US3033 View Datasheet(PDF) - Unisem
Part Name
Description
View to exact match
US3033 Datasheet PDF : 9 Pages
| |||
US3033
ABSOLUTE MAXIMUM RATINGS
V12,V12SW Supply Voltages ............................................................. 20V
F.B Pin Voltages........................................................ -0.3V to 5V
Storage Temperature Range ................................. -65 TO 150°C
Operating Junction Temperature ............................... 0 TO 150°C
PACKAGE INFORMATION
8 PIN PLASTIC SOIC (S)
TOP VIEW
Drv1 1
8 V12
V12sw 2
7 Drv2
Vfb1 3
6 Vfb2
Vhyst 4
5 Gnd
θJA =160°C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified the following specification applies over V12 =V12SW =12V, and TA =0 to 70°C. Low duty
cycle pulse testing are used which keeps junction and case temperatures equal to the ambient temperature.
Linear Controller Section
PARAMETER
SYM TEST CONDITION
F.B Voltage Initial Accuracy VFB2 TJ =25°C, Drv2=VFB2, CL=100uF
F.B Voltage Total Variation
Drv2=VFB2, CL=100uF
F.B Voltage Line Regulation
10<V12<14V,Drv2=VFB2, CL=100uF
F.B Input Bias Current
IFB2
VFB2 =1.25V
Maximum Drive Current
IDRVMAX VFB2 =1V, VFB1 =1.5V
V12 Supply Current
I12
VFB2 =1V, VFB1 =1.5V, IDRV2 =0
Switching Controller Section
PARAMETER
SYM TEST CONDITION
F.B Voltage Initial Accuracy
VFB1 TJ =25°C
F.B Voltage Total Variation
F.B Voltage Line Regulation
F.B Input Bias Current
IFB1
VFB1 =1.25V
Min On Time
VFB1 is sq wave with 300 ns on
time and 2 uS off time
Min Off Time
VFB1 is sq wave with 300 ns off
time and 2 uS on time
Vhyst pin output-HI
ISOURCE =500uA, VFB1 =1.5V
Vhyst pin output-LO
ISINK =500uA, VFB1 =1V
Supply Current
I12SW VFB1 =1V , VFB2 =1.5V
Maximum Duty Cycle
DMAX VFB1 =1V
Minimum Duty Cycle
DMIN VFB1 =1.5V
Gate Drive Rise/Fall Time
VGATE Load=IRL3303
MIN
1.237
1.225
-1
TYP
1.250
1.250
0.2
50
5
MAX
1.262
1.275
+1
UNITS
V
V
%
uA
mA
mA
MIN
1.237
1.225
-1
TYP
1.250
1.250
0.2
800
MAX
1.262
1.275
+1
UNITS
V
V
%
uA
nS
800
nS
11
V
1
V
10
mA
100
%
0
%
70
nS
4-2
Rev. 1.5
1/14/99
|
|
Share Link: 