ncp1601a ON Semiconductor, ncp1601a Datasheet - Page 3

• Manufacturer Part Number: ncp1601a
• Description: Compact Fixed Frequency Discontinuous Or Critical Conduction Voltage Mode Power Factor Correction Controller
• Manufacturer: ON Semiconductor

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.
1. Guaranteed by design.
PIN FUNCTION DESCRIPTION
MAXIMUM RATINGS
FB, V
Drive Output (Pin 7)
Power Supply Voltage (Pin 8)
Power Dissipation and Thermal Characteristics
Operating Junction Temperature Range
Storage Temperature Range
Pin
1
2
3
4
5
6
7
8
Maximum Voltage Range
Maximum Current
Maximum Voltage Range
Maximum Current Range (Note 2)
Maximum Voltage Range
Maximum Current
P suffix, Plastic Package, Case 626
D suffix, Plastic Package, Case 751
A.
B.
control
FB
V
Ramp
CS
Osc
GND
Drv
V
Symbol
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.
This device contains Latchup protection and exceeds ±100 mA per JEDEC Standard JESD78.
control
CC
Maximum Power Dissipation @ T
Thermal Resistance, Junction−to−Air
Maximum Power Dissipation @ T
Thermal Resistance, Junction−to−Air
, Ramp, CS, Osc Pins (Pins 1−5)
Machine Model Method 200 V.
Feedback /
Shutdown
Control
Ramp
Current Sense
Oscillator /
Synchronization
The IC ground
Drive Output
Supply Voltage
Function
Rating
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.
A
A
=70 °C
=70 °C
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
NCP1601A, NCP1601B
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
Symbol
V
V
V
R
R
I
I
I
T
max
max
max
P
P
T
max
max
max
qJA
qJA
stg
D
D
J
−500 to +750
−40 to +125
−65 to +150
−0.3 to +18
−0.3 to +18
−0.3 to +9
Value
100
100
800
100
450
178
control
°C/W
°C/W
band-
Unit
mW
mW
mA
mA
mA
°C
°C
V
V
V