NCP1593: Synchronous Buck Regulator, 1 MHz, 3.0 A
The NCP1593 is a fixed 1 MHz, high output current, synchronous PWM converter that integrates a low-resistance, high-side P-channel MOSFET and a low-side N-channel MOSFET. The NCP1593 utilizes internally compensated current mode control to provide good transient response, ease of implementation and excellent loop stability. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.6 V and is able to supply up to 3 A of load current. The NCP1593 includes an internally fixed switching frequency (FSW), and an internal soft-start to limit inrush current. Other features include cycle-by-cycle current limiting, 100% duty cycle operation, short- circuit protection, power saving mode and thermal shutdown.
Features- Wide Input Voltage Range: from 4.0 V to 5.5 V
- Internal 90 mΩ High-Side P-Channel MOSFET and 70 mΩ Low-Side N-Channel MOSFET
- Fixed 1 MHz Switching Frequency
- Cycle-by-Cycle Current Limiting
- Hiccup Mode Short-Circuit Protection
- Overtemperature Protection
- Internal Fixed SoftStart with External Adjustment
- Start-up with Pre-Biased Output Load
- Adjustable Output Voltage Down to 0.6 V
- Auto Power Saving Mode During Light Load
- 100% Duty Cycle Operation
| Benefits- Ability to run from various input voltage sources
- High efficiency and good thermal performance
- Small output inductor/capacitor and low ouptut ripple voltage
- Protection feature
- Protection feature
- Protection feature
- Ability to reduce external components with fixed internal SS time or adjust externally
- Protection feature
- Ability to regulate low output voltages
- Increased efficiency at light load
- Extends battery life
|
Applications | End Products- DVD Drives and HDD
- Notebook Computing
- Set-Top-Box (STB)
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Data Sheets (1)
Evaluation Board Documents (8)
Package Drawings (1)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| NCP1593AGEVB | Active | Pb-free | 3 A Synchronous Buck Regulator Evaluation Board |
| NCP1593BGEVB | Active | Pb-free | 3 A Synchronous Buck Regulator Evaluation Board |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP1593AMNTWG | Active | Pb-free
Halide free | DFN-10 | 485C | 1 | Tape and Reel | 3000 | $0.25 |
| NCP1593BMNTWG | Active | Pb-free
Halide free | DFN-10 | 485C | 1 | Tape and Reel | 3000 | $0.25 |
Specifications
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| NCP1593AMNTWG | Step-Down | Current Mode | 4 | 5.5 | 0.6 to 5.0 | 3 | 90 | 1000 |
| NCP1593BMNTWG | Step-Down | Current Mode | 4 | 5.5 | 0.6 to 5.0 | 3 | 90 | 1000 |
