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US2076 Datasheet(PDF) 2 Page - UNISEM

Part No. US2076
Description  PWM SWITCHER CONTROLLER & 7.5A ADJUSTABLE LOW DROPOUT REGULATOR COMBO
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Maker  UNISEM [UNISEM]
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US2076 Datasheet(HTML) 2 Page - UNISEM

   
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US2076
4-2
Rev. 1.3
4/26/98
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
12V Supply Voltage ............................................................. 14V
Vin Supply Voltage ..............................................................
7V
LDO Power Dissipation ....................................
Internally Limited
FB Pin Voltage........................................................
-0.3V to 5V
Storage Temperature Range .................................
-65 TO 150
°C
Operating Junction Temperature ............................... 0 TO 150
°C
PACKAGE INFORMATION
PACKAGE INFORMATION
7 PIN PLASTIC TO220 (T)
7 PIN PLASTIC TO263 (M)
θJT=2.7°C/W θJA=60°C/W
θJA=35°C/W for 1" Square pad
LDO Section
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
F.B Voltage Initial Accuracy
Vfb2
Tj=25
°C
1.237
1.250
1.262
V
F.B Voltage Total Variation
Vfb2
1.225
1.250
1.275
V
F.B Input Bias Current
Ifb2
Vfb2=1.25V
-1
+1
uA
Dropout Voltage (note 2)
Vout=1.25V, Io=7.5A
1.1
V
Line Regulation
Vout=1.25V,Io=10mA, 3<Vin<6V
0.2
%
Load Regulation (note 1)
Vout=1.25V, 10mA<Io<7.5A
0.5
%
Thermal Regulation
30 mS Pulse
0.01
%/W
Minimum Load Current (note 3)
10
mA
Ripple Rejection
f=120HZ ,Co=25uF Tan,Io=1A
70
dB
V12 Supply Current
Icc2
Vfb2=1V, Vfb1=1.5V, Io=7.5A
75
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
Vfb1
1.225
1.250
1.275
V
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
V12 Supply Current
Icc1
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
F.B Hysterises
12
mV
ELECTRICAL SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Unless otherwise specified the following specification applies over,Vin=5V,V12=12V,and Tj=0 to 125
°C.Low duty
cycle pulse testing are used which keeps junction and case temperatures equal to the ambient temperature.
FRONT VIEW
1
2
3
4
5
6
7
Drv
V12
Vfb1
Gnd
Vfb2
Vout
Vin
FRONT VIEW
1
2
3
4
5
6
7
Drv
V12
Vfb1
Gnd
Vfb2
Vout
Vin


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