Overview
The FDMF5833-F085 is a Smart Power Stage (SPS) Module developed by ON Semiconductor. This module is part of ON Semiconductor’s next-generation, fully optimized, ultra-compact integrated MOSFET plus driver power stage solution. It is designed for high-current, high-frequency synchronous buck DC-DC applications. The module integrates a driver IC with a bootstrap Schottky diode, two power MOSFETs, and a thermal monitor into a thermally enhanced 5 mm x 5 mm PQFN package. This integrated approach optimizes driver and MOSFET dynamic performance, minimizes system inductance, and reduces power MOSFET RDS(ON).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Maximum Current Handling | - | - | 50 | A |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| UVLO Threshold (VCC Rising) | 3.5 | 3.8 | 4.1 | V |
| PWM Minimum Controllable On-Time | - | - | 30 | ns |
| Shutdown Current | - | - | 3 μA | - |
| Switching Frequency | - | - | up to 1.5 MHz | - |
Key Features
- Ultra-compact 5 mm x 5 mm PQFN copper-clip package with flip chip low-side MOSFET.
- High current handling: 50 A.
- 3-state 5 V PWM input gate driver for compatibility with a wide range of PWM controllers.
- Dynamic resistance mode for low-side drive to slow the low-side MOSFET during negative inductor current switching.
- Auto DCM (low-side gate turn off) using ZCD# input for improved light-load efficiency.
- Thermal warning (THWN#) and thermal shutdown (THDN) functions to prevent over-temperature conditions.
- HS-short detect fault# / shutdown and dual mode enable / fault# pin.
- Internal pull-up and pull-down for ZCD# and EN inputs, respectively.
- ON Semiconductor POWERTRENCH MOSFETs for clean voltage waveforms and reduced ringing.
- ON Semiconductor SyncFET™ technology (integrated Schottky diode) in low-side MOSFET.
- Integrated bootstrap Schottky diode.
- Optimized for switching frequencies up to 1.5 MHz.
- Low shutdown current: < 3 μA.
- Automotive qualified to AEC-Q100 (F085 version).
- Pb-free, halogen-free/BFR-free and RoHS compliant).
Applications
- Notebook, tablet PC, and ultrabook).
- Servers and workstations, V-core and non-V-core DC-DC converters).
- Desktop and all-in-one computers, V-core and non-V-core DC-DC converters).
- High-performance gaming motherboards).
- High-current DC-DC point-of-load converters).
- Networking and telecom microprocessor voltage regulators).
- Small form-factor voltage regulator modules).
- Automotive-qualified systems (F085 version)).
Q & A
- What is the maximum current handling of the FDMF5833-F085?
The FDMF5833-F085 can handle up to 50 A of current.
- What is the operating junction temperature range of the FDMF5833-F085?
The operating junction temperature range is from -40°C to +125°C.
- What is the UVLO threshold for the VCC rising?
The UVLO threshold for VCC rising is between 3.5 V and 4.1 V.
- What is the minimum controllable on-time for the PWM input?
The minimum controllable on-time for the PWM input is 30 ns.
- What is the shutdown current of the FDMF5833-F085?
The shutdown current is less than 3 μA.
- What is the maximum switching frequency supported by the FDMF5833-F085?
The module supports switching frequencies up to 1.5 MHz.
- Does the FDMF5833-F085 have thermal protection features?
Yes, it includes thermal warning (THWN#) and thermal shutdown (THDN) functions.
- Is the FDMF5833-F085 automotive qualified?
Yes, the F085 version is automotive qualified to AEC-Q100.
- What kind of packaging does the FDMF5833-F085 use?
The module uses an ultra-compact 5 mm x 5 mm PQFN copper-clip package.
- Is the FDMF5833-F085 RoHS compliant?
Yes, it is Pb-free, halogen-free/BFR-free and RoHS compliant.
