IRF IRU1010-18CD 1a low dropout positive fixed 1.8v regulator Datasheet

Data Sheet No. PD94135 revA
IRU1010-18 & (PbF)
1A LOW DROPOUT POSITIVE
FIXED 1.8V REGULATOR
DESCRIPTION
FEATURES
Guaranteed < 1.3V Dropout at Full Load Current
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built-In Thermal Shutdown
Available in SOT-223, D-Pak, Ultra Thin-PakTM
and 8-Pin SOIC Surface-Mount Packages
APPLICATIONS
Low Voltage IC Supply Applications
DSP Core Voltage
8-Lead SOIC (IRU1010-18CS) is also available
LEAD-FREE
The IRU1010-18 is a low dropout three-terminal fixed output regulator with minimum of 1A output current capability. 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 designed to be stable with low cost aluminum capacitors
while maintaining stability with low ESR tantalum caps.
TYPICAL APPLICATION
3.3V
C1
10uF
VIN
3
IRU1010-18
VOUT
Gnd
1.8V / 1A
2
C2
10uF
1
Figure 1 - Typical set-up of the IRU1010-18 in a 3.3V to 1.8V regulator application.
PACKAGE ORDER INFORMATION
Basic Part (Non-Lead Free)
TJ (°C)
0 To 125
2-PIN PLASTIC
TO-252 (D-Pak)
IRU1010-18CD
2-PIN PLASTIC
Ultra Thin-PakTM (P)
IRU1010-18CP
8-PIN PLASTIC
SOIC (S)
IRU1010-18CS
3-PIN PLASTIC
SOT-223 (Y)
IRU1010-18CY
Leadfree Part
TJ (°C)
0 To 125
2-PIN PLASTIC
TO-252 (D-Pak)
Not available
2-PIN PLASTIC
8-PIN PLASTIC
Ultra Thin-PakTM (P)
SOIC (S)
Not available
IRU1010-18CSPbF
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3-PIN PLASTIC
SOT-223 (Y)
Not available
1
IRU1010-18 & (PbF)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) ....................................................
Power Dissipation .....................................................
Storage Temperature Range ......................................
Operating Junction Temperature Range .....................
7V
Internally Limited
-65°C To 150°C
0°C To 125°C
PACKAGE INFORMATION
2-PIN PLASTIC TO-252 (D-Pak)
3
2-PIN ULTRA THIN-PAKTM (P)
VIN
3
VIN
Tab is
VOUT
Tab is
VOUT
1
Gnd
θJA=70°C/W for 0.5" Sq pad
1
Gnd
θJA=70°C/W for 0.5" Sq pad
8-PIN PLASTIC SOIC (S)
VIN
NC
NC
Gnd
1
8
2
7
3
6
4
5
3-PIN PLASTIC SOT-223 (Y)
VOUT
VOUT
VOUT
VOUT
Tab is
VOUT
θJA=55°C/W for 1" Sq pad
3
VIN
2
VOUT
1
Gnd
θJA=90°C/W for 0.4" Sq pad
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over CIN=1µF, VIN=5V, COUT=10µF and TJ=0 to 125 C.
Typical values refer to TJ=25 C.
PARAMETER
Output Voltage
Line Regulation
Load Regulation (Note 1)
Dropout Voltage (Note 2)
Current Limit
Thermal Regulation
Ripple Rejection
Temperature Stability
Long Term Stability
RMS Output Noise
SYM
Vo
TEST CONDITION
Io=10mA, TJ=25 C
Io=10mA
Io=10mA, 4.75V<VIN<7V
10mA<Io<1A
Io=1A
∆Vo=100mV
30ms Pulse, Io=1A
f=120Hz, Co=25µF Tantalum,
Io=0.5A
Io=10mA
TJ=125 C, 1000Hrs
TJ=25 C, 10Hz<f<10KHz
MIN
1.782
1.764
TYP
1.800
1.800
MAX
1.818
1.836
7
17
1.3
UNITS
V
0.01
mV
mV
V
A
%/W
70
0.5
0.3
0.003
dB
%
%
%Vo
1.1
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.
2
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IRU1010-18 & (PbF)
PIN DESCRIPTIONS
PIN#
1
PIN SYMBOL
Gnd
PIN DESCRIPTION
Ground pin. This pin must be connected to ground plane using a low inductance short
connection.
2
VOUT
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.
3
VIN
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
SHUTDOWN
1 Gnd
Figure 2 - Simplified block diagram of the IRU1010-18.
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3
IRU1010-18 & (PbF)
(D) TO-252 Package
2-Pin
K
A
B
C
L
M
7
45
D
J
N
E
O
P
Q
R
G
F
S
H
R1
SYMBOL
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
R1
S
CL
MIN
6.477
5.004
0.686
7.417
9.703
0.635
2.286
MAX
6.731
5.207
0.838
8.179
10.084
0.889
BSC
4.521 4.623
∅1.52 ∅1.62
2.184 2.388
0.762 0.864
1.016 1.118
5.969 6.223
1.016 1.118
0.102
0
0.534 0.686
R0.31 TYP
R0.51 TYP
0.428 0.588
NOTE: ALL MEASUREMENTS
ARE IN MILLIMETERS.
4
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IRU1010-18 & (PbF)
(P) Ultra Thin-PakTM
2-Pin
A
A1
U
E
K
V
B
H
M
L
P
G
D
G1
N
C
R
CL
SYMBOL
A
A1
B
C
D
E
G
G1
H
K
L
M
N
P
R
U
V
MAX
MIN
6.17
5.91
5.79
5.54
6.27
6.02
2.03
1.70
0.79
0.63
0.33
0.17
2.41
2.16
4.70
4.45
9.68
9.42
1.27
0.76
0.13
0.02
1.14
0.89
0.25
0.25
1.19
0.94
6
2
3.30
2.92
5.08 NOM
NOTE: ALL MEASUREMENTS
ARE IN MILLIMETERS.
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5
IRU1010-18 & (PbF)
(S) SOIC Package
8-Pin Surface Mount, Narrow Body
H
A
B
C
E
DETAIL-A
PIN NO. 1
L
D
DETAIL-A
0.38± 0.015 x 45
K
T F
I
J
G
8-PIN
SYMBOL
A
B
C
D
E
F
G
H
I
J
K
L
T
MAX
MIN
4.98
4.80
1.27 BSC
0.53 REF
0.46
0.36
3.99
3.81
1.72
1.52
0.25
0.10
7 BSC
0.19
5.80
0
0.41
1.37
0.25
6.20
8
1.27
1.57
NOTE: ALL MEASUREMENTS
ARE IN MILLIMETERS.
6
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IRU1010-18 & (PbF)
(Y) SOT-223 Package
3-Pin
SYMBOL
A
A1
B
B1
C
D
E
e
e1
H
Q
Q1
Q2
S
T
D
B
E
e
H
S
MIN
1.498
0.02
2.895
0.637
0.239
6.299
3.30
2.209
4.496
6.70
0
7
7
0.838
1.092
MAX
1.702
0.11
3.15
0.85
0.381
6.706
3.708
2.953
4.699
7.30
10
16
16
1.05
1.30
NOTE: ALL MEASUREMENTS
ARE IN MILLIMETERS.
e1
Q1
T
B1
A
Q
C
A1
Q2
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IRU1010-18 & (PbF)
PACKAGE SHIPMENT METHOD
PKG
DESIG
D
P
S
Y
PACKAGE
DESCRIPTION
TO-252, (D-Pak)
Ultra Thin-PakTM
PIN
COUNT
2
2
8
3
SOIC, Narrow Body
SOT-223
1
1
PARTS
PER TUBE
75
75
95
80
1
1
Feed Direction
Figure A
1
1
T&R
Orientation
Fig A
Fig B
Fig C
Fig D
PARTS
PER REEL
2500
2500
2500
2500
1
1
Feed Direction
Figure B
1
1
1
1
Feed Direction
Figure D
Feed Direction
Figure C
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. 8/18/2005
8
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