NJW4128 Series
Switching Regulator IC for Buck Converter Current Mode Control with 40V/2.5A MOSFET
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Description
The NJW4128 is a buck converter with 40V/2.5A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.5V to 40V.Therefore, the NJW4128 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.
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Spec
Consumer Automotive Input Voltage Range 4.5 V to 40 V (45 V) Operating Temperature Range -40°C to 85°C -40°C to 125°C Supply Current Typ. 4000 µA Standby Current 3 (max.) µA Output Voltage Range 0.8 V to 35.2 V Output Voltage Accuracy ± 1 % Output Current 2500 mA Oscillator Frequency 450kHz typ.(A ver.), 300kHz typ.(B ver. 450kHz typ. Package HSOP8-M1 Control Current Mode Control / PWM Control Function Standby Function
Soft Start Function (4ms typ.)
Over Current Protection (Hiccup type)
Thermal Shutdown Protection
Power Good FunctionNote UVLO (Under Voltage Lockout)
Built-in Compensation Circuit
External Clock Synchronization
Correspond to Ceramic Capacitor (MLCC)If you need datasheets of this
product, please contact us.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 -
Technical
Documents-
SPICE model download
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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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Authorized Distributors
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Download Datasheet
Functional Description
TSD | Thermal Shutdown Function |
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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 |