NCV891130: 1.2 A, 2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive
The NCV891130 is a Dual Mode regulator intended for Automotive, battery-connected applications that must operate with up to a 45V input supply. Depending on the output load, it operates either as a PWM Buck Converter or as a Low Drop-Out Linear Regulator, and is suitable for systems with low noise and Low Quiescent Current requirements often encountered in automotive driver information systems. A reset pin (with fixed delay) simplifies interfacing with a microcontroller.
The NCV891130 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 an all-ceramic output filter capacitor – forming a space-efficient switching regulator solution
Features- 30 µA Iq in Light Load Condition
- 1.2 A maximum output current in PWM mode
- Internal N-channel Power Switch
- VIN operating range 3.7 V to 36.5 V
- Logic level Enable pin can be tied to battery
- Fixed Output Voltage of 5.0 V, 4.0 V or 3.3 V
- 2 MHz Free-running Switching Frequency
- NCV Prefix for Automotive Requiring Site and Control Changes
- Withstands Load Dump to 45 V
- +/-2 % Output Voltage Accuracy
| Benefits- Low Iq linear mode at light load
- Efficient switching mode up to 1.2 A
- No external Mosfet needed
- Designed to run on car battery
- Versatile EN pin
- Simplified design
- Smaller inductor and capacitors, faster response, smaller ripple
- PPAP available
|
Applications- Radio
- Infotainment
- Instrument clusters
- Telematics
- Safety - Vision Systems
| End Products |
Design & Development Tools (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| SOIC-8 EP | 751AC (33.6kB) | B |
Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCV891130PD33R2G | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SOIC-8 EP | 751AC | 2 | Tape and Reel | 2500 | $2.4999 |
| NCV891130PD40R2G | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SOIC-8 EP | 751AC | 2 | Tape and Reel | 2500 | $2.4999 |
| NCV891130PD50R2G | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SOIC-8 EP | 751AC | 2 | Tape and Reel | 2500 | $2.4999 |
Specifications
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| NCV891130PD33R2G | Step-Down | Current Mode | 3.7 | 45 | 3.3 | 1.2 | 85 | 2000 |
| NCV891130PD40R2G | Step-Down | Current Mode | 3.7 | 45 | 4 | 1.2 | 85 | 2000 |
| NCV891130PD50R2G | Step-Down | Current Mode | 3.7 | 45 | 5 | 1.2 | 85 | 2000 |
