IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 1.4 V DROPOUT, PSFM3, TO-220AB, 3 PIN, Fixed Positive Single Output LDO Regulator
SIX1084CT1.8 Parametric
Parameter Name
Attribute value
Is it lead-free?
Contains lead
Is it Rohs certified?
incompatible
Maker
Vishay
Parts packaging code
TO-220AB
package instruction
TO-220,
Contacts
3
Reach Compliance Code
unknown
ECCN code
EAR99
Maximum drop-back voltage 1
1.4 V
Maximum input voltage
7 V
Minimum input voltage
2.65 V
JESD-30 code
R-PSFM-T3
JESD-609 code
e0
Number of functions
1
Number of terminals
3
Working temperatureTJ-Max
125 °C
Working temperature TJ-Min
Maximum output voltage 1
1.82 V
Minimum output voltage 1
1.78 V
Nominal output voltage 1
1.8 V
Package body material
PLASTIC/EPOXY
encapsulated code
TO-220
Package shape
RECTANGULAR
Package form
FLANGE MOUNT
Peak Reflow Temperature (Celsius)
NOT SPECIFIED
Certification status
Not Qualified
Regulator type
FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount
NO
Terminal surface
TIN LEAD
Terminal form
THROUGH-HOLE
Terminal location
SINGLE
Maximum time at peak reflow temperature
NOT SPECIFIED
SIX1084CT1.8 Preview
Six1084
New Product
Vishay
formerly General Semiconductor
5A Low Dropout Positive Adjustable Regulator
TO-252
(DPak)
TO-220AB
TO-263AB
(D
2
Pak)
2
1
3
2
1
3
2
1
3
Six1084CE
Six1084CT
Six1084CM
Pin Definition
1.
Adjust/Gnd.
2.
V
out (tab)
3.
V
in
Description
The Six1084 is a low dropout three terminal regulator with 5A
output current capability. The output voltage is adjustable
with the use of a resistor divider. For fixed output voltage ver-
sions, the output voltage is internally set at 1.8V, 2.5V, or
3.3V. Dropout is guaranteed at a maximum of 1.4V at max-
imum output current. Its low dropout voltage and fast tran-
sient response make it ideal for low voltage microprocessor
applications. Internal current and thermal limiting provides
protection against any overload condition that would create
excessive junction temperatures.
Features
• Dropout Voltage 1.3V at 5A Output Current
• Fast Transient Response
• Line Regulation typically at 0.015%
• Load Regulation typically at 0.1%
• Internal thermal and current limiting
• Adjustable Output Voltage or Fixed 1.8V, 2.5V, 3.3V
• Standard 3-Pin Power Packages
Applications
• Post Regulator for Switching Supply
• Microprocessor Power Supplies
• Constant-Current Regulators
• Motherboard I/O Power Supplies
Functional Block Diagram
V
IN
Current
Amp
Mechanical Data
Case:
TO-220AB, TO-263AB (D
2
PAK),
TO-252 (DPAK)
High temperature soldering guaranteed:
260°C/10 seconds at terminals
V
REF
1.25V
55µA
+
+
GM
--
Thermal
Limit
Current
Limit
V
OUT
Case outlines are on the back page
For
fixed
voltage
device
ADJ
GND
Document Number 74800
26-Mar-02
www.vishay.com
1
Six1084
Vishay
formerly General Semiconductor
Maximum Ratings and Thermal Characteristics
Parameter
Vin Pin to ADJ/GND Pin
Thermal Resistance –
Junction to Case
Operating Junction Temperature Range
Storage Temperature Range
TO-220AB
TO-252
TO-263AB
Symbol
Vin
R
θJC
T
J
T
stg
(2)
(T
A
= 25°C unless otherwise noted)
Value
7
3.0
8.0
3.0
0 to +125
–65 to 150
Unit
V
°C/W
°C
°C
Electrical Characteristics
(1)
Parameter
T
J
= 25°C
, V
IN
= 5V, I
o
= 10mA unless otherwise noted.
Symbol
Test Conditions
T
J
= 25°C
0°C
≤
T
J
≤
125°C
2.65V
≤
V
IN
≤
7V
10mA
≤
I
o
≤
5A
Six1084-1.8
V
IN
= 5V
Six1084-2.5
V
IN
= 5V
Six1084-3.3
V
IN
= 7V
Six1084
0°C
≤
T
J
≤
125°C
2.65V
≤
V
IN
≤
7V
10mA
≤
I
o
≤
5A
2.65V
≤
V
IN
≤
7V
T
J
= 25°C
0°C
≤
T
J
≤
125°C
10mA
≤
I
o
≤
5A
T
J
= 25°C
0°C
≤
T
J
≤
125°C
0°C
≤
T
J
≤
125°C
I
o
= 5A
I
o
= 3A
I
o
= 1A
0°C
≤
T
J
≤
125°C
2.65
≤
Vin
≤
7V
10mA
≤
I
o
≤
5A
0°C
≤
T
J
≤
125°C
2.65
≤
Vin
≤
7V
10mA
≤
I
o
≤
5A
0°C
≤
T
J
≤
125°C
I
o
= 0.5A, 0°C
≤
T
J
≤
125°C
0°C
≤
T
J
≤
125°C
Min
1.238
1.225
Typ
1.250
1.250
Max
1.262
1.275
Unit
Reference Voltage
V
REF
V
Output Voltage
V
OUT
1.78
2.47
3.26
0.98V
N
1.8
2.5
3.3
V
N
1.82
2.53
3.33
1.02V
N
V
Line Regulation
REG
line
0.015
0.035
0.1
0.2
1.3
1.23
1.15
5.0
–
6.0
55
0.2
0.2
0.3
0.4
1.4
1.32
1.25
–
120
% V
O
Load Regulation
REG
load
% V
O
Dropout Voltage
V
DROP
V
Output Current
Adjust Pin Current
I
o
I
adj
A
µA
Adjust Pin Current Change
Temperature Stability
Min. Load Current Adjustable Version
∆I
adj
T
S
I
LMIN
–
–
–
0.2
0.8
3
5
–
10
µA
%V
O
mA
www.vishay.com
2
Document Number 74800
26-Mar-02
Six1084
Vishay
formerly General Semiconductor
Electrical Characteristics
(con’t.)
(1)
Parameter
Quiescent Current
Fixed Voltage Version
RMS Output Noise
Ripple Rejection Ratio
Thermal Regulation
Long Term Stability
Symbol
I
Q
N
RR
R
TH
T
J
= 25°C
(2)
, V
IN
= 5V, I
o
= 10mA unless otherwise noted.
Test Conditions
0°C
≤
T
J
≤
125°C
10H
Z
≤
f
≤
10 kH
Z
f = 120 H
Z
, C
O
= 25µF
C
adj
= 25µF
T
A
= 25°C, 30ms Pulse
T
A
= 125°C, 1000 Hrs
Min
–
–
60
–
–
Typ
10
0.003
68
0.02
0.3
Max
14
–
–
0.05
–
Unit
mA
%V
O
dB
%/W
%V
O
Notes:
(1) All parameters, except nominal output voltage are specified for the variable voltage version, allowing a wider V
in
Range.
The specified limits also apply for the fixed voltage versions over the allowable input voltage range: Six1084-1.8 (3.2V - 7.0V), Six1084-2.5 (3.9V - 7.0V),
Six1084-3.3 (4.75V - 7.0V).
(2) To maintain the specified junction temperatures, low duty cycle pulse testing is required for most parameters.
Typical Application Circuit
V
IN
5V
3
2
V
IN
5V
3
2
R1
125Ω
1%
R2
205Ω
1%
V
OUT
3.3V
Six1084-1.8
Six1084-2.5
Six1084-3.3
1
V
OUT
Six1084
1 ADJ
V
REF
C1
10µF
+
+
C2
10µF
C1
10µF
+
+
C2
10µF
Fixed Voltage Regulator
Adjustable Voltage Regulator
Notes:
V
REF
= V
OUT
– V
ADJ
= 1.25V (typ.)
V
OUT
= V
REF
x (1+R2/R1) + I
ADJ
x R2
I
ADJ
= 55µA (typ.)
(1) C1 needed if device is far away from filter capacitors
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