UC3853N UNITRODE, UC3853N Datasheet - Page 2

• Manufacturer Part Number: UC3853N
• Description: IC, POWER FACTOR PREREG, 3853, DIP8
• Manufacturer: UNITRODE

Specifications of UC3853N

• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Voltage: 17.5V
• Voltage Regulator Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: 0°C To +70°C
• Operating Temperature Max: 70°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
All voltages with respect to GND. Currents are positive into,
negative out of the specified terminal. Consult Packaging Section
of Databook for thermal limitations and considerations of
packages.
Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Output Drive Current,
Output Minimum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V
IAC Maximum Input Current . . . . . . . . . . . . . . . . . . . . . . . . 1mA
IMO Maximum Output Current . . . . . . . . . . . . . . . . . . . . . –2mA
IMO Minimum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V
FB Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
VCOMP Maximum Voltage. . . . . . . . . . . . . . . . . . . . . . . . . 6.2V
ICOMP Sourcing Current . . . . . . . . . . . . . . . . . . . . Self-Limiting
ICOMP Sinking Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
ICOMP Maximum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 7.2V
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C
ELECTRICAL CHARACTERISTICS
Undervoltage Lockout Section
Supply Current Section
Voltage Loop Error Amplifier Section
Current Loop Error Amplifier Section
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.125A
Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
VCC Turn-on Threshold
Hysteresis
IV
IV
Transconductance
Input Voltage
AVOL
Output Sink Current
Output Source Current
Output Voltage High
Output Voltage Low
Offset Voltage
Voltage Gain
Sink Current
Source Current
Output High
Output Low
PWM Modulator Gain
CC
CC
Startup
PARAMETER
Unless otherwise stated, these parameters apply for T
UC1853; –25°C to +85°C for the 2853; and 0°C to +70°C for the UC3853; VCC =
16V, V
V
V
IAC = 0 A, V
IOUT = ± 20 A 0-70C
Temperature
0-70C
Temperature
V
V
V
V
V
V
I
I
V
ICOMP
ICOMP
VCOMP
CC
VCOMP
FB
FB
ICOMP
IMO
IMO
ICOMP
= 3.2V, V
= 2.8V, V
= 8V, IAC = 100 A; V
= 100mV, V
= –0.1V, V
FB
= –50mA
= 50
= 1V – 4V
= 2V – 3V (Note 1)
, V
= 1V – 4V
= 3V, I
ICOMP
m
A
ICOMP
VCOMP
VCOMP
TEST CONDITIONS
ICOMP
AC
2
Open
ICOMP
= 100
= 0V
CONNECTION DIAGRAM
= 3.75V
= 3.75V
DIL-8, SOIC-8 (Top View)
J or N, D Package
= 3V
= 3V
m
A, V
VCOMP
VCOMP
, V
ICOMP
= 3.75V, V
Open
ICOMP
2.925
MIN
300
135
1.5
2.9
5.5
50
20
0
1
6
A
= 3V, T
= –55°C to +125°C for the
–150
TYP
11.5
250
450
–50
1.8
0.6
6.8
0.3
10
60
50
70
20
A
3
6
= T
J
.
3.075
MAX UNITS
500
575
640
–20
–80
2.1
3.1
0.9
0.8
13
15
6
UC1853
UC2853
UC3853
%/V
mA
mV
mA
mho
mho
m
dB
dB
m
V
V
V
V
V
V
V
V
A
A
A
A