C1 330uF VIN VOUT. Gnd. Figure 1 - Typical application of IRU

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Domenic Carpenter
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1 ata Sheet o. 947 FTUS uaranteed <. ropout at Full oad urrent Fast Transient esponse % oltage eference Initial ccuracy Output urrent imiting uilt-in Thermal Shutdown ITIOS Standard. hip Set and ogic pplications 5 OW OOUT OSITI FIX. UTO SITIO The is a low dropout three-terminal fixed. output regulator with minimum of 5 output current capability. This product is specifically designed to provide well regulated supply for low voltage I applications requiring. output. The is guaranteed to have <. dropout at full load current making it ideal to provide well regulated output with supply voltage as low as 4.6 input. TYI ITIO 5 0uF. / 5 0uF Figure - Typical application of. O IFOTIO TJ ( ) -I STI -I STI -I STI -I STI T0-0 (T) TO-6 () Ultra Thin-ak T () TO-5 (-ak) 0 To 50 T ev..4 08/0/0

2 SOUT XIU TIS Input oltage ()... 7 ower issipation... Internally imited Storage Temperature ange To 50 Operating Junction Temperature ange... 0 To 50 IFOTIO -in lastic TO-0 (T) -in lastic TO-6 () -in lastic UT TI- T () -in lastic TO-5 (-ak) Tab is FOT IW Tab is FOT IW Tab is FOT IW Tab is OUT FOT IW θjt=.7 /W θj=60 /W θj=5 /W for " Square pad θj=70 /W for " Square pad θj=70 /W for 0.5" Sq pad TI SIFITIOS Unless otherwise specified, these specifications apply over I=µF, OUT=0µF, and TJ=0 to 50. Typical values refer to TJ=5. T SY TST OITIO I TY X UITS Output oltage ine egulation oad egulation (ote ) ropout oltage (ote ) urrent imit inimum oad urrent (ote ) Thermal egulation ipple ejection Temperature Stability ong Term Stability S Output oise o o Io=0m, TJ=5, =5 Io=0m, =5 Io=0m, 4.7<<7 =., 0m<Io<5 ote, Io=5 =5, o=00m =5 0ms ulse, -o=, Io=5 f=0z, o=5µf Tantalum, Io=.5, -o= =5, Io=0m TJ=5, 000rs TJ=5, 0z<f<0z % % m %/W d % % %o ote : ow duty cycle pulse testing with elvin connections is required in order to maintain accurate data. ote : ropout voltage is defined as the minimum differential voltage between and required to maintain regulation at. It is measured when the output voltage drops % below its nominal value. ote : inimum load current is defined as the minimum current required at the output in order for the output voltage to maintain regulation. Typically the resistor dividers are selected such that it automatically maintains this current. ev..4 08/0/0

3 I SITIOS I # I SYO I SITIO This pin must be connected to ground plane using a low inductance short connection. The output of the regulator. minimum of 0µF capacitor must be connected from this pin to ground to insure stability. The input pin of the regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be. higher than in order for the device to regulate properly. O I UT IIT T SUTOW Figure - Simplified block diagram of the. ITIO IFOTIO Stability The requires the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. Typical designs for microprocessor applications use standard electrolytic capacitors with a typical S in the range of 50 to 00mΩ and an output capacitance of 500 to 000µF. Fortunately as the capacitance increases, the S decreases resulting in a fixed time constant. The takes advantage of this phenomena in making the overall regulator loop stable. For most applications a minimum of 00µF aluminum electrolytic capacitor such as Sanyo X series, anasonic F series as well as the ichicon series insures both stability and good transient response. I WO QUTS: ansas St., l Segundo, alifornia 9045, US Tel: (0) T Fax: (0) isit us at for sales contact information ata and specifications subject to change without notice. 0/0 ev..4 08/0/0

4 () TO-5 ackage -in 45 7 J O Q F S SYO F J O Q S I S X TY 0.5 TY OT: SUTS I IITS. 4 ev..4 08/0/0

5 () TO-6 ackage -in U S SYO S U I F X F 7.75 F OT: SUTS I IITS. ev..4 08/0/0 5

6 () Ultra Thin-ak T -in U SYO U I X O OT: SUTS I IITS. 6 ev..4 08/0/0

7 (T) TO-0 ackage -in e b Q e e b -I a (5x) J F SYO a b b e e e F J Q I X OT: SUTS I IITS. ev..4 08/0/0 7

8 SIT TO SI T SITIO TO-5, (-ak) TO-6 Ultra Thin-ak T TO-0 I OUT TS TU TS T & Orientation Fig Fig Fig --- Feed irection Figure Feed irection Figure Feed irection Figure I WO QUTS: ansas St., l Segundo, alifornia 9045, US Tel: (0) T Fax: (0) isit us at for sales contact information ata and specifications subject to change without notice. 0/0 8 ev..4 08/0/0

5V C1 1500uF VIN VOUT. Adj. Typical application of IRU1075 in a 5V to 3.3V regulator.

5V C1 1500uF VIN VOUT. Adj. Typical application of IRU1075 in a 5V to 3.3V regulator. ata Sheet No. 948 FTUS ropout at Full oad Current Fast Transient esponse % oltage eference Initial ccuracy Output Current imiting Built-In Thermal Shutdown ICTIONS ow oltage rocessor pplications such as: