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
3
2
1
5 PIN SOT23 ( L ) Fixed
En Gnd Vin
3
2
1
AT00
4
5
θ
JA
=220°C/W
4
ATxx
5
θ
JA
=220°C/W
Adj
Vout
Byp
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
SYM TEST CONDITION
MIN
TYP MAX
UNITS
Reference Voltage
Vo
-1
1
%
See Table 1 for typical values
(Note 4)
-2
2
Line Regulation
dVi
Vo+1V<Vin<10
0.005
%/V
Load Regulation (note 1)
dVL
1mA<Io<100mA
0.8
%
100mA<Io<300mA
0.1
%
Dropout Voltage (note 2)
dVio
Io=100uA
10
50
mV
Io=100uA (Note 4)
13
70
mV
Io=50mA
85
110
mV
Io=50mA (Note 4)
100
140
mV
Io=150mA
170
220
mV
Io=150mA (Note 4)
204
260
mV
Io=300mA
270
350
mV
Io=300mA (Note 4)
324
400
mV
Ground Current (Note 3)
Iq
Ven=2V, Io=100uA
120
160
uA
Io=100uA (Note 4)
240
uA
Io=50mA
420
600
uA
Io=50mA (Note 4)
540
uA
Io=150mA
2200 2900
uA
Io=150mA (Note 4)
2900
uA
Io=300mA
7200 9500
uA
Io=300mA (Note 4)
9300
uA
Ground Current-S.D Activated Iqsd
S.D pin<0.1V
0.1
uA
S.D pin=0.8V
8
Current Limit
Icl
Vo=0V
320
420
mA
Thermal Regulation
dVp
Vin=10V, Io=150mA,10 mS PULSE
0.05
%/W
Adjust Pin Current
Iadj
Vin=2.5V,Vo=Vadj
0.1
uA
Enable pin input LO voltage
Venl
Regulator OFF
0.8
V
Enable pin input HI voltage
Venh Regulator ON
2
V
Enable pin input LO current
Venl=0V to 0.8V
0.01
uA
Enable pin input HI current
Venh=2V to Vin
20
uA
2-2
Rev. 1.4
9/25/00
UNISEM [ UNISEM ]
