NJW4175 Series
2.1MHz, 600mA MOSFET Switching Regulator IC for Synchronous Buck Converter
Download Datasheet
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Description
The NJW4175 is a high speed oscillating frequency buck converter with 40V/600mA MOSFET. The NJW4175 have PWM/PFM mode to ensure high efficiency at light load. Operating voltage range is wide input range from 3.4V to 40V. Moreover, 100% maximum duty cycle contribute to maintain stable output voltage even if supply voltage drops. Internal protection functions: UVLO, an over current protection and a thermal shutdown circuit can protect circuit when abnormal condition. The NJW4175 has wide coverage in consumer electronics and industrial application, because of features that are wide input range, fixed output voltage type, high switching oscillating frequency and 100% maximum duty cycle.
Applications
- Power supply for camera
- Low power buck converter
- Industrial equipment
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Spec
Consumer Input Voltage Range 3.4 V to 40 V (45 V) Operating Temperature Range -40°C to 125°C Supply Current Typ. 500 µA Standby Current 3 (max.) µA Output Voltage Range 0.8 V to 26 V Output Voltage Accuracy ± 1 % Output Current 600 mA Oscillator Frequency Typ. 2.1MHz Maximum Duty Cycle 100% Package HSOP8-M1 制御 Current Mode Control / PWM Control 機能 Standby Function
Soft Start Function 4ms typ.
Over Current Protection (Hiccup type)
Thermal Shutdown Protection
Power Good Function備考 Built-in Compensation Circuit
UVLO (Under Voltage Lockout)
Correspond to Ceramic Capacitor (MLCC)Protections / Functions
TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust 
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Technical
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Related Links
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Quality &
Packages- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
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Sample / Buy
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Buy Online
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Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
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Download Datasheet
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| ILX | LX Current Limit Function |
| OCP | Overcurrent Protection |
| OVP | Overvoltage Protection |
| UVLO | Undervoltage Lockout Protection |
| OVLO | Overvoltage Lockout Protection |
| Reverse | Reverse Current Protection Circuit |
| Shutdown | Shutdown Function |
| Soft Start | Soft Start Function |
| SSCG | Spread Spectrum Clock Generator Function |
| PGOOD | Power Good Output |
| Auto Discharge | Auto Discharge Function |
| Anti-ringing | Anti-ringing Switch Function |
| Sequencing | Start-up Sequencing Control |
| Max Duty | Maximum Duty Cycle |
| Ext. Phase | Externally Adjustable Phase Compensation |
| LED Adjust | LED High-speed Dimming Control |