US1206/1207/1208/1209
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) ............................................................. 12V
Enable Input Voltage ........................................................... 12V
Storage Temperature Range ................................ -65°C TO 150°C
Operating Junction Temperature Range ...................... 0°C TO 135°C
PACKAGE INFORMATION
5 PIN PLASTIC TO263 ( M ) or 5 PIN POWER FLEX (P)
3 PIN PLASTIC TO263 ( M )
US1207
US1208
US1209
US1206-XX
FRONT VIEW
FRONT VIEW
FRONT VIEW
FRONT VIEW
3
5
4
3
2
1
5
4
3
2
1
Vout
Flag
Vout
Gnd
Vin
Adj
5
4
3
2
1
Adj
Vout
Gnd
Vin
Vout
Gnd
Vin
2
Gnd
1
Vin
Enable
Flag
Enable
qJA=35°C/W for 0.5" square pad
8 PIN PLASTIC POWER SOIC ( S )
US1207 US1208
qJA=35°C/W for 0.5" square pad
US1209
TOP VIEW
TOP VIEW
TOP VIEW
1
8
7
6
5
1
8
7
6
5
1
8
7
6
5
Enable
Vin
Gnd
Gnd
Gnd
Gnd
Flag
Vin
Gnd
Gnd
Gnd
Gnd
Enable
Vin
Gnd
Gnd
Gnd
Gnd
qJA=55°C/W for 1" Sq pad
2
3
4
2
3
4
2
3
4
Vout
Adj
Vout
Flag
Vout
Adj
3 PIN PLASTIC TO252 ( D )
3 PIN PLASTIC SOT223 ( Y )
US1206
US1206
FRONT VIEW
TOP VIEW
3
Vout
3
2
1
Vout
Gnd
Vin
qJA=90°C/W for
qJA=70°C/W for
Tab is
Gnd
Tab is
4
Gnd
0.4" Sq pad
0.5" Sq pad
1
Vin
ELECTRICAL SPECIFICATIONS
Unless otherwise specified ,these specifications apply over ,Cin=Cout=10uF,Vin=Vo+1V, Vout=Vfb (for adjustable
version only), and Ta=25 °C. Typical values refer to Ta=25 °C.Low duty cycle pulse testing are used which keeps
junction and case temperatures equal to the ambient temperature.
PARAMETER
Reference Voltage
SYM TEST CONDITION
MIN
-1
TYP MAX
UNITS
Vo
Io=10mA
1
%
See Table 1 for typical values
Line Regulation
Load Regulation (note 1)
(Note 4)
-2
2
0.06
dVi
dVL
Vo+1V<Vin<12
10mA<Io<1A
1mA<Io<150mA
%/V
%
%
0.7
0.5
Output voltage Temp Coef.
Dropout Voltage (note 2)
dVoT
dVio
20
100
200
400
650
ppm/°C
mV
Io=100mA (Note 4)
Io=500mA (Note 4)
Io=1000mA (Note 4)
Vin=Vo +1
100
300
500
mV
mV
Ground Current (Note 3)
Iq
Io=100mA (Note 4)
Io=500mA (Note 4)
Io=1000mA (Note 4)
Vo=0V
3
15
50
mA
mA
mA
A
Current Limit
Icl
1.1
Minimum Input Voltage
US1208,1209
Vinmin
2.1
2.3
V
Adjust Pin Current
Minimum Load Current
Iadj
Iomin
Vin=2.5V,Vo=Vadj (Note 4)
0.1
1
uA
mA
Rev. 1.1
6/26/00
2-2
UNISEM [ UNISEM ]
