61500

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Circuit
  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 Switching Frequency
      2. 7.3.2 Soft Start
      3. 7.3.3 Enable and Thermal Shutdown
      4. 7.3.4 Undervoltage Lockout (UVLO)
      5. 7.3.5 Overvoltage Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Dimming Method
      2. 7.4.2 Analog Dimming Method
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Analog Dimming Method
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Programming the Overvoltage Protection
          2. 8.2.1.2.2 Programming the LED Current
          3. 8.2.1.2.3 Implementing Dimming
          4. 8.2.1.2.4 Computing the Maximum Output Current
          5. 8.2.1.2.5 Selecting the Inductor
          6. 8.2.1.2.6 Selecting the Schottky Diode
          7. 8.2.1.2.7 Selecting the Compensation Capacitor and Resistor
          8. 8.2.1.2.8 Selecting the Input and Output Capacitor
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Pure PWM Dimming Method
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Receiving Notification of Documentation Updates
      3. 11.1.3 Community Resources
    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

5 Pin Configuration and Functions

PWP Package
14-Pin HTSSOP With Thermal Pad
Top View
TPS61500 po_lvs893.png

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
AGND 7 I Signal ground of the IC
COMP 8 O Output of the transconductance error amplifier. An external RC network is connected to this pin.
DIMC 6 I Analog and PWM dimming method option pin. A capacitor connected to the pin to set the time constant of reference for analog dimming. Float this pin for PWM dimming.
EN 4 I Enable pin. When the voltage of this pin falls below the enable threshold for more than 10 ms, the IC turns off. This pin is also used for PWM signal input for LED brightness dimming.
FB 9 I Feedback pin for positive voltage regulation. A resistor connects to this pin to program LED current.
FREQ 10 O Switch frequency program pin. An external resistor is connected to this pin. See Application Information for information on how to size the FREQ resistor.
OVP 11 I Overvoltage protection for LED driver. The voltage is 1.229 V. Using a resistor divider can program the threshold of OVP.
PGND 12-14 I Power ground of the IC. It is connected to the source of the PWM switch.
SS 5 O Soft start programming pin. A capacitor between the SS pin and GND pin programs soft-start timing. See Application and Implementation for information on how to size the SS capacitor
SW 1, 2 I This is the switching node of the IC. Connect SW to the switched side of the inductor.
Thermal Pad — — Solder the thermal pad to the analog ground. If possible, use thermal via to connect to top and internal ground plane layers for ideal power dissipation.
VIN 3 I The input pin to the IC. Connect VIN to a supply voltage between 2.9 V and 18 V. It is acceptable for the voltage on the pin to be different from the boost power stage input for applications requiring voltage beyond VIN range.