NJW4155 Series
Current Mode Control Internal 1.8A MOSFET Switching Regulator IC for Buck Converter
NJW4155 Series
Current Mode Control Internal 1.8A MOSFET Switching Regulator IC for Buck Converter
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Description
The NJW4155 is a buck converter with 40V/1.8A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.5V to 40V. Therefore, the NJW4155 can realize downsizing of applications with a few external parts so that adopts current mode control. Also, it has a soft start function, external clock synchronization, over current protection and thermal shutdown circuit. It is suitable for supplying power to a Car Accessory, Office 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. 3500 µA |
| Standby Current | 3 (max.) µA |
| Output Voltage Range | 0.8 V to 36.8 V |
| Output Voltage Accuracy | ± 1 % |
| Output Current | 1800 mA |
| Oscillator Frequency | 450kHz typ.(A, D ver.) 300kHz typ.(B ver.) |
| Package | HSOP8-M1 TO-252-5-L3 |
| Control | Current Mode Control / PWM Control |
| Function | Standby Function Soft Start Function (4ms typ.) Over Current Protection (Hiccup type) Thermal Shutdown Protection Power Good Function (NJW4155GM1 only) |
| 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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SPICE model download
You can download the product's SPICE model. Login/registration to myNISD is required to download.
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Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NJW4155GM1 |
|
HSOP8-M1 | - | NJW-1-s-r |
| NJW4155DL3 |
|
TO-252-5-L3 | - | NJW-1-s-fr |
- 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
NJW4155 Series