US3033 UNISEM, US3033 Datasheet - Page 2

• Manufacturer Part Number: US3033
• Description: PWM SWITCHER & LINEAR CONTROLLER IC
• Manufacturer: UNISEM

US3033
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
V
F.B Pin Voltages........................................................
Storage Temperature Range ................................. -65 TO 150 C
Operating Junction Temperature ............................... 0 TO 150 C
PACKAGE INFORMATION
PACKAGE INFORMATION
ELECTRICAL SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Unless otherwise specified the following specification applies over V
cycle pulse testing are used which keeps junction and case temperatures equal to the ambient temperature.
Linear Controller Section
PARAMETER
F.B Voltage Initial Accuracy
F.B Voltage Total Variation
F.B Voltage Line Regulation
F.B Input Bias Current
Maximum Drive Current
V
Switching Controller Section
PARAMETER
F.B Voltage Initial Accuracy
F.B Voltage Total Variation
F.B Voltage Line Regulation
F.B Input Bias Current
Min On Time
Min Off Time
Vhyst pin output-HI
Vhyst pin output-LO
Supply Current
Maximum Duty Cycle
Minimum Duty Cycle
Gate Drive Rise/Fall Time
4-2
12
12
,V
Supply Current
12SW
8 PIN PLASTIC SOIC (S)
Supply Voltages ............................................................. 20V
V12sw
Vhyst
Drv1
Vfb1
JA
1
2
3
4
=160 C/W
TOP VIEW
8
7
6
5
V12
Drv2
Vfb2
Gnd
SYM
I
I
SYM
V
I
I
D
D
V
V
DRVMAX
FB1
12SW
FB2
I
FB1
GATE
FB2
12
MAX
MIN
TEST CONDITION
TEST CONDITION
T
Drv2=V
10<V
V
V
V
T
V
V
time and 2 uS off time
V
time and 2 uS on time
I
I
V
V
V
Load=IRL3303
SOURCE
SINK
J
J
FB2
FB2
FB2
FB1
FB1
FB1
FB1
FB1
FB1
=25 C
=25 C, Drv2=V
=500uA, V
=1.25V
=1V
=1.5V
is sq wave with 300 ns on
is sq wave with 300 ns off
=1V, V
=1V, V
=1V , V
=1.25V
12
<14V,Drv2=V
=500uA, V
FB2
, C
FB1
FB1
FB2
L
=100uF
FB1
=1.5V
=1.5V, I
=1.5V
-0.3V to 5V
FB1
=1V
FB2
=1.5V
, C
FB2
, C
L
DRV2
=100uF
L
=100uF
12
=0
=V
12SW
=12V, and T
MIN
1.237
1.225
1.237
1.225
MIN
-1
-1
11
0
TYP
TYP
1.250
1.250
1.250
1.250
800
800
0.2
50
0.2
10
70
5
A
=0 to 70 C. Low duty
1.262
1.275
MAX
1.262
1.275
MAX
100
+1
+1
1
UNITS
UNITS
Rev. 1.5
mA
mA
1/14/99
uA
uA
nS
nS
mA
nS
V
V
V
V
V
V
%
%
%
%