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US1205 Fiches technique(PDF) 1 Page - UNISEM

No de pièce US1205
Description  300 mA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
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US1205 Fiches technique(HTML) 1 Page - UNISEM

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US1205
2-1
Rev. 1.4
9/25/00
DESCRIPTION
DESCRIPTION
The US1205 device is an efficient linear voltage regula-
tor with better than 1% initial voltage accuracy, very low
dropout voltage and very low ground current designed
especially for hand held, battery powered applications.
Other features of the device are; TTL compatible enable/
shutdown control input, current limiting and thermal
shutdown.
The US1205 is available in fixed and adjustable output
voltage versions in a small SOT23-5 package.
300 mA LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
FEATURES
FEATURES
SOT23 package
Stable with 2.2uF ceramic capacitor
1% Voltage Reference Accuracy
Only 270mV Dropout at 300 mA
170mV Dropout at 150mA
10nA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic input Enable pin
APPLICATIONS
APPLICATIONS
Laptop, Notebook & Palmtop computers
Battery powered Equipments
PCMCIA Vcc & Vpp regulator
Concumer Electronics
High Efficiency Linear Power Supplies
PRELIMINARY DATASHEET
PACKAGE ORDER INFORMATION
PACKAGE ORDER INFORMATION
Tj (°C)
5 LEAD
SOT23
Output
SOT 23
Marking
Voltage
0 TO 125
US1205CL
AT00
Adj
0 TO 125
US1205-25CL
AT25
2.5 V
0 TO 125
US1205-30CL
AT30
3.0 V
0 TO 125
US1205-33CL
AT33
3.3 V
0 TO 125
US1205-36CL
AT36
3.6 V
TYPICAL APPLICATION
TYPICAL APPLICATION
Typical application of the US1205 ajustable.
Typical application of the US1205 Fixed voltage.
Vo=1.242 X (1+R1/R2)
Vin
Vout
R1
R2
C1
2.2uF
C2
2.2uF
1205app1-1.1
S.D.
5
3
4
Vout
Adj
2
1 Vin
Gnd
En
Enable
3.3V
2.5V
C3
1000pF
C1
2.2uF
C2
2.2uF
1205app2-1.2
S.D.
Enable
5
3
4
Vout
Byp
2
1 Vin
Gnd
En


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