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US1205 Datasheet PDF

UNISEM US1205

The US1205 device is an efficient linear voltage regulator with better than 1% initial voltage accuracy, very low dropout voltage and very low ground current designed especially for hand held, battery powered applications. The US1205 is available in fixed and adjustable output voltage versions in a small SOT23-5 package. Enable En Adj 4 1205app1-1.1 Typical application of the US1205 ajustable.
Part No. US1205
Datasheet US1205 Download
Manufacturer
UNISEM
Description 300 mA LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
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US1205 datasheet page 1 preview

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

DESCRIPTION

Other features of the device are; TTL compatible enable/ shutdown control input, current limiting and thermal shutdown.

APPLICATIONS

Laptop, Notebook & Palmtop computers Battery powered Equipments PCMCIA Vcc & Vpp regulator Concumer Electronics High Efficiency Linear Power Supplies TYPICAL APPLICATION Vin C1 2.2uF 1 2 3 Vin Vout 5 R1 C2 2.2uF Vout Gnd R2 Vo=1.242 X (1+R1/R2) S.D. 3.3V C1 2.2uF 1 2 3 Vin Vout 5 C2 2.2uF 2.5V Gnd S.D. Enable En Byp 4 C3 1000pF 1205app2-1.2 Typical application of the US1205 Fixed voltage. PACKAGE ORDER INFORMATION Tj (°C) 0 TO 125 0 TO 125 0 TO 125 0 TO 125 0 TO 125 Rev. 1.4 9/25/00 5 LEAD SOT 23 US1205CL US1205-25CL US1205-30CL US1205-33CL US1205-36CL SOT23 Marking AT00 AT25 AT30 AT33 AT36 Output Voltage Adj 2.5 V 3.0 V 3.3 V 3.6 V 2-1 US1205

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Vin) .............................................................
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