NJU7601 Series

Step-Up/Flyback Switching Regulator IC with Power Saving PWM/PFM control

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Description

The NJU7601 is a low voltage operation high-speed switching regulator control IC for step-up and fly-back converter, with PWM/PFM switching control. It can improve a switching efficiency on light load with automatically changing between PWM and PFM controls, and incorporates a totem pole output, which can drive an external MOS-FET easily. The NJU7601 also has a soft-start function, dead time control and timer latch for short circuit protection and their times are all adjustable with external parts. It is available in 8-lead DMP and MSOP (TVSP) packages. It is suitable for battery powered applications.

Spec

	Consumer
Input Voltage Range	2.2 V to 8 V (9 V)
Operating Temperature Range	-40°C to 85°C
Supply Current	Typ. 800 µA
Output Voltage Range	2.2 V to - V
Output Voltage Accuracy	± 1.5 %
Oscillator Frequency	300kHz to 1MHz
Maximum Duty Cycle	90% typ.
Package	DMP8 MSOP8(TVSP8)
Control	Automatic PWM/PFM Control
Function	Soft-Start Function Internal (16ms typ. or adjustable) Timer Latch for Short Circuit Protection Dead Time Control

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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
NJU7601M		DMP8	-	NJU-1-s-fr
NJU7601RB1		MSOP8(TVSP8)	-	NJU-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.

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