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1A Adj LDO Linear Regulator in a TO-252 (D-PAK) 2-Leads package
International
TOR Rectifier
FEATU RES
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-ln Thermal Shutdown
Available in SOT-223, D-Pak, Ultra Thin-PakTM
and 8-Pin SOIC Surface-Mount Packages
APPLICATIONS
El VGA & Sound Card Applications
EI Low Voltage High Speed Termination Applications
EI Standard 3.3V Chip Set and Logic Applications
Data Sheet No. PD94119
IRU1010
IA LOW DROPOUT POSITIVE
ADJUSTABLE REGULATOR
DESCRIPTION
The lRU1010 is a low dropout, three-terminal adjustable
regulator with minimum of IA output current capability.
This product is specifically designed to provide well regu-
lated supply for low voltage IC applications such as high
speed bus termination and low current 3.3V logic sup-
ply. The IRU1010 is also well suited for other applica-
tions such as VGA and sound cards. The lRU1010 is
guaranteed to have <1.3V dropout at full load current
making it ideal to provide well regulated outputs of 2.5V
to 3.6V with 4.75V to 7V input supply.
TYPICAL APPLICATION
“L C1 l
10uF Cf]:
VIN :51-
IRU101O
Vow 2 a N. 2.85V/ IA
Ad] 1 F-7 C2
R2 22uF
Figure 1 - Typical application of lRU1010 in a 5V to 2.85V SCSI termination regulator.
PACKAGE ORDER INFORMATION
To (°C) 2-PlN PLASTIC 2-PIN PLASTIC 8-PIN PLASTIC 3-PlN PLASTIC
TO-252 (D-Pak) Ultra Thin-PakTM (P) SOIC (S) SOT-223 (Y)
0 To 150 IRU1010CD IRU1010CP IRU1010CS IRU101OCY
Rev. 1.7
02/03/03
IRU1010
International
TOR Rectifier
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V m) .................................................... 7V
Power Dissipation _.................................................... Internally Limited
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range ..................... 0°C To 150°C
PACKAGE INFORMATION
2-PIN PLASTIC TO-252 (D-Pak) 2-PIN ULTRA THIN-PAKTM (P) 8-PIN PLASTIC SOIC (S) 3-PIN PLASTIC SOT-223 (Y)
:RONTVIEW FRONT VIEW TOP VIEV\. TOPViEVV
3 =)VIN 3 Cl VIN VINE EVOUT 3|le
Tab is Tab is NC [E El Vour .
J l Tab Is
W m NCE Ewan VME EV”
1:Adj 13Adj AdJ'E EVOUT El/ut'
9JA=7O°CIW for 0.5" Sq pad 9JA=70°CIW for 0.5" Sq pad 0JA=55°CIW for 1" Sq pad 9JA=90°CAN for 0.4" Sq pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Cm=1pLF, Com=10ptF, and TJ=O to 150°C.
Typical values refer to TJ=25°C.
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Reference Voltage VREF lo=10mA, TJ=25°C, (VIN-VO)=1.5V 1.238 1.250 1.262 V
lo=10mA, (Vm-Vo)=1.5V 1.225 1.250 1.275
Line Regulation lo=10mA, 1.3V<(V|N-VO)<7V 0.2 %
Load Regulation (Note 1) V|N=3.3V, VADJ=0, 10mA
Dropout Voltage (Note 2) AVo Note 2 , Io=1A 1.1 1.3 V
Current Limit Vm=3.3V, AVo=100mV 1.1 A
Minimum Load Current (Note 3) Vm=3.3V, VADJ=0V 5 10 mA
Thermal Regulation 30ms Pulse, VlN-V0=3V, |o=1A 0.01 0.02 %/W
Ripple Rejection f=120Hz, Co=25wF Tantalum,
lo=0.5A, VIN-V0=3V 60 70 dB
Adjust Pin Current IADJ lo=10mA, 1hN-Vo=1.51/, TJ=25°C,
lo=10mA, Vm-Vo=1.5V 55 120 wA
Adjust Pin Current Change lo=10mA, VlN-V0=1.5V, TJ=25°C 0.2 5 p.A
Temperature Stability V|N=3.3V, VADJ=0V, lo=10mA 0.5 %
Long Term Stability TJ=125°C, 1000Hrs 0.3 1 %
RMS Output Noise TJ=25°C, 10HzNote I: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
Note 3: Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically, the resistor
ferential voltage between VIN and Vow required to main- tains this current.
tain regulation at VOUT. It is measured when the output
voltage drops 1% below its nominal value.
dividers are selected such that it automatically main-
Rev. 1.7
02/03/03
