UC1854J UNITRODE, UC1854J Datasheet - Page 3

• Manufacturer Part Number: UC1854J
• Description: UNITRODE
• Manufacturer: UNITRODE

ELECTRICAL
CHARACTERISTICS
Note 5: Multiplier Gain Constant (k) is defined by:
Note 6: Guaranteed by design. Not 100% tested in production.
CURRENT AMPLIFIER
REFERENCE
MULTIPLIER
OSCILLATOR
GATE DRIVER
CURRENT LIMIT
Current Amp Offset Voltage
I
Input Range, I
Current Amp Gain
Current Amp Output Swing
Current Amp Short Circuit Current
Current Amp Gain-BW Product
Reference Output Voltage
V
V
V
Mult Out Current I
Mult Out Current Zero
Mult Out Current R
Mult Out Current
Multiplier Gain Constant
Oscillator Frequency
C
C
Maximum GT Drv Output Voltage
GT Drv Output Voltage High
GT Drv Output Voltage Low, Off
GT Drv Output Voltage Low
Peak GT Drv Current
GT Drv Rise/Fall Time
GT Drv Maximum Duty Cycle
PKLMT Offset Voltage
PKLMT Input Current
PKLMT to GT Drv Delay
SENSE
REF
REF
REF
T
T
Ramp Peak-to-Valley Amplitude
Ramp Valley Voltage
Load Regulation
Line Regulation
Short Circuit Current
Bias Current
PARAMETER
SENSE
AC
SET
, Mult Out
Limited
Limited
Unless otherwise stated, V
V
VA Out, REF, GT Drv, –55
0
o
RMS
C<T
=1.5V, I
A
<70
o
CA Out=0V
T
I
I
–10mA<I
15V<V
REF=0V
I
I
I
I
I
I
I
I
(Note 5)
R
R
0mA load on GT Drv, 18V<V
–200mA load on GT Drv, V
V
200mA load on GT Drv
10mA load on GT Drv
10nF from GT Drv to Gnd
1nF from GT Drv to Gnd
V
PKLMT=–0.1V
PKLMT falling from 50mV to –50mV
C for the UC3854, and T
REF
REF
AC
AC
AC
AC
AC
AC
AC
AC
AC
A
CC
CA Out
SET
SET
=25
=100 A, R
=0 A, R
=450 A, R
=50 A, V
=100 A, V
=200 A, V
=300 A, V
=100 A, V
=100 A, I
=0V, 50mA load on GT Drv
=0mA, T
=0mA, Over Temp.
=15k
=8.2k
o
CC
=7V
C (Note 6)
REF
<35V
SET
<0mA
RMS
A
TEST CONDITIONS
SENSE
SET
SET
RMS
RMS
RMS
RMS
=25
o
=15k
CC
I
C<T
Mult Out
=2V, VA=4V
=10k, V
=15k, V
=18V, R
=2V, VA=2V
=2V, VA=4V
=1V, VA=2V
=1V, VA=2V
o
C
=0V, CA Out=3.5V, VA Out=5V, V
A
<125
RMS
RMS
A
k
3
SET
o
=T
C for the UC1854, –40
CC
CC
I
=15k to ground, C
J
=1.25V
=1V, VA Out = 6V
AC
=15V
.
<35V
V
RMS
VA Out 1
2
T
=1.5nF to ground, PKLMT=1V, ENA=7.5V,
–0.3 to 2.5
o
C<T
–500
–220
–280
–165
–250
–200
MIN
7.35
–2.0
–36
400
–15
–10
–50
–50
–38
–95
–10
7.4
4.9
0.8
–4
80
46
86
13
12
SENSE
A
<85
=7.5V, no load on SS, CA Out,
o
0.5 to 16
C for the UC2854, and
–120
–200
–255
–150
–225
–100
TYP
–0.2
–1.0
14.5
12.8
110
–20
800
–28
–42
–27
–80
102
175
7.5
7.5
5.4
1.1
0.9
1.0
0.1
1.0
55
35
95
5
2
MAX
–180
–220
–105
–150
7.65
500
–12
–33
–12
–60
118
7.6
2.0
5.9
1.3
1.5
2.2
0.4
15
10
62
–5
18
10
4
UC1854
UC2854
UC3854
UNITS
kHz
kHz
kHz
mV
mA
mV
mV
mA
mV
nA
dB
ns
%
ns
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
A
A
A
A
A
A