NJW4170 Series
Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter
NJW4170 Series
Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter
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Description
The NJW4170 is a high speed oscillating frequency buck converter with 40V/1A MOSFET. Current mode control and built-in phase compensation circuit minimize external parts and contribute to using a Low ESR Output Capacitor(MLCC) within wide input range from 4.5V to 40V. Therefore, the NJW4170 can realize downsizing of applications. Also, it has a soft start function, an external clock synchronization function, an over current protection and a thermal shutdown circuit. Over 2MHz of Switching frequency can avoid interference with the AM radio frequency. It is suitable for supplying power to a Car Accessory, Audio Automation Equipment, Industrial Instrument and so on.
Spec
| Standard | |
|---|---|
| Input Voltage Range | 4.5 V to 40 V (45 V) |
| Operating Temperature Range | -40°C to 125°C |
| Supply Current | Typ. 2000 µA |
| Standby Current | 1 (max.) µA |
| Output Voltage Range | 0.8 V to 31 V |
| Output Voltage Accuracy | ± 1 % |
| Output Current | 1000 mA |
| Oscillator Frequency | 2.4MHz typ. (A ver.)2.1MHz typ. (B ver.) |
| Package | SOT-89-5-2 DFN8-V1(ESON8-V1) |
| Control | Current mode Control / PWM Control |
| Function | Standby Function Soft Start Function (4ms typ.) Over Current Protection (Hiccup type) Thermal Shutdown Protection |
| Note | Built-in Compensation Circuit UVLO (Under Voltage Lockout) External Clock Synchronization 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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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 |
Technical Documents
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Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NJW4170U2-A |
|
SOT-89-5-2 | - | NJW-1-s-fr |
| NJW4170U2-B |
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SOT-89-5-2 | - | NJW-1-s-fr |
| NJW4170KV1-A |
|
DFN8-V1(ESON8-V1) | - | NJW-1-s-r |
- 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.
FAQ
Buy / Contact
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Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
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Available from 1 piece!Our electronic device products are available through our authorized online distributors.
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Technical Support
NJW4170 Series