Overview
The LTM4644EY#PBF, produced by Analog Devices Inc., is a quad DC/DC step-down µModule (micromodule) regulator. This device features four independent output channels, each capable of delivering up to 4A of continuous output current, with a peak current of 5A. The outputs can be paralleled to achieve higher current capabilities, up to 16A. The LTM4644EY#PBF includes switching controllers, power FETs, inductors, and all necessary support components within a single package, simplifying the design and implementation process. It operates over an input voltage range of 4V to 14V, or 2.375V to 14V with an external bias supply, and supports an output voltage range of 0.6V to 5.5V.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| VIN (Input DC Voltage) | SVIN = VIN | 4 | 14 | V | |
| VOUT (Output Voltage Range) | 0.6 | 5.5 | V | ||
| IOUT (Output Current per Channel) | 4A (DC), 5A (Peak) | A | |||
| Power Dissipation | TA = 60°C, 200 LFM, No Heat Sink | 5.5 | W | ||
| Output Voltage Regulation | ±1.5% | % | |||
| Operating Temperature Range | –40°C | 125°C | °C | ||
| Package Type | 77-BBGA Module | ||||
| Package Dimensions | 9mm × 15mm × 5.01mm |
Key Features
- Quad Output Step-Down µModule Regulator with 4A per Output
- Wide Input Voltage Range: 4V to 14V, or 2.375V to 14V with External Bias
- Output Voltage Range: 0.6V to 5.5V
- High Efficiency Design with 4A DC, 5A Peak Output Current per Channel
- Up to 5.5W Power Dissipation (TA = 60°C, 200 LFM, No Heat Sink)
- ±1.5% Total Output Voltage Regulation
- Current Mode Control, Fast Transient Response
- Parallelable for Higher Output Current
- Output Voltage Tracking
- Internal Temperature Sensing
- External Frequency Synchronization
- Overvoltage, Current, and Temperature Protection
Applications
- Multirail Point of Load Regulation
- FPGAs, DSPs, and ASICs
- Configurable output arrays for various voltage requirements (e.g., 1.2V, 1.5V, 2.5V, 3.3V)
- Systems requiring high current and low voltage outputs, such as data centers and high-performance computing
- Interface with PMBus power system management supervisory ICs like the LTC2975
Q & A
- What is the input voltage range of the LTM4644EY#PBF?
The input voltage range is 4V to 14V, or 2.375V to 14V with an external bias supply.
- How much output current can each channel deliver?
Each channel can deliver up to 4A of continuous output current, with a peak current of 5A.
- What is the maximum power dissipation of the LTM4644EY#PBF?
The maximum power dissipation is up to 5.5W at TA = 60°C, 200 LFM, with no heat sink.
- Can the outputs be paralleled for higher current?
- What is the operating temperature range of the LTM4644EY#PBF?
- What type of package does the LTM4644EY#PBF come in?
- Does the LTM4644EY#PBF have built-in protection features?
- Can the LTM4644EY#PBF be used with PMBus power system management ICs?
- What are some typical applications of the LTM4644EY#PBF?
- Does the LTM4644EY#PBF require additional components for operation?
