# ADI LTM4705 Compatible Replacement — HGCHIPS HG4705 20VIN, Dual 5A / Single 10A Step-Down µModule

> HGCHIPS HG4705 is the pin-to-pin compatible replacement for Analog Devices LTM4705 — the 20V-input, dual 5A (or single 10A stacked) step-down µModule regulator in a 6.25mm × 7.5mm × 3.22mm BGA. Its 3.1V–20V input window covers both 12V and 5V distribution buses, the 0.6V–5.5V output window covers core through I/O rails, and current-mode control with external frequency synchronization and multiphase paralleling makes it the default mid-power PoL for industrial, networking and telecom boards. ADI lists LTM4705 from US$14.03/pc at 1Ku as recommended for new designs. The HG4705 ships from stock in the identical footprint, drops onto the existing LTM4705 layout with no board change, and is bench-verified against the ADI reference profile. Samples available immediately for board validation.

## Specifications

| Parameter | Value |
| --- | --- |
| Reference part number | Analog Devices LTM4705 (20VIN, Dual 5A or Single 10A Step-Down µModule regulator) |
| HGCHIPS series | HG4705 — µModule-compatible series (full P/N via FAE) |
| Topology | Step-down (buck) µModule regulator — controller, power MOSFETs, inductor and support components in one package |
| Input voltage | 3.1 V to 20 V |
| Output voltage | 0.6 V to 5.5 V (single-resistor set) |
| Max continuous output current | Dual 5 A, or single 10 A when channels are paralleled |
| Total DC regulation error | ±1.5% max over load, line and temperature |
| Control | Current mode; fast transient response |
| Switching frequency | Externally synchronizable |
| Parallel operation | Multiphase parallelable with current sharing |
| Features | Output voltage tracking and soft-start; selectable Burst Mode operation; input overvoltage and overtemperature protection; Power Good indicators |
| Package | BGA, 6.25 mm × 7.5 mm × 3.22 mm |
| Reference status | Recommended for new designs (per analog.com, checked 2026-11-13) |

Electrical parameters referenced from the Analog Devices official product page (analog.com/en/products/ltm4705.html); HGCHIPS replacement parameters verified to match the reference profile. Market signals retrieved 2026-11-13; dates shown per row.

## Why HGCHIPS

- Top-tier engineering — design team from China's leading chip design companies and research institutes
- First-tier supply chain — domestic first-rank wafer fab, world top-3 substrate supplier, top-3 domestic packaging & test
- Pin-to-pin footprint — same 6.25 mm × 7.5 mm BGA land pattern and pinout; drops onto the existing LTM4705 layout with no board change
- Bench-verified — output noise, transient and efficiency verified against the ADI reference profile on the evaluation board; comparison report available under NDA
- HG47xx naming — HGCHIPS µModule-compatible series follows the original family number; full P/N via FAE
- 24-hour quotes — BOM line in, firm price and lead time back the same business day

## Market signals

| Signal | Detail | Source |
| --- | --- | --- |
| Official list pricing | Analog Devices lists LTM4705 from US$14.03/pc at 1Ku on the official product page — one of the cheapest complete 20V µModule solutions ADI offers. | analog.com/en/products/ltm4705.html, checked 2026-11-13 |
| Franchised stock thin | Catalog checks on 2026-11-13 show franchised distributors surfacing mainly the DC3051A demonstration board for this grade rather than tube/tray IC stock — the IC itself is moving through contract channels. | digikey.com / mouser.com LTM4705 catalog check, checked 2026-11-13 |
| Mature, active grade | Launch coverage dates to Jul 2022 (All About Circuits product brief) and ADI still marks the part recommended for new designs — a stable, high-volume 12V-bus PoL that suits a second-source strategy. | allaboutcircuits.com new product brief 2022-07-19; analog.com status, checked 2026-11-13 |
| HGCHIPS supply position|HG4705 samples from stock for board validation; volume pricing at quotation — positioned at parity with ADI 1Ku list for volume commitments; 48h sample shipment.|HGCHIPS price list, Nov 2026 |

## FAQ

**Q: Is HG4705 a drop-in replacement for LTM4705?**

Yes — same 6.25mm × 7.5mm BGA land pattern and pinout, same single-resistor output setting, tracking/soft-start and Burst Mode behavior. It drops onto an existing LTM4705 layout with no board change. Sample evaluation on your board is recommended before production release.

**Q: Can HG4705 parallel for a single 10A rail?**

Yes — both channels can be combined for a single 10A output, and multiple parts can be paralleled in multiphase with current sharing and external frequency synchronization, matching the ADI reference configurations.

**Q: What is the real lead time and price?**

Samples ship within 48 hours. Volume pricing is quoted per BOM line — positioned at parity with the ADI 1Ku list (US$14.03) for volume commitments, well below single-unit distributor pricing where available.

## Contact

Quote: info@hgtech.cc (subject: LTM4705 replacement) · +86 760 8992 4799 · WhatsApp +852 9298 5589
Room 301-319, 3/F, Longde Building, Wuguishan Street, Zhongshan 528400, Guangdong, China
Page: https://hgchips.net/parts/ltm4705.html · Last updated: 2026-11-13