1 Features

• Voltage-controlled current driver (current sink)

• Supports output currents from 50mA to 5A

• Drives continuous and pulsed currents

– Rise time (tr): 800ps rise time

– Pulse train: DC to 250MHz

• Low-current and high-current modes

• 18V tolerance on IOUT

• Supports LVDS, TTL, CMOS logic

• Wide power supply voltage: 3V to 5.5V

• Monolithic laser driver eliminates the need for

external FET

• Integrated thermal shutdown and power-down

2 Applications

• TOF range finders

• Industrial optical sensors

• 3D scanning and gesture recognition

• OTDR

• High speed current loads

• Industrial safety light curtains

• Medical IVD and flow cytometry

• LiDAR Module

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 surfaceemitting

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 5Apulsed

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).