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NJU7600

New Japan Radio
Part Number NJU7600
Manufacturer New Japan Radio
Description PWM control Step-Up / Flyback switching regulator
Published Feb 18, 2009
Detailed Description NJU7600 www.DataSheet4U.com PWM control Step-Up / Flyback switching regulator IC ■PACKAGE OUTLINE ■GENERAL DESCRIPTION...
Datasheet PDF File NJU7600 PDF File

NJU7600
NJU7600

Overview
NJU7600 www.
DataSheet4U.
com PWM control Step-Up / Flyback switching regulator IC ■PACKAGE OUTLINE ■GENERAL DESCRIPTION NJU7600 is a high speed low voltage operation switching regulator control IC.
It features a totem pole driver that can directly drive an external MOS-FET.
Internal soft-start function, Dead time control and timer latch function are included, requiring no external components.
All parameters can be optimized by additional external components for design flexibility.
NJU7600M NJU7600RB1 ■FEATURES ● PWM switching control ● Operating Voltage 2.
2V to 8V ● Wide Oscillator Range 300kHz to 1MHz ● Maximum Duty Cycle 90% typ.
● Quiescent Current 800µA typ.
● Soft-Start Function Internal : 16ms typ.
or adjustable ● Dead Time Control ● Timer Latch for Short Circuit Protection ● C-MOS Technology ● Package Outline NJU7600M : DMP8 NJU7600RB1 : TVSP8 ■PRODUCT VARIATION NJU7601* PWM/PFM Light Load to Efficiency NJU7602* Standby Function Over Current Protection NJU7600 PWM Control NJU7610* * Under Development ■PIN CONFIGURATION 1 2 3 4 8 7 6 5 NJU7600M NJU7600RB1 PIN FUNCTION 1.
V+ 2.
FB 3.
IN4.
SCP 5.
DTC 6.
RT 7.
GND 8.
OUT Ver.
2005-03-01 -1- NJU7600 www.
DataSheet4U.
com ■BLOCK DIAGRAM V FB + ER⋅AMP 0.
8V IN1V Vref 0.
2V Soft Start UVLO Latch PWM SCP 2uA SCP OSC 2kΩ 0.
5 A RT 0.
5V 0.
74V Buffer OUT 1V 1V DTC RT GND -2- Ver.
2005-03-01 NJU7600 www.
DataSheet4U.
com ■ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL Supply Voltage V+ Output Pin Current IO Power Dissipation PD Operating Temperature Range Storage Temperature Range TOPR TSTG MAXIMUM RATINGS +9 ±50 DMP8 :300 TVSP8 :320 -40 ~ +85 -40 ~ +125 UNIT V mA mW °C °C ■RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER SYMBOL MIN.
Operating Voltage V+ 2.
2 Oscillator Timing Resistor RT 30 Oscillation Frequency fOSC 300 TYP.
– 47 700 MAX.
8 120 1,000 UNIT V kΩ kHz ■ELECTRICAL CHARACTERISTICS (V+=3.
3V, RT=47kΩ, Ta=25°C) PARAMETER Under Voltage Lockout Block ON Threshold Voltage OFF...


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