NCV890430: Automotive 0.6 A 2 MHz 100% Duty Cycle Step-Down Synchronous Regulator
The NCV890430 is a fixed-frequency Synchronous Buck regulator
intended for Automotive, battery-connected applications that operate
with up to a 45 V input supply. It is suitable for automotive systems
requiring low noise and low shutdown currents that also need to
operate at low input voltage close to the output voltage. A reset pin
(with adjustable delay) simplifies interfacing with a microcontroller.
This part also features an enable input that can either be connected to a
low voltage (such as a micro-controller output) or high voltage (such
as the battery input), and a synchronization input.
The NCV890430 also provides several protection features expected
in automotive power supply systems such as current limit, short circuit
protection, and thermal shutdown. In addition, the high switching
frequency produces low output voltage ripple even when using small
inductor values and all-ceramic input output filter capacitors −
forming a space-efficient switching regulator solution.
Features- Internal 550 mΩ P Channel and 300 mΩ N-Channel Power Switches
- Capable of 100% Duty Cycle Operation
- VIN operating range of 3.5 V to 37 V
- Withstands Load Dump to 45 V
- 2 MHz Free-Running Switching Frequency
- Shutdown Current Less than 10 µA
- High Voltage Enable Pin
- Synchonization Input Pin
- Maximum DC Output Current of at least 0.6A
- Fixed Output Voltage (5.0 V, 3.3 V and 2.5 V Versions)
- ± 2% Output Voltage Accuracy
- DFN Package with Wettable Flanks (Pin Edge Plating Per JEDEC MO220)
- NCV Prefix for Automotive Requiring Site and Control Changes
- Pb-Free
|
Applications- Automotive Infotainment and Instrumentation
- Automotive Body Applications
- Linear Regulator Replacement
- Rear View Camera
| End Products |
Design & Development Tools (4)
Package Drawings (1)
Simulation Models (1)
| Document Title | Document ID/Size | Revision | Revision Date |
|---|
| NCV890430 PSPICE Model | NCV890430 PSPICE Model (185kB) | 2 | Jan, 2017 |
Evaluation Board Documents (10)
Data Sheets (1)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| NCV890430MW25GEVB | Active | Pb-free | 2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board |
| NCV890430MW33GEVB | Active | Pb-free | 2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board |
| NCV890430MW50GEVB | Active | Pb-free | 2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCV890430MW25TXG | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | DFN-8 | 506BY | 1 | Tape and Reel | 3000 | $1.6 |
| NCV890430MW33TXG | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | DFN-8 | 506BY | 1 | Tape and Reel | 3000 | $1.6 |
| NCV890430MW50TXG | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | DFN-8 | 506BY | 1 | Tape and Reel | 3000 | $1.6 |
Specifications
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| NCV890430MW25TXG | Step-Down | Current Mode | 3.5 | 45 | 2.5 | 0.6 | 83 | 2000 |
| NCV890430MW33TXG | Step-Down | Current Mode | 3.5 | 45 | 3.3 | 0.6 | 77 | 2000 |
| NCV890430MW50TXG | Step-Down | Current Mode | 3.5 | 45 | 5 | 0.6 | 74 | 2000 |
