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IRU1010-18 [INFINEON]

1A LOW DROPOUT POSITIVE FIXED 1.8V REGULATOR; 1A低压差正固定的1.8V稳压器
IRU1010-18
型号： IRU1010-18
厂家： Infineon    Infineon
描述：

1A LOW DROPOUT POSITIVE FIXED 1.8V REGULATOR
1A低压差正固定的1.8V稳压器

稳压器
文件： 总4页 (文件大小：79K)
中文：  中文翻译
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Data Sheet No. PD94135  
IRU1010-18  
1A LOW DROPOUT POSITIVE  
FIXED 1.8V REGULATOR  
FEATURES  
DESCRIPTION  
Guaranteed < 1.3V Dropout at Full Load Current  
Fast Transient Response  
The IRU1010-18 is a low dropout three-terminal fixed out-  
put regulator with minimum of 1A output current capabil-  
ity. This product is specifically designed to provide well  
regulated supply for low voltage IC applications as well  
as generating clock supply for PC applications. The  
IRU1010-18 is guaranteed to have <1.3V dropout at full  
load current making it ideal to provide well regulated with  
3.8V input supply. The IRU1010-18 is specifically de-  
signed to be stable with low cost aluminum capacitors  
while maintaining stability with low ESR tantalum caps.  
1% Voltage Reference Initial Accuracy  
Built-In Thermal Shutdown  
Available in SOT-223, D-Pak, Ultra Thin-Pak and  
8-Pin SOIC Surface-Mount Packages  
APPLICATIONS  
Low Voltage IC Supply Applications  
DSP Core Voltage  
TYPICAL APPLICATION  
3.3V  
C1  
10uF  
Vin  
3
IRU1010-18  
Vout  
2
1.8V / 1A  
C2  
10uF  
Gnd  
1
Figure 1 - Typical set-up of the IRU1010-18 in a 3.3V to 1.8V regulator application.  
PACKAGE ORDER INFORMATION  
Tj (°C)  
2-PIN PLASTIC  
TO-252 (D-Pak)  
IRU1010-18CD  
3-PIN PLASTIC  
2-PIN PLASTIC  
Ultra Thin-Pak (P)  
IRU1010-18CP  
8-PIN PLASTIC  
SOIC (S)  
SOT-223 (Y)  
0 To 125  
IRU1010-18CY  
IRU1010-18CS  
Rev. 1.2  
07/26/01  
1
IRU1010-18  
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 125°C  
PACKAGE INFORMATION  
2-PIN PLASTIC TO-252 (D-Pak)  
3-PIN PLASTIC SO-223 (Y)  
2-PIN ULTRA THIN-PAK (P)  
8-PIN PLASTIC SOIC (S)  
FRONT VIEW  
FRONT VIEW  
TOP VIEW  
TOP VIEW  
3
3
Vin  
Vin  
1
2
3
4
8
7
6
5
3
2
1
Vin  
NC  
Vout  
Vout  
Vout  
Vout  
Vin  
Tab is  
Vout  
Tab is  
Vout  
Tab is  
Vout  
Vout  
Gnd  
NC  
Gnd  
1
1
Gnd  
Gnd  
θJA=70°C/W for 0.5" Sq pad  
θJA=90°C/W for 0.4" Sq pad  
θJA=70°C/W for 0.5" Sq pad  
θJA=55°C/W for 1" Sq pad  
ELECTRICAL SPECIFICATIONS  
Unless otherwise specified, these specifications apply over Cin=1µF, Vin=5V, Cout=10µF and Tj=0 to 125ꢀC.  
Typical values refer to Tj=25ꢀC.  
PARAMETER  
SYM  
Vo  
TEST CONDITION  
Io=10mA, Tj=25ꢀC  
Io=10mA  
MIN  
TYP  
MAX  
UNITS  
Output Voltage  
1.782 1.800 1.818  
V
1.764 1.800 1.836  
Line Regulation  
Io=10mA, 4.75V<Vin<7V  
10mA<Io<1A  
7
mV  
mV  
V
A
%/W  
Load Regulation (Note 1)  
Dropout Voltage (Note 2)  
Current Limit  
17  
Io=1A  
∆Vo=100mV  
30ms Pulse, Io=1A  
f=120Hz, Co=25µF Tantalum,  
Io=0.5A  
Io=10mA  
Tj=125ꢀC, 1000Hrs  
Tj=25ꢀC, 10Hz<f<10KHz  
1.3  
1.1  
Thermal Regulation  
Ripple Rejection  
0.01  
70  
0.5  
dB  
%
Temperature Stability  
Long Term Stability  
RMS Output Noise  
0.3  
%
0.003  
%Vo  
Note 1: Low duty cycle pulse testing with Kelvin connections 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.  
Rev. 1.2  
2
07/26/01  
IRU1010-18  
PIN DESCRIPTIONS  
PIN# PIN SYMBOL  
PIN DESCRIPTION  
Ground pin. This pin must be connected to ground plane using a low inductance short  
1
2
3
Gnd  
Vout  
Vin  
connection.  
The output of the regulator. This pin is also connected to the tab of the package. An output  
capacitor must be connected to this pin to insure stability of the regulator.  
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 1.3V higher than Vout in  
order for the device to regulate properly.  
BLOCK DIAGRAM  
Vin 3  
2 Vout  
+
+
1.25V  
CURRENT  
LIMIT  
THERMAL  
1 Gnd  
SHUTDOWN  
1010-18blk1-1.0  
Figure 2 - Simplified block diagram of the IRU1010-18.  
Rev. 1.2  
07/26/01  
3
Notes  
IRU1010-18  
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. 1.2  
07/26/01  
4

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