US1205
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) ............................................................. 10V
Enable Input Voltage ........................................................... 10V
Storage Temperature Range ................................ -65°C TO 150°C
Operating Junction Temperature Range ...................... 0°C TO 150°C
PACKAGE INFORMATION
5 PIN SOT23 ( L ) Adjustable
En Gnd Vin
5 PIN SOT23 ( L ) Fixed
En Gnd Vin
3
2
1
3
2
1
qJA=220°C/W
qJA=220°C/W
ATxx
AT00
4
5
4
5
Byp
Vout
Adj
Vout
ELECTRICAL SPECIFICATIONS
Unless otherwise specified ,these specifications apply over ,Cin=Co=22uF, Io=100uA, Vinmin=2.5V(Adjustable
devices) Vin=Vo+1V(for fixed voltage devices), Vout=Vfb (for adjustable version only), Cbyp=470pF(for fixed output
versions only), Venb=2V 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
Vo
MIN
-1
TYP MAX
UNITS
1
%
See Table 1 for typical values
Line Regulation
Load Regulation (note 1)
(Note 4)
-2
2
0.005
0.8
dVi
dVL
Vo+1V<Vin<10
1mA<Io<100mA
100mA<Io<300mA
Io=100uA
Io=100uA (Note 4)
Io=50mA
Io=50mA (Note 4)
Io=150mA
Io=150mA (Note 4)
Io=300mA
Io=300mA (Note 4)
Ven=2V, Io=100uA
Io=100uA (Note 4)
Io=50mA
Io=50mA (Note 4)
Io=150mA
Io=150mA (Note 4)
Io=300mA
Io=300mA (Note 4)
S.D pin<0.1V
%/V
%
%
0.1
Dropout Voltage (note 2)
Ground Current (Note 3)
dVio
10
13
50
70
mV
mV
mV
mV
mV
mV
mV
mV
uA
uA
uA
uA
uA
uA
uA
uA
uA
85
110
140
220
260
350
400
160
100
170
204
270
324
120
240
420
540
Iq
600
2200 2900
2900
7200 9500
9300
0.1
8
Ground Current-S.D Activated Iqsd
S.D pin=0.8V
Current Limit
Thermal Regulation
Adjust Pin Current
Enable pin input LO voltage
Enable pin input HI voltage
Enable pin input LO current
Enable pin input HI current
Icl
Vo=0V
320
2
420
0.05
0.1
0.8
mA
%/W
uA
V
V
uA
uA
dVp
Iadj
Venl
Vin=10V, Io=150mA,10 mS PULSE
Vin=2.5V,Vo=Vadj
Regulator OFF
Venh Regulator ON
Venl=0V to 0.8V
Venh=2V to Vin
0.01
20
Rev. 1.4
9/25/00
2-2
UNISEM [ UNISEM ]
