ld2985-5.0v Unisonic Technologies, ld2985-5.0v Datasheet
ld2985-5.0v
Available stocks
Related parts for ld2985-5.0v
ld2985-5.0v Summary of contents
Page 1
... LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION DESCRIPTION The UTC LD2985 is a 150mA fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1µ ...
Page 2
... Bypass pin: Capacitor to be connected to GND in order to improve the thermal 4 Bypass noise performances. 5 OUT Output port UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT PART VOLTAGE VOLTAGE NUMBER CODE LD2985-3.3V 3.3V C3 LD2985-3.5V 3.5V C5 LD2985-3.6V 3.6V C6 LD2985-3.8V 3.8V C8 LD2985-4.0V 4.0V D0 LD2985-4.7V 4.7V D7 LD2985-5.0V 5.0V DESCRIPTION MARKING VOLTAGE CODE QW-R102-024.E ...
Page 3
... LD2985 BLOCK DIAGRAM V IN START-UP INHIBIT SHUTDOWN BYPASS GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT CURRENT LIMIT REFERENCE ERROR VOLTAGE AMPLIFIER TERM. PROTEC. V OUT DRIVER QW-R102-024.E ...
Page 4
... LD2985 ABSOLUTE MAXIMUM RATINGS PARAMETER DC Input Voltage INHIBIT Input Voltage Output Current Power Dissipation Operating Junction Temperature Storage Temperature Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ...
Page 5
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =1.8V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO., LTD www ...
Page 6
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =2.5V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO., LTD www ...
Page 7
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =2.8V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO., LTD www ...
Page 8
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =2.85V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 9
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.0V OUT Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO., LTD www ...
Page 10
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.1V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 11
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.2V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 12
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.3V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 13
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.5V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 14
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.6V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 15
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =3.8V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 16
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =4.0V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 17
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =4.7V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 18
... LD2985 ELECTRICAL CHARACTERISTICS(Cont.) FOR V =5.0V OUT PARAMETER SYMBOL Operating Input Voltage V Output Voltage V Short Circuit Current Line Regulation V △ OUT Dropout Voltage Quiescent Current Supply Voltage Rejection SVR Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage UNISONIC TECHNOLOGIES CO ...
Page 19
... LD2985 REVERSE CURRENT TEST CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT QW-R102-024 ...
Page 20
... OUTPUT CAPACITOR The UTC LD2985 is designed specifically to work with ceramic output capacitors. It may also be possible to use Tantalum capacitors, but these are not as attractive for reasons of size and cost. By the way, the output capacitor must meet both the requirement for minimum amount of capacitance and E.S.R. (equivalent series resistance) value. ...
Page 21
... LD2985 TYPICAL CHARACTERISTICS Output Voltage vs Temperature 2.60 V =3. =1mA 2.58 OUT 2.56 2.54 2.52 2.50 2.48 2.46 2.44 2.42 2.40 -50 - (℃) Dropout Voltage vs Temperature 0.4 V =2.5V OUT C =10nF by I OUT 0.3 0.2 0.1 0 -50 - (℃) Dropout Voltage vs Output Current 250 200 150 100 V OUT 100 I (mA) OUT UNISONIC TECHNOLOGIES CO., LTD www ...
Page 22
... LD2985 TYPICAL CHARACTERISTICS(Cont.) Supply Voltage Rejection vs Output Current 100 =3 =10μF O fosc=1KHz 0 50 100 (mA) OUT Supply Voltage Rejection vs Output Current 100 =3 =1μF O fosc=1KHz 0 50 100 (mA) OUT Supply Voltage Rejection vs Frequency ...
Page 23
... LD2985 TYPICAL CHARACTERISTICS(Cont.) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury ...