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NJU7610

JRC
Part Number NJU7610
Manufacturer JRC
Description Step-Up / Flyback switching regulator IC
Published Jun 12, 2009
Detailed Description NJU7610 Step-Up / Flyback switching regulator IC with Over Current Protection ■GENERAL DESCRIPTION The NJU7610 is a lo...
Datasheet PDF File NJU7610 PDF File

NJU7610
NJU7610

Overview
NJU7610 Step-Up / Flyback switching regulator IC with Over Current Protection ■GENERAL DESCRIPTION The NJU7610 is a low voltage operation high-speed switching regulator control IC for step-up and flyback converter, with a pulse-by-pulse over-current protection.
The pulse-by-pulse over-current protection circuit can limit the over current in switching operation.
It incorporates a totem pole output, which can drive an external MOS-FET easily.
It also has a soft-start function and dead time control and their times are all adjustable with external parts.
The NJU7610 is available in 8-lead DMP and MSOP (TVSP) packages.
■FEATURES ● PWM switching control ● Pulse-by-pulse over current protection ● Operating Voltage 2.
2V to 8V ● Wide Oscillator Range 300kHz to 1MHz ● Maximum Duty Cycle 90% typ.
● Quiescent Current ● Soft-Start Function 800µA typ.
Internal : 16ms typ.
or adjustable ● Dead Time Control ● C-MOS Technology ● Package Outline NJU7610M : DMP8 NJU7610RB1 : MSOP8 (TVSP8)* *MEET JEDEC MO-187-DA / THIN TYPE ■PACKAGE OUTLINE NJU7610M (DMP8) NJU7610RB1 (MSOP8 (TVSP8)) ■PRODUCT VARIATION NJU7620 Constant Current Control NJU7610 Over Current Protection NJU7600 PWM Control ■PIN CONFIGURATION 1 2 3 4 NJU7610M NJU7610RB1 8 7 6 5 PIN FUNCTION 1.
V+ 2.
FB 3.
IN 4.
SENSE 5.
DTC 6.
RT 7.
GND 8.
OUT Ver.
2012-08-03 -1- NJU7610 ■BLOCK DIAGRAM V+ FB IN- 1V Vref ER⋅AMP UVLO Soft Start SENSE Blanking OUT OCP 0.
2V 0.
5 RT A OSC 0.
5V 0.
8V 0.
2V PW M Buffer OUT 0.
74V DTC RT RT GND -2- Ver.
2012-08-03 NJU7610 ■ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Output Pin Current Power Dissipation SYMBOL V+ IO PD Operating Temperature Range Storage Temperature Range TOPR TSTG MAXIMUM RATINGS +9 ±50 DMP8 : 300 MSOP8 (TVSP8) : 320 -40 to +85 -40 to +125 (Ta=25°C) UNIT V mA mW °C °C ■RECOMMENDED OPERATING CONDITIONS PARAMETER Operating Voltage Oscillator Timing Resistor Oscillation Frequency SYMBOL V+ RT fOSC MIN.
2.
2 30 300 (Ta=25°C)...


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