NJW4161 Series

MOSFET Drive Switching Regulator IC for Buck Converter

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Description

The NJW4161 is a MOSFET Drive switching regulator IC for Buck Converter that operates wide input range from 3.1V to 40V. It can provide large current application because of built-in highly effective Pch MOSFET 10V drive circuit. There are two types, Hiccup type and Latch type, of over current protection version. It is suitable for logic voltage generation from high voltage that Car Accessory, Office Automation Equipment, Industrial Instrument and so on.

Spec

	Consumer
Input Voltage Range	3.1 V to 40 V (45 V)
Operating Temperature Range	-40°C to 125°C
Supply Current	Typ. 1500 µA
Standby Current	2 µA
Output Voltage Range	0.8 V to 38 V
Output Voltage Accuracy	± 1 %
Oscillator Frequency	50kHz to 1MHz
Maximum Duty Cycle	100%
Package	MSOP8(VSP8) DIP8
Control	PWM Control (Automatic PWM/PFM Control improves power efficiency at light load. (C ver.))
Function	Standby Function Soft Start Function (15ms (typ.)) Over Current Protection (Hiccup type (A, C ver.)Latch type (B ver.)) UVLO (Under Voltage Lockout)
Note	Thermal Shutdown Protection

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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	Compatibility	Package	Marking	Reliability
NJW4161R		MSOP8(VSP8)	-	NJW-1-s-fr
NJW4161D		DIP8	-	NJW-t

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.

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