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

6.4 Device Functional Modes

The LMH13000 operates in three modes: two operating and one power-down.

  • Normal-operating mode (PD = 0):
    • Low-current mode (MODE = 0)
    • High-current mode (MODE = 1)
  • Power-down mode (PD = 1)

In normal-operating mode, PD = 0, MODE is 0 or 1. Based on LVDS = 0 or 1, IOUT allows or blocks the current flow.

  • In low-current mode (MODE = 0):
    Equation 4. I O U T   =   V S E T R S E T   ×   k   ;   k   =   10000
    • VSET is from 0.01 to 2V, which sets IOUT to be from 5mA to 1A.
    • Low-current mode enables a lower quiescent operating current.
    • The headroom required on IOUT is relatively higher compared to high-current mode.
    • When biased with the same voltage for laser diode bias (VLD), low-current mode results in lower overshoots compared to that of high-current mode.
  • In high-current mode (MODE = 1)
    Equation 5. I O U T   =   V S E T R S E T   ×   k   ;   k   =   50000
    • VSET is from 0.1 to 2V, which sets IOUT from 250mA to 5A.
    • High-current mode consumes a relatively higher quiescent operating current.
    • The headroom required on IOUT is relatively lower compared to low-current mode.
    • Higher overshoots are observed when biased with the same VLD as compared to that of low-current mode.

In power-down mode (PD = 1), the output is effectively disabled, and the device operates with very low quiescent current, with only minimal leakage observed at IOUT.

Table 6-1 Truth Table
PD MODE LVDS(1) IOUT(2) ICC(3)
0 0 LVDS = 1 VSET / RSET × 10k 100 / RBIAS
0 1 LVDS = 1 VSET / RSET × 50k 100 / RBIAS
0 X(3) LVDS = 0 ILEAK 100 / RBIAS
1 X X ILEAK 0A
(1)
  1. LVDS = 0; EP – EN < –100mV
  2. LVDS = 1; EP – EN > 100mV
(2) IOUT(TOTAL) = IOUT + ICC
(3) Assuming a resistor connected between RBIAS and AGND. If RBIAS = AVDD, then ICC = 0A.
(4) X = don't care.