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NJW4160 Dataheets PDF



Part Number NJW4160
Manufacturers New Japan Radio
Logo New Japan Radio
Description Switching Regulator IC
Datasheet NJW4160 DatasheetNJW4160 Datasheet (PDF)

NJW4160 Switching Regulator IC for Buck Converter External MOSFET driving GENERAL DESCRIPTION The NJW4160 is a MOSFET Drive switching regulator IC for Buck Converter that operates wide input range from 3.0V to 35V. It can provide large current application because of built-in highly effective Pch MOSFET drive circuit. Built-in pulse-by-pulse current detecting type over current protection limits the output current at over load. It is suitable for logic voltage generation from high voltage that C.

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NJW4160 Switching Regulator IC for Buck Converter External MOSFET driving GENERAL DESCRIPTION The NJW4160 is a MOSFET Drive switching regulator IC for Buck Converter that operates wide input range from 3.0V to 35V. It can provide large current application because of built-in highly effective Pch MOSFET drive circuit. Built-in pulse-by-pulse current detecting type over current protection limits the output current at over load. It is suitable for logic voltage generation from high voltage that Car Accessory, Office Automation Equipment, Industrial Instrument and so on. ■ PACKAGE OUTLINE NJW4160R (MSOP8(VSP8)) NJW4160M (DMP8) FEATURES Pch MOSFET Driving Wide Operating Voltage Range PWM Control Wide Oscillating Frequency Over Current Protection UVLO (Under Voltage Lockout) Standby Function Package Outline Driving Voltage V+-5.35V(typ.) 3V to 35V 50kHz to 1MHz NJW4160M: DMP8 NJW4160R: MSOP8(VSP8) *MEETJEDEC MO-187-DA PIN CONFIGURATION 1 2 3 4 NJW4160R NJW4160M 8 7 6 5 PIN FUNCTION 1. OUT 2. SI 3. V+ 4. EN 5. IN6. FB 7. CT 8. GND Ver.2014-04-01 -1- NJW4160 BLOCK DIAGRAM V+ SI ON/OFF EN Enable Control VIPK Low Frequency Control OSC Pulse by Pulse 5V Reg. Driver OUT Vref 0.8V Error AMP PWM Comparator IN- FB CT GND ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Supply Voltage OUT pin Voltage EN pin sink Current IN- pin Voltage CT pin Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL V+ VOUT IEN VINVCT PD Topr Tstg MAXIMUM RATINGS +40 V+-6 to V+ 500 +6 +6 (*1) MSOP8(VSP8) : 595 (*2) DMP8: 530 (*2) -40 to +85 -40 to +150 UNIT V V A V V mW C C (*1): When Supply voltage is less than +6V, the absolute maximum voltage is equal to the Supply voltage. (*2): Mounted on glass epoxy board based on EIA/JEDEC. (76.2 114.3 1.6mm: 2-Layers) RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Timing Capacitor Oscillating Frequency SYMBOL V+ CT fOSC MIN. 3 120 50 TYP. MAX. UNIT – 35 V – 3,300 pF – 1,000 kHz -2- Ver.2014-04-01 NJW4160 ELECTRICAL CHARACTERISTICS (Unless otherwise noted, V+=12V, VEN is connected to V+ via 200k pull-up, CT=470pF, Ta=25 C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Oscillator Block Oscillation Frequency Charge Current Discharge Current Voltage amplitude Frequency Supply Voltage Deviation Frequency Temperature Deviation Oscillation Frequency (Low Frequency Control) fOSC Ichg Idis VOSC fDV CT=470pF V+=3V to 35V fDT Ta=-40 C to +85 C fOSC_LOW VIN-=0.3V, VFB=0.7V Error Amplifier Block Reference Voltage Input Bias Current Open Loop Gain Gain Bandwidth Output Source Current Output Sink Current VB IB AV GB IOM+ VFB=1V, VIN-=0.7V IOM- VFB=1V, VIN-=0.9V PWM Comparate Block Input Threshold Voltage (FB pin) Maximum Duty Cycle VT_0 VT_50 MAXDUTY Duty=0%, VIN-=0.6V Duty=50%, VIN-=0.6V VFB=1.2V Current Limit Detection Block Current Limit Detection Voltage Delay Time Output Block Output High Level ON Resistance Output Low Level ON Resistanc.


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