 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
NCP1601A Datasheet(PDF) 3 Page - ON Semiconductor |
|
||||||||||||||||||||||||||||||
NCP1601A Datasheet(HTML) 3 Page - ON Semiconductor |
|
|
3 / 18 page 
NCP1601A, NCP1601B http://onsemi.com 3 PIN FUNCTION DESCRIPTION Pin Symbol Function Function 1 FB Feedback / Shutdown This pin receives a current IFB which is proportional to the PFC circuit output voltage. The current is for the output regulation, output Overvoltage Protection (OVP), and output undervoltage protection (UVP). When IFB goes above 107% Iref, OVP is activated and the Drive Output is disabled. When IFB goes below 8% Iref, the device enters a low−current consumption shutdown mode. 2 Vcontrol Control The voltage of this pin Vcontrol directly controls the input impedance and hence the power factor of the circuit. This pin is connected to an external capacitor to limit the control voltage Vcontrol band- width typically below 20 Hz to achieve Power Factor Correction. 3 Ramp Ramp This pin is connected to an external capacitor to set a ramp signal. The capacitor value directly affects the input impedance of the PFC circuit and hence the maximum input power. 4 CS Current Sense This pin sources a current IS which depends on the inductor current and an offset voltage. The current is for Overcurrent Protection (OCP) and zero current detection. When IS is above 200 mA, OCP is activated and the Drive Output is disabled. When IS is below 14 mA, the circuit detects a zero current. This information is used by the on−time modulation arrangement and by the oscillator block. 5 Osc Oscillator / Synchronization In oscillator mode, this pin is connected to an external capacitor to set the oscillator frequency of the DCM operation. In synchronization mode, this pin is connected to an external driving signal. The positive edge of the drive output is synchronized to the negative edge of the external signal in DCM operation. If the inductor current is non−zero at the end of a switching period, the output drive is not allowed to turn on. CCM operation is prohibited. Instead, the circuit operates in CRM in this case. 6 GND The IC ground − 7 Drv Drive Output This pin provides an output to an external MOSFET. 8 VCC Supply Voltage This pin is the positive supply of the device. The operating range is between 9 V and 18 V with UVLO start threshold 13.75 V for NCP1601A and 10.5 V for NCP1601B. MAXIMUM RATINGS Rating Symbol Value Unit FB, Vcontrol, Ramp, CS, Osc Pins (Pins 1−5) Maximum Voltage Range Maximum Current Vmax Imax −0.3 to +9 100 V mA Drive Output (Pin 7) Maximum Voltage Range Maximum Current Range (Note 2) Vmax Imax −0.3 to +18 −500 to +750 V mA Power Supply Voltage (Pin 8) Maximum Voltage Range Maximum Current Vmax Imax −0.3 to +18 100 V mA Power Dissipation and Thermal Characteristics P suffix, Plastic Package, Case 626 Maximum Power Dissipation @ TA=70 °C Thermal Resistance, Junction−to−Air D suffix, Plastic Package, Case 751 Maximum Power Dissipation @ TA=70 °C Thermal Resistance, Junction−to−Air PD RqJA PD RqJA 800 100 450 178 mW °C/W mW °C/W Operating Junction Temperature Range TJ −40 to +125 °C Storage Temperature Range Tstg −65 to +150 °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. A. This device series contains ESD protection and exceeds the following tests: Pins 1−8: Human Body Model 2000 V per MIL−STD−883, Method 3015. Machine Model Method 200 V. B. This device contains Latchup protection and exceeds ±100 mA per JEDEC Standard JESD78. 1. Guaranteed by design. |
English ▼
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
