LTM4644EY#PBF - Quad 4A DC/DC μModule Regulator | Analog Devices
MPN: LTM4644EY#PBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.72 | $38.72 |
| 10 | $35.5 | $355.00 |
| 100 | $32 | $3,200.00 |
| 500 | $30.94 | $15,470.00 |
| 1,000 | $30.94 | $30,940.00 |
Drop-in alternatives for LTM4644EY#PBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTM4644IY#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4644EY-1#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4644IY-1#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
TPS65240DRCR
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4643EY#PBF
✅ Drop-In✓ In Stock
$20.37 / Unit
View Datasheet →LTM4644EY#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Output Voltage Range | 0.6 V to 5.5 V |
| Maximum Output Current | 4A per channel, up to 16A parallel |
| Input Voltage Range | 4 V to 14 V |
| Number of Outputs | 4 |
| Efficiency | Up to 95% |
| Switching Frequency | [DATA_NEEDED: switching frequency] |
| Operating Temperature | -40°C to 125°C |
| Package | BGA (μModule) |
| Mounting Type | Surface Mount |
| Features | OCP, OTP, OVP |
| Applications | ITE (Commercial) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 Hours) |
| REACH | Unaffected |
LTM4644EY#PBF Pin Configuration
| Pin A1 | VIN — Power input for the top MOSFET |
| Pin A2 | SVIN1 — Signal input for channel 1 control circuitry |
| Pin A3 | VOUT1 — Output voltage for channel 1 |
| Pin A4 | VOUT2 — Output voltage for channel 2 |
| Pin B1 | GND — Ground |
| Pin B2 | SVIN2 — Signal input for channel 2 control circuitry |
| Pin B3 | VOUT3 — Output voltage for channel 3 |
| Pin B4 | VOUT4 — Output voltage for channel 4 |
| Pin C1 | RUN1 — Enable pin for channel 1 |
| Pin C2 | RUN2 — Enable pin for channel 2 |
| Pin C3 | RUN3 — Enable pin for channel 3 |
| Pin C4 | RUN4 — Enable pin for channel 4 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LTM4644EY#PBF is suitable for 6 applications: FPGA Power Supply, Networking Equipment, Industrial Automation, Telecommunications, Data Center Servers, Test and Measurement.
FPGA Power Supply
The LTM4644EY#PBF provides multiple low-voltage rails required by FPGAs, such as core, I/O, and auxiliary voltages. Its quad 4A outputs can be paralleled for higher current, and the wide input range accommodates various system buses. The high efficiency reduces thermal stress, and the integrated inductors simplify layout, making it ideal for space-constrained designs.
Recommended
Networking Equipment
In networking switches and routers, the LTM4644EY#PBF powers processors, ASICs, and memory. Its 4V to 14V input range suits intermediate bus architectures, and the configurable outputs allow multiple rails from one module. The module's high efficiency and small footprint enable dense board layouts, while OCP and OTP protections ensure reliable operation in continuous-duty environments.
Recommended
Industrial Automation
The LTM4644EY#PBF is suitable for industrial control systems, PLCs, and robotics, where reliable power delivery is critical. Its -40°C to 125°C operating range handles harsh environments, and the integrated design reduces failure points. The module's ability to parallel outputs provides scalability for varying load requirements, and its protection features safeguard against faults.
Recommended
Telecommunications
For telecom infrastructure, the LTM4644EY#PBF powers base stations and line cards. Its high efficiency reduces heat dissipation in sealed enclosures, and the wide input range accommodates 12V or 14V buses. The quad outputs can supply different voltage levels for various ICs, and the module's small size allows high-density board designs, essential for meeting space constraints in telecom equipment.
Recommended
Data Center Servers
In servers, the LTM4644EY#PBF powers CPUs, memory, and storage controllers. Its high efficiency reduces energy costs, and the configurable outputs support various voltage requirements. The module's integrated inductors and MOSFETs simplify design, and its parallel capability allows scaling for higher current. The wide input range is compatible with common server power architectures.
Recommended
Test and Measurement
The LTM4644EY#PBF is used in test equipment, oscilloscopes, and signal generators, where clean and stable power is essential. Its low output noise and high PSRR ensure minimal interference with sensitive analog circuits. The module's multiple outputs can power different sections of the instrument, and its compact size allows for portable designs.
Recommended
Recommended Products Summary
Engineering reference data for LTM4644EY#PBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTM4644IY#PBF | LTM4644EY-1#PBF | TPS65240DRCR |
|---|---|---|---|---|
| Package | BGA (μModule) | BGA (μModule) | BGA (μModule) | BGA (μModule) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Output Current per Channel | 4A | 4A | 4A | [DATA_NEEDED] |
| Input Voltage Range | 4V to 14V | 4V to 14V | 4V to 14V | [DATA_NEEDED] |
| Output Voltage Range | 0.6V to 5.5V | 0.6V to 5.5V | 0.6V to 5.5V | [DATA_NEEDED] |
| Number of Outputs | 4 | 4 | 4 | [DATA_NEEDED] |
| Operating Temperature | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | [DATA_NEEDED] |
| Efficiency | Up to 95% | Up to 95% | Up to 95% | [DATA_NEEDED] |
Key Differentiators
- Quad 4A outputs with parallel capability up to 16A (vs TPS65240DRCR)
- Integrated inductors and MOSFETs (vs Discrete DC/DC solutions)
- Wide input voltage range of 4V to 14V (vs LTM4643EY#PBF)
Design Notes
The LTM4644EY#PBF can dissipate significant power at high output currents. Ensure adequate PCB copper area and thermal vias under the module to keep the junction temperature within limits. The datasheet provides thermal derating curves; refer to them for your specific operating conditions.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. The datasheet recommends specific capacitor values and types; follow these guidelines for stable operation.
Do not exceed the absolute maximum input voltage of 14V. Ensure proper sequencing of the RUN pins if multiple channels are used. The SVIN pins can operate from 2.375V, but the VIN pins require the full input voltage. Refer to the datasheet for detailed application circuits.
Compliance Information
RoHS3 compliant and REACH unaffected per PartGenie. MSL 3 (168 hours).
