NJU7600
www.DataSheet4U.com
PWM control Step-Up / Flyback switching regulator IC
■PACKAGE OUTLINE
■GENERAL DESCRIPTION...
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...
