HG4644 is a pin-compatible replacement for ADI LTM4644 / LTM4644T, a point-of-load DC-DC uModule regulator. It matches 4V~14V input, 0.6V~5.5V output, 16A single output / 4A quad output and a BGA footprint, so no board redesign is required. Samples start at 10 pcs with lot-level test reports.
Every field below is compared against the original manufacturer's public datasheet before a module is offered as a replacement.
| Parameter | LTM4644 / LTM4644T (original) | HG4644 (HGCHIPS) | Match |
|---|---|---|---|
| Package size | 10mm×16mm×6.9mm | 10mm×16mm×6.9mm | ✔ Same |
| Input voltage (VIN) | 4V~14V | 4V~14V | ✔ Same |
| Output voltage (VOUT) | 0.6V~5.5V | 0.6V~5.5V | ✔ Same |
| Output current | 16A single output / 4A quad output | 16A single output / 4A quad output | ✔ Same |
| Outputs | Quad output | Quad output | ✔ Same |
| Conversion type | Step-down (buck) | Step-down (buck) | ✔ Same |
| Footprint / package | BGA | BGA | ✔ Same |
| HG4644 covers | LTM4644 (6.9 mm package) | LTM4644 (6.9 mm package) | ✔ Same |
| HG4644T covers | LTM4644T (5.4 mm low-profile package) | LTM4644T (5.4 mm low-profile package) | ✔ Same |
HG4644 covers both LTM4644 (10mm×16mm×6.9mm) and LTM4644T (10mm×16mm×5.4mm) footprint variants.
Compatibility is based on electrical and mechanical comparison against the original manufacturer's public datasheet. Always qualify on your platform before volume use; test reports and application support are provided.
The HG module line is held on a long-term availability commitment — designed for programs that outlive OEM allocation.
Functional validation with traceable per-lot records, shipped with every lot.
Footprint, thermal and loop-stability verification support from our Taiwan and Shenzhen team.
Yes. HG4644 is engineered as a pin-compatible replacement for LTM4644 / LTM4644T: 4V~14V input, 0.6V~5.5V output, 16A single output / 4A quad output, in a BGA footprint. The land pattern and pin-out are compared against the original manufacturer's public datasheet before the part is offered.
Verify footprint and pin-out, input and output voltage ranges, output current headroom, switching frequency and loop stability on your load, thermal performance in your layout, and output ripple. We provide datasheets, test reports and application support for every model.
HG4644 is carried on our High-turn line basis (one of our highest-turn ADI µModule lines, held as stock positions). Stock lines dispatch within 48 hours from Shenzhen; non-stock and long-lifecycle quantities are quoted with a confirmed lead time. Send your target quantity and we confirm availability the same day.
Samples start at 10 pcs, with sample cost credited against your first production order.
Our Taiwan engineering team compares the footprint, pin-out, voltage and current ranges against the original datasheet, and the module is functionally validated with traceable per-lot records. Always qualify on your own board before volume use.
Send your BOM line and load conditions — we confirm compatibility, share test reports and quote within 24 business hours.
Request a Quote Full HG4644 specification →HG4644 is carried on our High-turn line basis — one of our highest-turn ADI µModule lines, held as stock positions. Stock lines dispatch in 48 hours from Shenzhen; long-lifecycle programmes can be price-locked. Availability is confirmed against current physical positions at quotation.
Stock lines ship in 48 hours from Shenzhen after order confirmation.
Non-stock and long-lifecycle programmes are quoted with a confirmed lead time — send your target quantity for a dated answer.
10 pcs MOQ for evaluation, sample cost credited against your first production order.
Supply mode is published on our ADI µModule stock page. Stock levels and lead times are indicative and confirmed at quotation.
LTM4650 alternative LTM4700 alternative LTM4600 alternative
See the full part number index or the ADI uModule compatible line.