ON Semiconductor NCP1201, Manual

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NCP1201
http://onsemi.com
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PIN FUNCTION DESCRIPTION
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Pin No.
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ÁÁÁÁ
Pin Name
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Function
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Description
1 BOK Bulk OK This pin detects the input line voltage by sensing the bulk capacitor, and
disables the PWM when line voltage is lower than normal.
2 FB Sets the Peak Current Setpoint By connecting an optocoupler to this pin, the peak current setpoint is ad-
justed according to the output power demand. Internal monitoring of this
pin level triggers the fault management circuitry.
3 CS Current Sense Input This pin senses the primary inductor current and routes it to the internal
comparator via an LEB circuit.
4 GND The IC Ground −
5 DRV Driving Pulses The driver’s output to an external MOSFET.
6 VCC Supplies the IC This pin is connected to an external bulk capacitor of typically 10
m
F.
7 NC No Connection This unconnected pin ensures adequate creepage distance between High
Voltage pin to other pins.
8 HV Generates the V
CC
from the Line Connected to the high−voltage rail, this pin injects a constant current into
the V
CC
capacitor.
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MAXIMUM RATINGS
(T
J
= 25
°
C unless otherwise noted)
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Rating
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Symbol
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Value
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Unit
Power Supply Voltage, Pin 6 V
CC
−0.3, 16 V
Input/Output Pins
Pins 1, 2, 3, 5 V
IO
−0.3, 6.5 V
Maximum Voltage on Pin 8 (HV) V
HV
500 V
Thermal Resistance, Junction−to−Air, PDIP−8 Version
Thermal Resistance, Junction−to−Air, SOIC Version
R
q
JA
R
q
JA
100
178
°
C/W
°
C/W
Operating Junction Temperature Range T
J
−40 to +150
°
C
Operating Ambient Temperature Range T
A
−25 to +125
°
C
Storage Temperature Range T
stg
−55 to +150
°
C
ESD Capability, HBM (All pins except V
CC
and HV pins) (Note 1) − 2.0 kV
ESD Capability, Machine Model (All pins except V
CC
and HV pins) (Note 1) − 200 V
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. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) > 2.0 kV per JEDEC standard: JESD22−A114.
Machine Model (MM) > 200 V per JEDEC standard: JESD22−A115.
2. Latchup Current Maximum Rating:
±
150 mA per JEDEC standard: JESD78.