NJW4722 Series
MOSFET Drive Switching Regulator with Integrated Load-Switch Function for Boost/Fly-Back Converters
NJW4722 Series
MOSFET Drive Switching Regulator with Integrated Load-Switch Function for Boost/Fly-Back Converters
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Description
The NJW4722 is a boost/flyback switching regulator IC fabricated using a BCD process and designed to operate over a supply voltage range of 6 V to 25 V. It integrates a dedicated driver optimized for efficient driving of an Nch MOSFET, enabling high-current output applications. The device features pulse-by-pulse overcurrent detection to limit switching current under overload conditions. With an integrated load-switch function, it can block current to the load during short-circuit detection or latch-mode operation. In addition, the undervoltage lockout threshold can be configured using external resistors.
Applications
- Automotive
- Power Control Unit
Spec
| Automotive | |
|---|---|
| Input Voltage Range | 6 V to 25 V (45 V) |
| Operating Temperature Range | -40°C to 125°C |
| Supply Current | Typ. 2000 µA |
| Output Voltage Range | 6 V to - V |
| Output Voltage Accuracy | ±1.5% |
| Oscillator Frequency | 100 kHz to 600 kHz |
| Package | SSOP16-B3 |
| Control | Current Mode Control / PWM Control |
| Functions | Load-Switch Function Soft-Start Function: Adjustable with an external capacitor Overvoltage Protection Overcurrent Protection (Pulse-by-Pulse) Short-circuit Protection FB Pin Short-to-GND Overvoltage Protection |
Protections / Functions
| TSD | 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 |
|---|---|
| OCP | Overcurrent Protection Note: The function previously labeled as "ILX (LX Current Limit Function)" is now shown as "OCP." |
| 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 |
|---|---|---|---|---|
| NJW4722VB3-Z |
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SSOP16-B3 | See datasheet | - |
- 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
NJW4722 Series