Summary of HIGH EFFICIENCY, ULTRA LOW EMI STEP-DOWN POWER MODULE
The LTM8002 is a compact, high-efficiency step-down µModule regulator featuring 40V input and 2.5A continuous output current. It integrates controllers, switches, and inductors, requiring only external capacitors and resistors. Ideal for automotive and industrial point-of-load applications, it supports wide temperature ranges, adjustable frequencies, and multiple operating modes like Burst Mode for low quiescent current.
Parts used in the LTM8002 Project:
- LTM8002 power module
- Bulk input capacitor
- Bulk output capacitor
- Adjustment resistor
- Synchronization resistor
- External clock source (optional)
The Power by Linear LTM8002 is a step-down DC/DC µModule (power module) regulator with a 40V input voltage rating (42V abs max) and 2.5A of continuous (3.5A peak) output current, housed in a 6.25mm x 6.25mm x 2.22mm BGA package.
The LTM8002 includes a switching regulator controller, power switches, inductor and other supporting components. Only the bulk input,output capacitors and two resistors are required to complete the design.
The LTM8002 H grade can deliver 2.8A of output current up to 105°C ambient without a heat sink or airflow under the 12VIN to 5VOUT condition. The device’s wide input voltage range, FMEA compliant pinout, high-temperature operation and small solution provide an ideal point-of-load regulator for applications requiring stricter reliability and higher durability, such as automotive and industrial equipment.
The switching frequency is adjustable with a resistor or can be synchronized to an external clock from 200kHz to 3MHz to avoid interference by operating the device in or out of a system’s specific frequency or frequency range. The LTM8002 has four modes: Burst Mode operation, pulse-skipping mode, pulse-skipping mode with spread spectrum mode and external synchronization mode. The quiescent current in Burst Mode operation is 25µA, ideal for battery-operated systems, specifically for systems that require a “keep alive” function.
The output voltage is adjustable with one resistor from 0.97V to 18V or fixed at 3.3V. This wide output voltage range provides the versatility of using one product to generate common system bus voltages of 3.3V, 5V, 12V and 15V.
The LTM8002 is operational from –40°C to 125°C or –40°C to 150°C.
Source: HIGH EFFICIENCY, ULTRA LOW EMI STEP-DOWN POWER ΜMODULE
- What is the maximum input voltage rating of the LTM8002?
The device has a 40V input voltage rating with a 42V absolute maximum. - How can the switching frequency be adjusted on this module?
The frequency is adjustable using a resistor or by synchronizing to an external clock between 200kHz and 3MHz. - Can the LTM8002 operate without a heat sink at high temperatures?
Yes, the H grade delivers 2.8A up to 105°C ambient without a heat sink or airflow under specific conditions. - What are the available output voltage options for the regulator?
The output is adjustable from 0.97V to 18V with one resistor or fixed at 3.3V. - Which mode is best for battery-operated systems requiring low power?
Burst Mode operation provides a quiescent current of 25µA, ideal for keep-alive functions. - Does the LTM8002 support synchronization to avoid interference?
Yes, it offers an external synchronization mode to operate in or out of specific system frequency ranges. - What is the operational temperature range of the device?
The module operates from –40°C to 125°C or –40°C to 150°C. - How many components are required externally to complete the design?
Only bulk input/output capacitors and two resistors are needed besides the module itself.
