# ADI LTM4703 Compatible Replacement — HGCHIPS HG4703 16VIN, 12A Silent Switcher 3 µModule

> HGCHIPS HG4703 is the pin-to-pin compatible replacement for Analog Devices LTM4703 — the 16V-input, 12A step-down µModule regulator built on third-generation Silent Switcher architecture (8µVRMS output noise, ±1.5% DC accuracy, 300kHz–3MHz synchronization) in a 6.25mm × 6.25mm × 5.07mm BGA. ADI positions LTM4703 as recommended for new designs with 1Ku list pricing from US$20.46 and single-unit distributor pricing well above that — while delivery stretches on the newest speed grades, the HG4703 ships from stock in the same 49-ball footprint, drops onto the existing LTM4703 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 LTM4703 (16VIN, 12A Silent Switcher 3 µModule regulator) |
| HGCHIPS series | HG4703 — µModule-compatible series (full P/N via FAE) |
| Topology | Step-down (buck) µModule regulator — controller, power MOSFETs, inductor and support components in one package |
| Architecture | Silent Switcher 3 — internal hot-loop bypass capacitors, ultralow EMI |
| Input voltage | 3 V to 16 V |
| Output voltage | 0.3 V to 6 V (single-resistor set, unity-gain operation) |
| Max continuous output current | 12 A |
| Output noise | 8 µVRMS (10 Hz – 100 kHz) |
| Total DC output error | ±1.5% max over line, load and temperature |
| Switching frequency | 300 kHz to 3 MHz — resistor-set, externally synchronizable |
| Operating mode | Pulse-skipping / forced continuous mode (FCM) via SYNC pin |
| Parallel operation | Multiphase parallel with current sharing; CLKOUT for stacking |
| Package | 49-ball BGA, 6.25 mm × 6.25 mm × 5.07 mm |
| Reference orderable models | LTM4703EY#PBF (industrial grade); evaluation board EVAL-LTM4703-AZ |
| Reference status | Recommended for new designs (per analog.com, checked 2026-11-12) |

Electrical parameters referenced from the Analog Devices official product page (analog.com/en/products/ltm4703.html); HGCHIPS replacement parameters verified to match the reference profile. Market signals retrieved 2026-11-12; 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 49-ball BGA land pattern and pinout; drops onto the existing LTM47xx 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 LTM4703 from US$20.46/pc at 1Ku on the official product page — the newest 12A grade of the Silent Switcher 3 family. | analog.com/en/products/ltm4703.html, checked 2026-11-12 |
| Distributor listing live | DigiKey lists LTM4703EY#PBF with the EVAL-LTM4703-AZ evaluation board in stock (861 pcs at US$39.02) — design-in activity on the newest grade is ramping while single-unit regulator pricing carries the usual new-release premium. | digikey.com LTM4703EY-PBF / EVAL-LTM4703-AZ pages, checked 2026-11-12 |
| Family momentum | ADI published "Low Noise, High Efficiency µModule Regulators with Silent Switcher" (Jun 26, 2026) and the technical article "Minimizing Noise in High-Current Applications Using Tiny µModule Regulators" (Sep 14, 2026) — the LTM4702/4703/4707 family is ADI's current low-noise push for data-center point-of-load. | analog.com media center / technical articles, Jun–Sep 2026 |
| HGCHIPS supply position|HG4703 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 HG4703 a drop-in replacement for LTM4703?**

Yes — same 49-ball BGA land pattern, pinout, compensation and programming model (single resistor sets output voltage; SYNC selects PSM/FCM). It drops onto an existing LTM4703 layout with no board change. We still recommend a sample evaluation on your board before production release; samples ship immediately.

**Q: How does HG4703 compare on noise and accuracy?**

The HG4703 is bench-verified against the ADI reference profile: 8µVRMS-class output noise (10Hz–100kHz), ±1.5% max total DC error, and 300kHz–3MHz synchronization range. The evaluation comparison report is available under NDA.

**Q: What about temperature grades and the EY/IY suffix?**

The reference LTM4703EY#PBF is the industrial grade. Tell us your exact BOM line (including any MP/MIL requirements) and we confirm the matching HG4703 grade in writing before you commit.

## Contact

Quote: info@hgtech.cc (subject: LTM4703 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/ltm4703.html · Last updated: 2026-11-12