UC3854BN UNITRODE, UC3854BN Datasheet - Page 10

• Manufacturer Part Number: UC3854BN
• Description: HIGH POWER FACTOR REG, 3854, DIP16
• Manufacturer: UNITRODE

Specifications of UC3854BN

• Primary Input Voltage: 20V
• No. Of Outputs: 1
• Output Voltage: 12.8V
• Voltage Regulator Case Style: DIP
• No. Of Pins: 16
• Operating Temperature Range: 0°C To +70°C
• Operating Temperature Max: 70°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

UC1854A
UC2854A, UC2854B
UC3854A, UC3854B
SLUS329E – MONTH 2003 – REVISED JANUARY 2008
10
800
700
600
500
400
300
200
100
1.20
1.16
1.12
1.08
1.04
1.00
0.96
0.92
0.88
0.84
0.80
0
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0
0
VA Out = 3.5 V
V
RMS
V
RMS
0.01
C
= 3 V
LOAD
MULTIPLIER GAIN CONSTANT
50
= 5 V
I
AC
LOAD CAPACITANCE
GATE DRIVE TIMING
− Load Capacitance − F
− Supply Current − A
SUPPLY CURRENT
0.02
Fall Time
100
Product Folder Link(s):
Figure 1.
Figure 3.
vs
vs
V
0.03
RMS
150
Rise Time
= 1.5 V
TYPICAL CHARACTERISTICS
0.04
200
UC1854A UC2854A, UC2854B UC3854A, UC3854B
0.05
250
100
1.20
1.16
1.12
1.08
1.04
1.00
0.96
0.92
0.88
0.84
0.80
95
90
85
80
75
70
1000
0
V
OSCILLATOR CHARGING RESISTANCE
RMS
VA Out = 5 V
GATE DRIVE MAXIMUM DUTY CYCLE
R
SET
= 1.5 V
MULTIPLIER GAIN CONSTANT
Copyright © 2003–2008, Texas Instruments Incorporated
50
− Oscillator Charging Resistance −
I
AC
SUPPLY CURRENT
− Supply Current − A
100
Figure 2.
Figure 4.
vs
10 k
vs
150
V
RMS
V
200
= 1.5 V
www.ti.com
RMS
= 5 V
100 k
250