Product Short Description
The Analog Devices LTM4644IY#PBF is a complete quad-output step-down µModule® (micromodule) regulator integrating the switching controller, power FETs, inductor, and support components in a compact 9 mm × 15 mm × 5.01 mm BGA package. Each of the four channels delivers up to 4 A continuous (5 A peak) output current, and channels can be easily paralleled to provide a single high-current rail up to 16 A.
Key Specifications:
- Input Voltage Range: 4 V to 14 V (2.375 V to 14 V with external bias)
- Output Voltage Range: 0.6 V to 5.5 V (adjustable)
- Output Current: 4 A DC per channel (5 A peak); parallelable to 16 A total
- Total Power Dissipation: 5.5 W max (T_A = 60 °C, 200 LFM airflow, no heatsink)
- Output Voltage Accuracy: ±1.5% (total regulation)
- Control Mode: Current-mode for fast transient response
- Features: Output voltage tracking, internal temperature sense diode output, external frequency synchronization, overvoltage/overcurrent/overtemperature protection
- Efficiency: High-efficiency design requiring only bulk input/output capacitors
- Package: 9 × 15 × 5.01 mm BGA (LTM4644IY#PBF)
- Operating Temperature: –40 °C to +125 °C (junction)
Typical Applications:
- Multi-rail point-of-load (POL) power for FPGAs, DSPs, ASICs, and microprocessors
- High-density embedded systems and server/compute boards
- Telecom, networking, and industrial equipment
- Battery-powered and intermediate bus (3.3 V / 5 V / 12 V) conversion
- Space-constrained designs requiring multiple low-voltage rails with excellent thermal performance
The LTM4644IY#PBF offers exceptional power density, simplified layout, fast transient response, and robust protection — making it an ideal turnkey solution for demanding multi-output or high-current POL applications in space-limited, high-performance electronics.
