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US3033CS Fiches technique(PDF) 2 Page - UNISEM

No de pièce US3033CS
Description  PWM SWITCHER & LINEAR CONTROLLER IC
PDF  9 Pages
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Fabricant  UNISEM [UNISEM]
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US3033CS Fiches technique(HTML) 2 Page - UNISEM

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US3033
4-2
Rev. 1.5
1/14/99
ABSOLUTE MAXIMUM RATINGS
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
PACKAGE INFORMATION
8 PIN PLASTIC SOIC (S)
θJA=160°C/W
Linear Controller Section
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
F.B Voltage Initial Accuracy
VFB2
TJ =25
°C, Drv2=VFB2, CL=100uF
1.237
1.250
1.262
V
F.B Voltage Total Variation
Drv2=VFB2, CL=100uF
1.225
1.250
1.275
V
F.B Voltage Line Regulation
10<V12<14V,Drv2=VFB2, CL=100uF
0.2
%
F.B Input Bias Current
IFB2
VFB2 =1.25V
-1
+1
uA
Maximum Drive Current
IDRVMAX VFB2 =1V, VFB1 =1.5V
50
mA
V12 Supply Current
I12
VFB2 =1V, VFB1 =1.5V, IDRV2 =0
5
mA
Switching Controller Section
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
F.B Voltage Initial Accuracy
VFB1
TJ =25
°C
1.237
1.250
1.262
V
F.B Voltage Total Variation
1.225
1.250
1.275
V
F.B Voltage Line Regulation
0.2
%
F.B Input Bias Current
IFB1
VFB1 =1.25V
-1
+1
uA
Min On Time
VFB1 is sq wave with 300 ns on
800
nS
time and 2 uS off time
Min Off Time
VFB1 is sq wave with 300 ns off
800
nS
time and 2 uS on time
Vhyst pin output-HI
ISOURCE =500uA, VFB1 =1.5V
11
V
Vhyst pin output-LO
ISINK =500uA, VFB1 =1V
1
V
Supply Current
I12SW
VFB1 =1V , VFB2 =1.5V
10
mA
Maximum Duty Cycle
DMAX
VFB1 =1V
100
%
Minimum Duty Cycle
DMIN
VFB1 =1.5V
0
%
Gate Drive Rise/Fall Time
VGATE
Load=IRL3303
70
nS
ELECTRICAL SPECIFICATIONS
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.
4
3
2
1
5
6
7
8
TOP VIEW
Drv1
V12sw
Vfb1
Vhyst
Gnd
Vfb2
Drv2
V12



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