SLVSBG1D October   2012  – May 2015 TPS61196

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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 Switching Characteristics
    7. 6.7 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 Supply Voltage
      2. 7.3.2 Boost Controller
      3. 7.3.3 Switching Frequency
      4. 7.3.4 Enable and Undervoltage Lockout
      5. 7.3.5 Power-up Sequencing and Soft Start-up
      6. 7.3.6 Unused LED String
      7. 7.3.7 Current Regulation
      8. 7.3.8 PWM Dimming
    4. 7.4 Device Functional Modes
      1. 7.4.1 Protections
        1. 7.4.1.1  Switch Current Limit Protection Using the ISNS Pin
        2. 7.4.1.2  LED Open Protection
        3. 7.4.1.3  LED Short-Cross Protection Using the FBP Pin
        4. 7.4.1.4  Schottky Diode Open Protection
        5. 7.4.1.5  Schottky Diode Short Protection
        6. 7.4.1.6  IFB Overvoltage Protection During Start-up
        7. 7.4.1.7  Output Overvoltage Protection Using the OVP Pin
        8. 7.4.1.8  Output Short-to-Ground Protection
        9. 7.4.1.9  IFB Short-to-Ground Protection
        10. 7.4.1.10 ISET Short-to-Ground Protection
        11. 7.4.1.11 Thermal Protection
      2. 7.4.2 Indication For Fault Conditions
  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 Schottky Diode
        3. 8.2.2.3 Switch MOSFET and Gate Driver Resistor
        4. 8.2.2.4 Current Sense and Current Sense Filtering
        5. 8.2.2.5 Output Capacitor
        6. 8.2.2.6 Loop Consideration
      3. 8.2.3 Application Curves
  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 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 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
28-Pin HTSSOP
Top View
TPS61196 PO_lvsbg1.gif

Pin Functions

PIN TYPE DESCRIPTION
NUMBER NAME
1 UVLO I Low input voltage lockout. Use a resistor divider from VIN to this pin to set the UVLO threshold.
2 EN I Enable and disable pin. EN high = enable, EN low = disable.
3,4,5,6,7,8 PWM1 to PWM6 I PWM signal input pins. The frequency of PWM signal is in the range of 90 Hz to 22 kHz.
9 FBP O LED cross-short protection threshold program pin. Use a resistor to GND to set the threshold.
10 ISET O Connecting a resistor to the pin programs the IFB pin current level for full brightness (that is, 100% dimming).
11 IFBV O Minimum feedback voltage setting for LED strings.
12,13,14,15,16,17 IFB1 to IFB6 I Regulated current sink input pins
18 AGND G Analog ground
19 OVP I Overvoltage protection detection input. Connect a resistor divider from output to this pin to program the OVP threshold.
20 COMP O Loop compensation for the boost converter. Connect a RC network to make loop stable.
21 REF O Internal reference voltage for the boost converter. Use a capacitor at this pin to adjust the soft start time. When two chips operate in parallel, connect the master's REF pin to the slave's COMP pin.
22 PGND G External MOSFET current sense ground input.
23 ISNS I External MOSFET current sense positive input.
24 GDRV o External switch MOSFET gate driver output.
25 VDD O Internal regulator output for device internal power supply. Connect a 1-µF ceramic capacitor to this pin.
26 FSW O Switching frequency setting pin. Use a resistor to set the frequency between 100 kHz to 800 kHz. An external input voltage above 3.5 V or below 0.5 V disables the internal clock and makes the device as slave device.
27 FAULT O Fault indicator. Open-drain output. Output high impedance when fault conditions happens.
28 VIN I Power supply input pin