US3034CS UNISEM, US3034CS Datasheet - Page 2

• Manufacturer Part Number: US3034CS
• Description: 8 PIN PWM SWITCHER CONTROLLER IC
• Manufacturer: UNISEM

US3034
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
pulse testing are used which keeps junction and case temperatures equal to the ambient temperature.
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
C.L Threshold Current
C.S Comp Common Mode
Soft Start Current
4-2
12
Supply Voltages ............................................................. 20V
8 PIN PLASTIC SOIC (S)
Vhyst
V12
Drv
Vfb
JA
=160 C/W
1
2
3
4
TOP VIEW
8
7
6
5
SS
CS+
CS-
Gnd
SYM
V
I
I
D
D
V
I
12SW
FB
CL
FB
MAX
MIN
GATE
TEST CONDITION
T
V
V
time and 2 uS off time
V
time and 2 uS on time
I
I
V
V
V
Load=IRL3303
C.S+ , C.S- from 1.3V to 3.7V
V
SOURCE
SINK
J
FB
FB
FB
FB
FB
FB
CS+
=25 C
=1.25V
is sq wave with 300 ns on
is sq wave with 300 ns off
=1V
=1V
=1.5V
=500uA, V
= V
=500uA, V
CS-
FB
-0.3V to 5V
=1V
FB
=1.5V
12
=12V, and T
1.237
1.225
MIN
-1
11
0
0
A
=0 to 70 C. Low duty cycle
TYP
1.250
1.250
800
800
0.2
10
70
20
10
MAX
1.262
1.275
100
4.5
+1
1
UNITS
Rev. 1.8
1/13/99
uA
nS
nS
mA
nS
uA
V
V
V
V
V
uA
%
%
%