NCP1594A: 2.9 V to 5.5 V, 4 A Integrated Synchronous DC-DC Step Down Converter Switches Up to 2MHz in a thermally enhanced 4x4 QFN package
The NCP1594A offers tremendous flexibility to allow for design optimization. The part enables the ability to optimize the size versus efficiency trade-off and the adjustability to meet various POL applications. Adjustable features include soft-start timing, switching frequency, output voltage, and mode of operation (fixed CCM mode or DCM/CCM operation).
Additional features include a REFIN input that allows for the use of an external reference, which can be used in DDR termination applications. Nine output voltages can be selected with two inputs or the part can be adjusted externally with two external resistors.
The NCP1594A is protected against overcurrent, undervoltage, and thermal fault conditions. The part is fully specified from -40C to 85C.
Features- Operation from 2.9 V to 5.5V
- 4 mm by 4 mm QFN package
- Adjustable frequency from 500 kHz to 2 MHz
- 9 Fixed output voltages or externally adjustable down to 0.6V
- Undervoltage, Overcurrent, and Overtemperature protection
- Adjustable soft-start
- Safe start up into prebias output
- External reference input
- Cycle by cycle overcurrent
- Adjustable switching frequency from 500kHz to 2MHz
- REFIN input
- Forced CCM and DCM/CCM
- Up to 4 A Output Current
| Benefits- Allows operation from 3.3V or 5V bus rails
- Exposed pad to enhance thermal dissipation
- Optimize trade-off in total size versus efficiency
- Saves external resistors and/or provides design flexibility
- Protect IC against faults
- Set timing for controlled output ramp up
- Prevents reverse current flow from output capacitor
- Allows for changes to the output and can be used in DDR termination applications
- Protect against overcurrent conditions
- Optimize design in terms of size and efficiency
- Allows for use in DDR termination applications
- Allows fixed frequency operation for noise sensitive applications or skip mode for improved efficiency at light loads
|
Applications- 3.3 V and 5 V bus rail point of loads
- DDR termination
| End Products- Telecom and networking
- Base stations
- solid state drives
- Storage devices (SSD and Tape drives)
- Server
- DDR memory termination
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Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP1594AMNTXG | Active | Pb-free
Halide free | WQFN24 4x4, 0.5P (Custom for Huawei) | Contact BDTIC | 1 | Tape and Reel | 4000 | $1.3333 |
Specifications
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| NCP1594AMNTXG | Step-Down | Voltage Mode | 2.9V | 6V | 0.6V to 5V | 4A | 95% | 500kHz to 2MHz |
