LTM80xx pin-to-pin replacement — HG80xx drop-in guide

If your design uses an Analog Devices LTM80xx wide-input step-down uModule regulator, HGCHIPS supplies PIN2PIN compatible replacements from stock. Eight part numbers are covered today — from LTM8023 through LTM8056 — each matching its original footprint and ball-out, with no layout change expected.

What a PIN2PIN uModule replacement actually means

It means the mechanical interface and the electrical function envelope stay the same, so your layout, your feedback divider and your sequencing stay as designed. It does not mean the two parts are electrically identical in every corner parameter — switching edges, ripple and thermal behaviour differ between suppliers even when the part number family matches. That is why every second source should go through the same five-point check below rather than being released on the strength of a pin map alone.

Qualification checklist for a wide-input uModule second source

1. Height and clearance. Measure the keep-out above the module before you fix the part height.
2. First-article comparison. Output accuracy, ripple, load-step transient and start-up sequencing at your actual Vin, load and temperature.
3. Thermal rise. Worst-case ambient at full load, on your own board, not on a test jig.
4. EMI/EMC spot check. Confirm the existing input filter is still sufficient with the new switching edges.
5. Traceability paperwork. Lot test reports and the cross-reference sheet go into your component-engineering file so the second source is auditable.

Start with a small batch: MOQ is 10 pcs and stock ships within 48 h from Shenzhen. The datasheet, mechanical drawing, cross-reference sheet and lot test reports can go out with the samples.

Full cross-reference: LTM80xx

ADI uModule POL DC-DC (LTM80xx) — 8 part numbers

Frequently asked questions about LTM80xx replacement

Is there a pin-to-pin replacement for the LTM80xx uModule family?

Yes. For each original LTM80xx part number listed on this page there is a matching HG80xx part number covering the same wide-input step-down uModule function on the same footprint and ball-out: LTM8023 / 8025 / 8026 / 8027 / 8033 / 8052 / 8055 / 8056 map to HG8023, HG8025, HG8026, HG8027, HG8033, HG8052, HG8055 and HG8056 respectively.

Which LTM80xx part numbers are covered today?

Eight: LTM8023 / 8025 / 8026 / 8027 / 8033 / 8052 / 8055 / 8056. If your part number is not in the list, send it - we check it against our portfolio and supply channel rather than proposing something that does not fit.

Do I need to change my PCB layout or my external components?

The land pattern and ball-out match the original part, so no layout change is expected and the feedback divider, soft-start and compensation components stay as designed. Every second source still needs a first-article comparison on your own board: output accuracy, ripple, load-transient response, thermal rise and start-up sequencing.

What is the minimum order quantity and can I get samples?

MOQ is 10 pcs and stock ships within 48 hours from Shenzhen. For qualification we can supply a small batch together with the datasheet, mechanical drawing, cross-reference sheet and lot test reports.

How should a uModule second source be qualified?

Five checks: height and clearance above the module, first-article comparison at your real Vin/load/temperature, thermal rise at worst-case ambient, an EMI spot check (switching edges differ between suppliers even at the same switching frequency), and traceability paperwork for your component-engineering file.

Are these parts re-marked or refurbished?

No. HGCHIPS parts are independently engineered replacements supplied with traceability and lot test reports. They are not original-brand product and they are not re-marked original material.