International Rectifier IRU1015-33CT, IRU1015-33CP, IRU1015-33CM, IRU1015-33CD Datasheet
IRU1015-33
1
Rev. 1.1
06/29/01
TYPICAL APPLICATION
DESCRIPTION
The IRU1015-33 is a low dropout three terminal fixed
3.3V output regulator with minimum of 1.5A output current capability. This product is specifically designed to
provide well regulated supply for low voltage IC applications requiring 3.3V output. The IRU1015-33 is guaranteed to have <1.3V dropout at full load current making it
ideal to provide well regulated output with supply voltage
as low as 4.6V input.
1.5A LOW DROPOUT POSITIVE
FIXED 3.3V REGULATOR
Tj (°C) 3-PIN PLASTIC 3-PIN PLASTIC 2-PIN PLASTIC 2-PIN PLASTIC
TO-220 (T) TO-263 (M) Ultra Thin-Pak (P) TO-252 (D-Pak)
0 To 150 IRU1015-33CT IRU1015-33CM IRU1015-33CP IRU1015-33CD
Figure 1 - Typical application of IRU1015-33
Data Sheet No. PD94123
5V
3.3V / 1.5A
C1
100uF
C2
100uF
IRU1015-33
1
2
3
Vout
Gnd
Vin
FEATURES
APPLICATIONS
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Output Current Limiting
Built-In Thermal Shutdown
Standard 3.3V Chip Set and Logic Applications
PACKAGE ORDER INFORMATION
IRU1015-33
2
Rev. 1.1
06/29/01
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) .................................................... 7V
Power Dissipation ..................................................... Internally Limited
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range ..................... 0°C To 150°C
PACKAGE INFORMATION
3-PIN PLASTIC TO-220 (T) 3-PIN PLASTIC TO-263 (M) 2-PIN PLASTIC ULTRA THIN-PAK(P) 2-PIN PLASTIC TO-252 (D-Pak)
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Output Voltage Vo Io=10mA, Tj=25!C, Vin=5V 3.267 3.300 3.333 V
Io=10mA, Vin=5V 3.234 3.300 3.366
Line Regulation Io=10mA, 4.7V<Vin<7V 0.2 %
Load Regulation (Note 1) Vin=5V, Vadj=0, 10mA<Io<1.5A 0.4 %
Dropout Voltage (Note 2) ∆Vo Note 2, Io=1.5A 1.1 1.3 V
Current Limit Vin=5V, dVo=100mV 1.6 A
Minimum Load Current Vin=5V 5 10 mA
(Note 3)
Thermal Regulation 30ms Pulse, Vin-Vo=3V, Io=1.5A 0.01 0.02 %/W
Ripple Rejection f=120Hz, Co=25µF Tantalum,
Io=0.75A, Vin-Vo=3V 60 70 dB
Adjust Pin Current Change Io=10mA, Vin-Vo=1.5V, Tj=25!C 0.2 5 µA
Temperature Stability Vin=5V, Vadj=0V, Io=10mA 0.5 %
Long Term Stability Tj=125!C, 1000Hrs 0.3 1 %
RMS Output Noise Tj=25!C, 10Hz<f<10KHz 0.003 %Vo
Gnd
Vou t
Vin
Tab is
Vou t
FRONT VIEW
1
2
3
Gnd
Vin
Tab is
Vout
FRONT VIEW
1
3
Gnd
Vin
Tab is
Vout
1
3
FRONT VIEW
Gnd
Tab is
Vout
Vin
Vout
1
2
3
FRONT VIEW
θJT=2.7°C/W θJA=60°C/W θJA=35°C/W for 1" Square pad θJA=70°C/W for 1" Square pad θJA=70°C/W for 0.5" Sq pad
Unless otherwise specified, these specifications apply over Cin=1µF, Cout=10µF, and Tj=0 to 150!C.
Typical values refer to Tj=25!C.
ELECTRICAL SPECIFICATIONS
Note 1: 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 differential voltage between Vin and Vout required to maintain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
Note 3: Minimum 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 this current is automatically maintained.
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