LTM4644-1 Drop-in Replacement — HGCHIPS HG4644

Sourcing an alternative to LTM4644-1 (ADI µModule)? HGCHIPS HG4644 is pin-to-pin compatible with its base part LTM4644 (四路 4A（可并联 16A），与 LTM4644 同封装同引脚), so it drops into the existing PCB with no circuit change.

Cross-reference

Replacement Notes

• LTM4644-1 and LTM4644 share the same package and pin-out, so the original design can be replaced directly.
• Output capability and external component configuration match the base part.
• Validate with a 10 pcs sample on your platform (efficiency, ripple, temperature rise) before volume ramp.

Contact: info@hgtech.cc · +86 760 8992 4799

Frequently asked questions

LTM4644-1 — can it drop in without board changes?

No board changes. LTM4644-1 is mapped to LTM4644-1 and designed as a pin-to-pin drop-in: package and pin-out are checked field by field against the original datasheet, so it fits the existing PCB and firmware. Typical use is second-sourcing, EOL cover and allocation shortages.

How do I use the selection table?

Find your original part number, then check density, organization, speed grade, voltage, package and temperature range against your BOM. Any field that differs is stated on the page — we do not claim the parts are identical.

LTM4644-1 — samples and lead time?

Samples from 10 pcs, credited against the first order. In-stock items ship from Shenzhen within 48 hours; long-lead projects can be price-locked. Parts are 100% inspected before shipment and batch test data is available for IQC.

How do I request a quote for LTM4644-1?

Send your target part number, monthly usage and target price to info@hgtech.cc or call +86 760 8992 4799 — we reply within 24 business hours (same day for stock parts).