NJW4140 Series

MOSFET Drive Switching Regulator IC for Boost / Fly-back Converter

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Description

The NJW4140 is a MOSFET Drive switching regulator IC for Boost / Fly-back Converter that operates wide input range from 3V to 40V. It can provide large current application because of built-in highly effective Nch 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 boost/fly-back application such as Car Accessory, Office Automation Equipment, Industrial Instrument and so on.

Spec

	Consumer	Automotive
Input Voltage Range	3 V to 40 V (45 V)
Operating Temperature Range	-40°C to 85°C	-40°C to 125°C
Supply Current	Typ. 1400 µA	Max. 2000 µA
Standby Current	2.5 µA	12 (max.) µA
Output Voltage Range	3 V to - V
Output Voltage Accuracy	± 1 %	± 2 %
Oscillator Frequency	40kHz to 1MHz
Package	DMP8 MSOP8(VSP8)	MSOP8(VSP8)
Control	PWM Control
Function	Standby Function Over Current Protection
Note	UVLO (Under Voltage Lockout)

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TSD	ILX	OCP	OVP	UVLO	OVLO	Reverse	Shutdown	Soft Start	SSCG	PGOOD	Auto Discharge	Anti-ringing	Sequencing	Max Duty	Ext. Phase	LED Adjust

Functional Description

Quality &
Packages

Product Name	Package	Marking	Reliability
NJW4140M	DMP8	-	-
NJW4140R	MSOP8(VSP8)	-	-
NJW4140R-T1	MSOP8(VSP8)	-	-
NJW4140R-Z2	MSOP8(VSP8)	-	-

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

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