NCP3133A: 3 A Integrated Synchronous Buck Converter
NCP3133A is a fully integrated synchronous buck converter for 3.3 V and 5 V step−down applications. It can provide up to 3 A load current. NCP3133A supports high efficiency, fast transient response and provides power good indicator. The control scheme includes two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can smoothly switch between CCM and DCM, where converter runs at reduced switching frequency with much higher efficiency.
Features- High Efficiency in both CCM and DCM
- Support MLCC Output Capacitor
- High Operation Frequency at 1.1 MHz
- Small Footprint, 3 mm x 3 mm, 16−pin QFN Package
- Up to 3 A Continuous Output Current
- 2.9 V to 5.5 V Wide Conversion Voltage Range
- Output Voltage Range from 0.6 V to 0.84 X Vin
- Internal 400 µs Soft−Start
- Automatic Power−Saving Mode
- Voltage Mode Control
- Support Pre-bias Start−up Functionality
- Output Discharge Operation
- Over−Temperature Protection
- Built−in Over−Voltage, Under−Voltage and Over-Current Protection
- Power Good Indicator
| Benefits- Perfromance
- Lower system cost
|
Applications- 5 V Step Down Rail
- 3.3 V Step Down Rail
| End Products- Servers
- Desktop and notebook computers
- Networking Systems
|
Data Sheets (1)
Package Drawings (1)
Evaluation Board Documents (4)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| NCP3133AGEVB | Active | Pb-free | 3A Integrated Synchronous Buck Converter Evaluation Board |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP3133AMNTXG | Active | Pb-free
Halide free | QFN-16 | 485DA | 1 | Tape and Reel | 3000 | $0.47 |
Specifications
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| NCP3133AMNTXG | Step-Down | Voltage Mode | 2.9 | 5.5 | 1.2 | 3 | 91 | 1000 |
