NJW4201 Series

Oscillator with Spread Spectrum Frequency Modulation for Switching Regulator

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Description

NJW4201 is a high precision oscillator IC with spread spectrum frequency modulation (SSFM) made for switching regulator. The output of a clock with spread spectrum frequency modulation reduces the peak level of electromagnetic radiation. The NJW4201 SSFM function changes ±5% max of center frequency, and is modulated with a linear signal. The modulation rate can be selected from A1 version: f_OSC/512, f_OSC/128, A2 version: f_OSC/2048, f_OSC/512. The NJW4201 oscillator operates at an oscillation frequency from 280kHz to 2.4MHz, and outputs an anti-phase clock through two output pins. Therefore, it is suitable for the external synchronization signal application of the switching regulator.

Spec

	Consumer
Supply Voltage	2.7V to 5.5V
Frequency Range	280kHz to 2400kHz
Frequency Spreading	±5%
Number of Outputs	2
Structure	Bi-CMOS Technology
Wide Operating Temperature	-40℃ to +125℃
Junction Temp.	+150℃
Package	DFN8-U1(ESON8-U1) SOT-23-6-1
Anti-phase outputs to reduce ripple current	0° , 180°
Selectable modulation rates	A1 version: f_OSC/512,f_OSC/128, No effect A2 version: f_OSC/2048,f_OSC/512, No effect
Note	High precision frequency SSFM for improved EMI performance ±5% max., 128 steps linear frequency spreading Undervoltage lockout (UVLO) Standby function

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Quality &
Packages

Product Name	Package	Marking	Reliability
NJW4201KU1-A1	ESON8-U1	-	NJW-1-s-r
NJW4201F1-A1	SOT-23-6-1	-	NJW-1-s-fr
NJW4201F1-A2	SOT-23-6-1	-	NJW-1-s-fr

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.