UC3854BN UNITRODE, UC3854BN Datasheet - Page 5

• 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

ELECTRICAL CHARACTERISTICS (Continued)
V
V
and T
(1) Ensured by design. Not production tested.
(2) Gain constant.
Copyright © 2003–2008, Texas Instruments Incorporated
OSCILLATOR
ENABLE/SOFT-START/CURRENT LIMIT
MULTIPLIER
GATE DRIVER
V
V
CC
VSENSE
OH
OL
= 18 V, R
www.ti.com
A
= T
= 3 V, –40 C < T
Initial accuracy
Voltage stability
Total variation
Ramp amplitude (peak-to-peak)
Ramp valley voltage
Enable threshold voltage
Enaable hysteresis
Enable input bias current
Propagation delay to disable time
Soft-start charge current
Peak limit offset voltage
Peak limit offset current
Peak limit propagation delay time
Output current, I
Output current, zero
Output current, power limited
Output current
Gain constant
High-level output voltage
Low-level output voltage
Low-level UVLO voltage
Output rise time
Output fall time
Output peak current
J
(unless otherwise noted)
T
= 8.2 kΩ, C
PARAMETER
( )
K
(2)
(1)
(1)
A
=
A
limited
T
< 85 C for the UC2854A and UC2854B, and 0 C < T
I
é
ë
(1)
IAC
(
= 1.5 nF, V
Product Folder Link(s):
V
VRMS
´
(
V
)
VAO
2
´
(1)
(1)
PKLMT
-
I
MOUT
1 5
. V
= 1 V, V
T
12 V ≤ V
Line, temperature
V
V
Enable overdrive = 100 mV
V
V
I
R
I
V
V
V
V
V
V
I
I
I
I
C
C
C
AC
AC
OUT
OUT
OUT
OUT
ù
û
A
FAULT
ENA
SS
PKLMIT
RMS
RMS
RMS
RMS
RMS
RMS
SET
LOAD
LOAD
LOAD
)
= 25 C
= 100 A,
= 0 A,
UC1854A UC2854A, UC2854B UC3854A, UC3854B
= 2.5 V
= –200 mA,
= 200 mA
= 10 mA
= 50 mA,
= 10 kΩ
= 0 V
= 1.5 V
= 1.5 V
= 1.5 V
= 5 V
= 5 V
= 1.5 V
= 1 nF
= 1 nF
= 10 nF
= 2.5 V
VRMS
= –0.1 V
CC
≤ 18 V
TEST CONDITIONS
= 1.5 V, I
V
R
Va = 6 V
Va = 2 V
Va = 5 V
Va = 2 V
Va = 5 V
Va = 6 V, T
V
V
RMS
CC
CC
SET
IAC
= 15 V
= 0 V
= 10 kΩ
= 1 V,
= 100 A, I
A
= 25 C
A
< 70 C for the UC3854A and UC3854B,
ISENSE
SLUS329E – MONTH 2003 – REVISED JANUARY 2008
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= 0 V, V
–200
–220
–230
2.35
–2.0
–1.1
12.0
MIN
–15
4.9
0.8
85
80
10
CAO
UC2854A, UC2854B
UC3854A, UC3854B
= 3.5 V, V
–100
–200
–200
–156
TYP
2.55
–0.2
–1.0
12.8
100
500
300
150
–22
–14
300
1%
1.0
0.9
1.0
–2
14
–2
35
35
VAO
MAX
–170
–170
2.80
–0.9
115
120
600
500
5.9
1.3
2.0
2.2
1.5
–5
24
15
UC1854A
= 5 V,
UNIT
kHz
kHz
mV
mV
A/A
mV
ns
ns
ns
ns
V
V
V
V
V
V
A
A
A
A
A
A
A
A
5