Data Sheet PD94133revA 300mA ULTRA DROPOUT POSITIVE ADJUSTABLE FI

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Data Sheet PD94133revA 300mA ULTRA DROPOUT POSITIVE ADJUSTABLE FI

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IRU1205(PbF IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
Data Sheet PD94133revA
300mA ULTRA DROPOUT POSITIVE ADJUSTABLE FIXED REGULATORS FEATURES
SOT-23 Package Stable with 2.2µF Ceramic Capacitor Voltage Reference Accuracy Only 270mV Dropout 300mA 170mV Dropout 150mA Quiescent Current Shutdown Current Limit Thermal Shutdown Logic Input Enable
DESCRIPTION
IRU1205 device efficient linear voltage regulator with better than initial voltage accuracy, very dropout voltage very ground current designed especially hand held, battery powered applications. Other features device are: compatible enable/ shutdown control input, current limiting thermal shutdown. IRU1205 available fixed adjustable output voltage versions small SOT-23 5-Pin package.
APPLICATIONS
Laptop, Notebook Palmtop computers Battery Powered Equipments PCMCIA Regulator Consumer Electronics High Efficiency Linear Power Supplies
TYPICAL APPLICATION
2.2uF
VOUT
2.2uF
VOUT
1.253
Enable
Figure Typical application IRU1205 ajustable voltage regulator.
3.3V
2.2uF
VOUT
2.2uF
2.5V
Enable
CBYP
1000pF
Figure Typical application IRU1205-25 fixed voltage regulator.
Rev.
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IRU1205(PbF) IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
PACKAGE ORDER INFORMATION
Basic Part (Non-Lead Free)
(°C) 5-PIN SOT-23 (L5) IRU1205CL IRU1205-18CL IRU1205-25CL IRU1205-28CL IRU1205-30CL IRU1205-33CL IRU1205-36CL SOT-23 MARKING AT00 AT18 AT25 AT28 AT30 AT33 AT36 OUTPUT VOLTAGE 1.8V 2.5V 2.8V 3.0V 3.3V 3.6V
Leadfree Part
(°C) 5-PIN SOT-23 (L5) IRU1205CLPbF IRU1205-18CLPbF IRU1205-25CL IRU1205-28CLPbF IRU1205-30CLPbF IRU1205-33CLPbF IRU1205-36CLPbF SOT-23 MARKING AT00 AT18 AT25 AT28 AT30 AT33 AT36 OUTPUT VOLTAGE 1.8V 2.5V 2.8V 3.0V 3.3V 3.6V
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Rev.
IRU1205(PbF IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) Enable Input Voltage Storage Temperature Range Operating Junction Temperature Range -65°C 150°C 150°C
PACKAGE INFORMATION
5-PIN SOT-23 (L5)
5-PIN SOT-23 (L5)
AT00
Adjustable
ATxx
CBYP
Fixed
VOUT
JA=2568C/W
VOUT
JA=2568C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over CIN=Co=22µF, Io=100µA, VIN(MIN)=2.5V(Adjustable devices) VIN=Vo 1V(for fixed voltage devices), VOUT=VFB(for adjustable version only), CBYP=470pF(for AT18, AT25, AT28, AT30, AT33 AT36), VENB=2V TA=258C. Typical values refer TA=258C. duty cycle pulse testing used which keeps junction case temperatures equal ambient temperature. PARAMETER Reference Voltage (See Table typical values) Line Regulation Load Regulation (Note Dropout Voltage (Note VI(O) TEST CONDITION (Note 1V<VIN<10V 1mA<Io<100mA 100mA<Io<300mA Io=100µA Io=100µA (Note Io=50mA Io=50mA (Note Io=150mA Io=150mA (Note Io=300mA Io=300mA (Note VEN=2V, Io=100µA Io=100µA (Note Io=50mA Io=50mA (Note Io=150mA Io=150mA (Note Io=300mA Io=300mA (Note VEN=0V 0.8V Open Vo=0V VIN=10V, Io=150mA, 10ms Pulse VIN=2.5V, Vo=VADJ Regulator Regulator VEN(L)=0V 0.8V VEN(H)=2V www.irf.com 0.005 2200 2900 7200 9300 0.05 0.01 UNITS 2900 9500
Ground Current (Note
Ground Current-SD Activated Current Limit Thermal Regulation Adjust Current Enable Input Voltage Enable Input Voltage Enable Input Current Enable Input Current
Rev.
IQ(SD) IADJ VEN(L) VEN(H)
IRU1205(PbF) IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
Note duty cycle pulse testing with Kelvin connections required order maintain accurate data. Note Dropout voltage defined minimum differential voltage between VOUT required maintain regulation VOUT. measured when output voltage drops below nominal value. Note Ground current regulator quiescent current plus pass transistor current. total current from supply load current plus ground current. Note specification applies junction temperature +1258C.
DESCRIPTIONS
SYMBOL DESCRIPTION input regulator. Typically large storage capacitor connected from this ground insure that input voltage does below minimum drop voltage during load transient response. This must always higher than VOUT least amount dropout voltage some margin order device regulate properly. Ground pin. This must connected lowest potential system other pins must higher potential with respect this pin. Enable pin. signal left open this shuts down output. This must tied normal operation. resistor divider from this VOUT ground sets output voltage. minimize error error amplifier, select values resistor dividers less than 10K. 1000pF bypass capacitor connected this reduces output noise. output regulator. minimum 2.2µF with capacitor must connected from this ground insure stability. Output Voltage 1.25V 1.8V 2.5V 2.8V 3.0V 3.3V 3.6V output voltage adjustable device using: 1.25
(Adjustable Only) CBYP (Fixed Only) VOUT
5-PIN SOT-23 IRU1205 IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
Where: Resistor connected from output Resistor connected from
Table Nominal output voltage part number.
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Rev.
IRU1205(PbF IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
BLOCK DIAGRAM
VOUT
THERMAL SHUTDOWN
1.25V
Figure IRU1205 Adjustable output block diagram.
VOUT
CBYP
1.25V
THERMAL SHUTDOWN
Figure IRU1205-18, IRU1205-25, IRU1205-28, IRU1205-30, IRU1205-33 IRU1205-36 Fixed output block diagram.
Rev.
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IRU1205(PbF) IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
(L5) SOT-23 Package 5-Pin
SYMBOL
1.45 0.90 0.15 0.00 1.30 0.90 0.50 0.25 0.20 0.09 3.00 2.80 3.00 2.60 1.75 1.50 0.95 1.90 0.55 0.35
NOTE: MEASUREMENTS MILLIMETERS.
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Rev.
IRU1205(PbF IRU1205-18 IRU1205-25 IRU1205-28 IRU1205-30 IRU1205-33 IRU1205-36
PACKAGE SHIPMENT METHOD
DESIG PACKAGE DESCRIPTION SOT-23 COUNT PARTS TUBE -PARTS REEL 3000 Orientation
Feed Direction Figure
WORLD HEADQUARTERS: Kansas St., Segundo, California 90245, Tel: (310) 252-7105 Fax: (310) 252-7903 Visit www.irf.com sales contact information Data specifications subject change without notice. 8/26/2005
Rev.
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Data Sheet PD94133revA 300mA ULTRA DROPOUT POSITIVE ADJUSTABLE FI

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