SLVS978D March   2010  – September 2016 TPS61310 , TPS61311

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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 I2C Interface Timing Requirements
    7. 7.7 Dissipation Ratings
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Privacy Indicator
        1. 9.3.1.1 Dedicated LED Privacy Indicator
        2. 9.3.1.2 White LED Privacy Indicator
      2. 9.3.2 Safe Operation and Protection Features
        1. 9.3.2.1 LED Temperature Monitoring (Finger-Burn Protection)
        2. 9.3.2.2 LED Failure Modes (Open and Short Detection) and Overvoltage Protection
          1. 9.3.2.2.1 LED Open Circuit Detection and Overvoltage Protection
          2. 9.3.2.2.2 Short-Circuit Protection
        3. 9.3.2.3 LED Current Ramp-Up and Ramp-Down
        4. 9.3.2.4 Battery Voltage Droop Monitoring and Protection
        5. 9.3.2.5 Undervoltage Lockout
        6. 9.3.2.6 Hot Die Detection and Thermal Shutdown
        7. 9.3.2.7 Current Limit
        8. 9.3.2.8 Flash Blanking (Tx-Mask) for Instantaneous Flash Current Reduction
      3. 9.3.3 Start-Up Sequence
      4. 9.3.4 NRESET Input: Hardware Enable or Disable
      5. 9.3.5 Serial Interface Description
        1. 9.3.5.1 F/S-Mode Protocol
        2. 9.3.5.2 H/S-Mode Protocol
        3. 9.3.5.3 TPS6131x I2C Update Sequence
        4. 9.3.5.4 Slave Address Byte
        5. 9.3.5.5 Register Address Byte
      6. 9.3.6 LED Forward Voltage Calibration
    4. 9.4 Device Functional Modes
      1. 9.4.1 Video Light and Flash Strobe Operation
        1. 9.4.1.1 LED Hardware Setup
        2. 9.4.1.2 Triggering Video Light and Flash
        3. 9.4.1.3 Level-Sensitive Flash Trigger (STT = 0)
        4. 9.4.1.4 Rising-Edge Flash Trigger (STT = 1)
      2. 9.4.2 Voltage Mode
        1. 9.4.2.1 Down Mode in Voltage Mode Operation
        2. 9.4.2.2 Power Good Indication
      3. 9.4.3 Power-Save Mode Operation, Efficiency
      4. 9.4.4 Shutdown
    5. 9.5 Register Maps
      1. 9.5.1 REGISTER0 (address = 0x00)
      2. 9.5.2 REGISTER1 (address = 0x01)
      3. 9.5.3 REGISTER2 (address = 0x02)
      4. 9.5.4 REGISTER3 (address = 0x03)
      5. 9.5.5 REGISTER4 (address = 0x04)
      6. 9.5.6 REGISTER5 (address = 0x05)
      7. 9.5.7 REGISTER6 (address = 0x06)
      8. 9.5.8 REGISTER7 (address = 0x07)
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 2x 600-mA High Power White LED Solution Featuring Privacy Indicator
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Inductor Selection
          2. 10.2.1.2.2 Input Capacitor
          3. 10.2.1.2.3 Output Capacitor
          4. 10.2.1.2.4 NTC Selection
          5. 10.2.1.2.5 Checking Loop Stability
          6. 10.2.1.2.6 LED Flash Current Level Optimization Versus Battery Droop
        3. 10.2.1.3 Application Curves
      2. 10.2.2 1200-mA High Power White LED Solution Featuring Voltage Mode
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

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订购信息

6 Pin Configuration and Functions

YFF Package
20-Pin DSBGA
Top View

Pin Functions

PIN I/O DESCRIPTION
NO. NAME
A1 INDLED O This pin provides a constant current source to drive low VF LEDs. Connect to LED anode.
A2 VOUT O This is the output voltage pin of the converter.
A3, A4 AGND — Analog ground.
B1 SDA I/O Serial interface address and data line. This pin must not be left floating and must be terminated.
B2 SCL I Serial interface clock line. This pin must not be left floating and must be terminated.
B3 NRESET I Master hardware reset input.
NRESET = LOW: The device is forced in shutdown mode and the I2C control I/F and all internal control registers are reset.
NRESET = HIGH: The device is operating normally under the control of the I2C interface.
B4 STRB0 I LED1, LED2, and LED3 enable logic input. This pin can be used to enable or disable the high-power LEDs connected to the device.
STRB0 = LOW: LED1, LED2 and LED3 current regulators are turned off.
STRB0 = HIGH: LED2, LED2 and LED3 current regulators are active. The LED current level (video light or flash current) is defined according to the STRB1 logic level.
C1, C2 SW I/O Inductor connection. Drain of the internal power MOSFET. Connect to the switched side of the inductor. SW is high impedance during shutdown.
C3 Tx-MASK I RF PA synchronization control input. Pulling this pin high turns the LED from flash to video light operation, thereby reducing almost instantaneously the peak current loading from the battery.
C4 TS I NTC resistor connection. This pin can be used to monitor the LED temperature. Connect a 220-kΩ NTC resistor from the TS input to ground. In case this functionality is not desired, the TS input must be tied to AVIN or left floating.
D1, D2 PGND — Power ground. Connect to AGND underneath IC.
D3 STRB1 I LED current level selection input. Pulling this input high disables the video light watchdog timer.
STRB1 = LOW: flash mode is enabled.
STRB1 = HIGH: video light mode is enabled.
D4 GPIO/PG I/O This pin can either be configured as a general purpose I/O pin (GPIO) or either as an open-drain or a push-pull output to signal when the converters output voltage is within the regulation limits (PG). Per default, the pin is configured as an open-drain Power Good output.
E1 LED2 I
E2 LED1 I LED return input (current sinks). This feedback pin regulates the LED current through the internal sense resistor by regulating the voltage across it. Connect to the cathode of the white LEDs.
E3 LED3 I
E4 AVIN I This is the input voltage pin of the device. Connect directly to the input bypass capacitor.