Nisshinbo NJW4175 Switching Regulator ICs
Nisshinbo NJW4175 Switching Regulator ICs are high-speed oscillating frequency buck converters with a 40V/600mA MOSFET. The NJW4175 has PWM/PFM mode to ensure high efficiency at light load. The operating voltage range is wide, and the input range is from 3.4V to 40V. Moreover, a 100% maximum duty cycle maintains stable output voltage even if supply voltage drops. Internal protection functions: UVLO, over-current protection, and a thermal shutdown circuit can protect the circuit in abnormal conditions. The Nisshinbo NJW4175 has wide coverage in consumer electronics and industrial applications because of features that are a wide input range, fixed output voltage type, high switching oscillating frequency, and 100% maximum duty cycle.
Features
- Programmable 3.3V, 5V or adjustable output
- Only three external components are required (fixed output voltage type)
- Synchronous rectification
- High oscillating frequency (fixed 2.1MHz Typ.)
- External clock synchronization of 1.95MHz to 2.5MHz
- Efficiency improvement at light load (MODE pin selectable)
- Low quiescent current at sleep mode of 20µA Typ.
- Current mode control
- Wide operating voltage range of 3.4V to 40V
- Switching current of 0.85A min.
- PWM control
- Maximum duty cycle of 100%
- Built-in compensation circuit
- Correspond to the ceramic capacitor (MLCC)
- Soft start function (1ms Typ.)
- Undervoltage lockout (UVLO)
- Overcurrent protection (Hiccup type)
- Thermal shutdown
- Power Good function
- Standby function
- HSOP8-M1 package
Applications
- Power supply for camera
- Low-power buck converter
- Industrial equipment
Block Diagram
Published: 2024-04-29
| Updated: 2024-05-24