NCP1601AP ON Semiconductor, NCP1601AP Datasheet - Page 3

• Manufacturer Part Number: NCP1601AP
• Description: IC CTRLR PFC FREQ DCM/CRM 8DIP
• Manufacturer: ON Semiconductor

Specifications of NCP1601AP

• Mode: Critical Conduction (CRM), Discontinuous (Transition)
• Frequency - Switching: 58kHz
• Current - Startup: 17µA
• Voltage - Supply: 12.5 V ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Switching Frequency: 405 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: NCP1601APOS

PIN FUNCTION DESCRIPTION
Pin
1
2
3
4
5
6
7
8
FB
V
Ramp
CS
Osc
GND
Drv
V
Symbol
control
CC
Feedback /
Shutdown
Control
Ramp
Current Sense
Oscillator /
Synchronization
The IC ground
Drive Output
Supply Voltage
Function
This pin receives a current I
for the output regulation, output Overvoltage Protection (OVP), and output undervoltage protection
(UVP).
When I
When I
The voltage of this pin V
the circuit. This pin is connected to an external capacitor to limit the control voltage V
width typically below 20 Hz to achieve Power Factor Correction.
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.
This pin sources a current I
current is for Overcurrent Protection (OCP) and zero current detection.
When I
When I
modulation arrangement and by the oscillator block.
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.
- -
This pin provides an output to an external MOSFET.
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.
FB
FB
S
S
is above 200 mA, OCP is activated and the Drive Output is disabled.
is below 14 mA, the circuit detects a zero current. This information is used by the on- -time
goes above 107% I
goes below 8% I
http://onsemi.com
control
ref
S
FB
, the device enters a low- -current consumption shutdown mode.
3
which depends on the inductor current and an offset voltage. The
ref
directly controls the input impedance and hence the power factor of
which is proportional to the PFC circuit output voltage. The current is
, OVP is activated and the Drive Output is disabled.
Function
control
band-