IRU1015-33CD [INFINEON]
1.5A LOW DROPOUT POSITIVE FIXED 3.3V REGULATOR(85.72 k) ; 1.5A低压差正，固定3.3V稳压器（ 85.72 K）\n
| 型号： | IRU1015-33CD |
| 厂家： | 
Infineon |
| 描述： | 1.5A LOW DROPOUT POSITIVE FIXED 3.3V REGULATOR(85.72 k)
|
| 文件： | 总4页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet No. PD94123
IRU1015-33
1.5A LOW DROPOUT POSITIVE
FIXED 3.3V REGULATOR
DESCRIPTION
FEATURES
The IRU1015-33 is a low dropout three terminal fixed
3.3V output regulator with minimum of 1.5A output cur-
rent capability. This product is specifically designed to
provide well regulated supply for low voltage IC applica-
tions requiring 3.3V output. The IRU1015-33 is guaran-
teed 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.
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Output Current Limiting
Built-In Thermal Shutdown
APPLICATIONS
Standard 3.3V Chip Set and Logic Applications
TYPICAL APPLICATION
5V
C1
100uF
Vin
Vout
Gnd
3
2
1
3.3V / 1.5A
IRU1015-33
C2
100uF
Figure 1 - Typical application of IRU1015-33
PACKAGE ORDER INFORMATION
Tj (°C)
3-PIN PLASTIC
3-PIN PLASTIC
2-PIN PLASTIC
Ultra Thin-Pak (P)
IRU1015-33CP
2-PIN PLASTIC
TO-252 (D-Pak)
IRU1015-33CD
TO-220 (T)
TO-263 (M)
0 To 150
IRU1015-33CT
IRU1015-33CM
Rev. 1.1
06/29/01
1
IRU1015-33
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)
FRONT VIEW
2-PIN PLASTIC TO-252 (D-Pak)
FRONT VIEW
FRONT VIEW
3
FRONT VIEW
3
3
3
Vin
Vin
Vin
Vin
Tab is
Vout
Tab is
Vout
Tab is
Vout
Tab is
Vout
2
1
Vout
Gnd
2
1
Vout
Gnd
1
1
Gnd
Gnd
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
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Cin=1µF, Cout=10µF, and Tj=0 to 150ꢀC.
Typical values refer to Tj=25ꢀC.
PARAMETER
SYM
TEST CONDITION
Io=10mA, Tj=25ꢀC, Vin=5V
Io=10mA, Vin=5V
Io=10mA, 4.7V<Vin<7V
Vin=5V, Vadj=0, 10mA<Io<1.5A
Note 2, Io=1.5A
Vin=5V, dVo=100mV
Vin=5V
MIN
TYP
MAX
UNITS
Output Voltage
Vo
3.267 3.300 3.333
V
3.234 3.300 3.366
Line Regulation
0.2
0.4
1.3
%
%
Load Regulation (Note 1)
Dropout Voltage (Note 2)
Current Limit
∆Vo
1.1
5
V
1.6
60
A
Minimum Load Current
(Note 3)
Thermal Regulation
Ripple Rejection
10
mA
30ms Pulse, Vin-Vo=3V, Io=1.5A
f=120Hz, Co=25µF Tantalum,
Io=0.75A, Vin-Vo=3V
Io=10mA, Vin-Vo=1.5V, Tj=25ꢀC
Vin=5V, Vadj=0V, Io=10mA
Tj=125ꢀC, 1000Hrs
0.01
0.02
%/W
70
0.2
dB
µA
%
Adjust Pin Current Change
Temperature Stability
Long Term Stability
5
1
0.5
0.3
%
RMS Output Noise
Tj=25ꢀC, 10Hz<f<10KHz
0.003
%Vo
Note 1: Low duty cycle pulse testing with Kelvin con- Note 3: Minimum load current is defined as the mini-
nections is required in order to maintain accurate data. mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
Note 2: Dropout voltage is defined as the minimum dif- dividers are selected such that this current is automati-
ferential voltage between Vin and Vout required to main- cally maintained.
tain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
Rev. 1.1
2
06/29/01
IRU1015-33
PIN DESCRIPTIONS
PIN # PIN SYMBOL PIN DESCRIPTION
1
Gnd
This pin must be connected to ground plane using a low inductance short connection.
2
Vout
The output of the regulator. A minimum of 10µF capacitor must be connected from this
pin to ground to insure stability.
3
Vin
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 drop out
voltage during the load transient response. This pin must always be 1.3V higher than Vout
in order for the device to regulate properly.
BLOCK DIAGRAM
Vin 3
2 Vout
+
+
1.25V
CURRENT
LIMIT
THERMAL
SHUTDOWN
1 Gnd
1015-33blk1-1.0
Figure 2 - Simplified block diagram of the IRU1015-33
APPLICATION INFORMATION
Stability
The IRU1015-33 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 typi-
cal ESR in the range of 50 to 100mΩ and an output capacitance of 500 to 1000µF. Fortunately as the capacitance
increases, the ESR decreases resulting in a fixed RC time constant. The IRU1015-33 takes advantage of this
phenomena in making the overall regulator loop stable. For most applications a minimum of 100µF aluminum
electrolytic capacitor such as Sanyo MVGX series, Panasonic FA series as well as the Nichicon PL series insures
both stability and good transient response.
Rev. 1.1
3
06/29/01
IRU1015-33
Notes
IR WORLD HEADQUARTERS : 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 02/01
Rev. 1.1
06/29/01
4
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