SLOSEB6D February   2025  – November 2025 LMH13000

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics for Low-Current Mode, MODE = 0
    6. 5.6 Electrical Characteristics for High-Current Mode, MODE = 1
    7. 5.7 Typical Characteristics
    8. 5.8 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Constant Current (ICC)
      2. 6.3.2 Propagation Delay With Temperature
        1. 6.3.2.1 Calibration of Propagation Delay With Temperature
        2. 6.3.2.2 Start Pulse Directly From IOUT
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Optical Time-of-Flight System
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Automatic Power-Control Loop Using the LMH13000
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RQE|13
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The LMH13000 is a voltage-controlled current source that enables accurate current control for indirect time-of-flight (iToF) and direct time-of-flight (dToF) laser applications. The LMH13000 supports fast rise and fall times (< 1ns) for pulsed current-output applications without the need for an external FET. The LMH13000 can drive multiple laser types including: edge-emitting lasers (EEL), vertical-cavity surface-emitting lasers (VCSEL), and more. The VSET pin accurately adjusts the load current to compensate against variations for temperature and aging of the laser diode.

The LMH13000 delivers up to 1A-continuous or 5A-pulsed current depending on frequency, duty cycle, and heat dissipation. The LMH13000 comes in a TI proprietary HotRod™ package. This package eliminates the internal bond wires that help achieve a very low inductance in the high-current path, thereby enabling the design to achieve faster current rise and fall times. The integrated thermal shutdown protects the die in case of excessive die temperature. The LVDS inputs (EP and EN) enable control of the output current on-time, frequency, and duty cycle. The LMH13000 operates between 3V to 5.5V, with a specified ambient temperature range of –40°C to +125°C (maximum die temperature of 150°C).

Package Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2)
LMH13000 RQE (VQFN-HR, 13) 3.5mm × 3mm
(1) For more information, see Section 10.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
LMH13000 Functional Block Diagram Functional Block Diagram