NJU7600RB1-TE1 Nisshinbo

NJU7600 PWM control Step-Up / Flyback switching regulator IC GENERAL DESCRIPTION PACKAGE OUTLINE The NJU7600 is a low voltage operation high-speed switching regulator control IC for PWM control step-up and fly-back converter. It incorporates a totem pole driver output, which can directly drive an external MOS-FET easily. The NJU7600 also has a soft-start NJU7600M NJU7600RB1 function, dead time control and timer latch for short circuit protection (DMP8) (MSOP8 (TVSP8)) and their times are all adjustable with external parts. It is available in 8-lead DMP, MSOP (TVSP) packages and 10-lead MSOP (TVSP) package. It is suitable for battery powered applications. NJU7600RB2 (MSOP10(TVSP10)) FEATURES PRODUCT VARIATION PWM switching control NJU7601 NJU7602 Operating Voltage 2.2V to 8V PWM/PFM Standby Function Light Load to Wide Oscillator Range 300kHz to 1MHz Efficiency Maximum Duty Cycle 90% typ. Over Current Protection Quiescent Current 800A typ. NJU7600 NJU7610 Soft-Start Function Internal : 16ms typ. or adjustable Constant Current Control Dead Time Control PWM Control Timer Latch for Short Circuit Protection NJU7620 C-MOS Technology Package Outline NJU7600M : DMP8 NJU7600RB1 : MSOP8 (TVSP8)* NJU7600RB2 : MSOP10 (TVSP10)* *MEET JEDEC MO-187-DA / THIN TYPE PIN CONFIGURATION PIN FUNCTION PIN FUNCTION + + 1 8 1 10 1. V 1. V 2. N.C. 2. FB 2 9 2 7 3. FB 3. IN 3 8 4. IN 4. SCP 3 6 4 7 5. SCP 5. DTC 6. DTC 6. RT 4 5 5 6 7. RT 7. GND 8. GND NJU7600M 8. OUT NJU7600RB2 9. GND NJU7600RB1 10. OUT Ver.2012-08-03 - 1 - NJU7600 BLOCK DIAGRAM + V FB NJU7600M ERAMP 0.8V NJU7600RB1 IN- 0.2V 1V Vref Soft Start UVLO Latch PWM Buffer OUT 2A SCP SCP OSC 2k 0.74V 0.5V 0.5 A RT 1V 1V DTC RT GND R T + V FB NJU7600RB2 ERAMP 0.8V IN- 0.2V 1V Vref Soft Start UVLO Latch PWM Buffer OUT 2uA SCP SCP OSC 2k 0.74V 0.5V 0.5 A N.C. R T 1V 1V DTC RT GND GND RT Ver.2012-08-03 - 2 -