CYStech Electronics Corp.
1A Low Dropout Positive Voltage Regulator
Spec. No. : C506FP
Issued Date : 2007.11.14
Revised Date :
Page No. : 1/6
PL5033-XXXFP3
Features
●
Description
Adjustable or Fixed Output
The PL5033 series of positive adjustable and fixed
●
Output Current of 1A
regulators are designed to provide 1A with high
●
Low Dropout, 1.4V max at 1A Output Current
efficiency. All internal circuitry is designed to
●
Good Noise Rejection
operate down to 1.4V input to output differential.
●
Output Current Limiting
The product is specifically designed to provide well-
●
Built-in
Thermal Shutdown
regulated supply for low-voltage IC application such
●
Fast Transient Response
as high-speed bus termination and low current 3.3V
logic supply, and other applications such as VGA cards.
Applications
High Efficiency Linear Regulators
●
Post Regulators for Switching Supplies
●
Adjustable Power Supply
●
Typical Application Data
Fixed Voltage Regulator
V
IN
>4.75V
3
TAB
IN
GND
OUT
2
V
OUT
=3.3V
C1
10μF Tant
1
+
C2
10μF Tant.Min
Adjustable Voltage Regulator
V
IN
>4.75V
3
IN
TAB
ADJ
2
OUT
V
OUT
=3.45V
C1
10μF, Tant
+
1
+
C2
10μF Tant.Min
R2
232 Ohm,1%
V
OUT
=V
REF
×
(1+R2/R1)+I
ADJ
×
R2
Notes:
1) C1 needed if device is far from filter capacitors
2) C2 minimum value required for stability
PL5033-XXXFP
CYStek Product Specification
CYStech Electronics Corp.
Package Information
TO-220FP
Pin
1
2
3
Name
ADJ/GND
OUTPUT
INPUT
Spec. No. : C506FP
Issued Date : 2007.11.14
Revised Date :
Page No. : 2/6
G O I
Absolute Maximum Ratings
Symbol
P
D
V
IN
T
OPR
T
STG
T
MJ
Parameter
Power Dissipation
Input Voltage
Operating Junction Temperature Range
Storage Temperature
Maximum Junction Temperature
Ratings
Internally Limited
-0.3 ~ +15
0 ~ +125
-65 ~ +150
150
Units
W
V
℃
℃
℃
Device Selection Guide
Device
PL5033-ADJ
PL5033-1.5
PL5033-1.8
PL5033-2.5
PL5033-3.3
PL5033-5.0
Output Voltage
Adjustable
1.5V
1.8V
2.5V
3.3V
5.0V
PL5033-XXXFP
CYStek Product Specification
CYStech Electronics Corp.
Block Diagram
Spec. No. : C506FP
Issued Date : 2007.11.14
Revised Date :
Page No. : 3/6
Electrical Characteristics
@ I
O
=10mA,T
J
=25℃, unless otherwise specified
Parameter
Reference voltage
Output Voltage
Device
PL5033-1.5
PL5033-1.8
PL5033-2.5
PL5033-3.3
PL5033-5.0
All version
PL5033-ADJ
Test Conditions
Min
1.470
1.764
2.450
3.235
4.900
-
-
-
-
-
-
-
-
-
-
Typ
1.500
1.800
2.500
3.300
5.000
-
-
12
15
20
26
40
1.06
1.16
1.24
Max
1.530
1.836
2.550
3.365
5.100
0.2
1
15
18
25
33
50
1.2
1.25
1.4
Units
V
V
V
V
V
V
%
%
mV
mV
mV
mV
mV
V
V
V
A
mA
μA
mA
Adj version V
IN-
V
OUT
=1.5V
3.0V≤V
IN
≤12V
3.3V≤V
IN
≤12V
4.0V≤V
IN
≤12V
4.8V≤V
IN
≤12V
6.5V≤V
IN
≤12V
V
OUT
+1.5V≤V
IN
≤12V
V
IN
=3.3V, Vadj=0, 10mA≤I
O
≤1A
PL5033-1.5 V
IN
=3.0V, 0mA≤I
O
≤1A
PL5033-1.8 V
IN
=3.3V, 0mA≤I
O
≤1A
PL5033-2.5 V
IN
=4.0V, 0mA≤I
O
≤1A
PL5033-3.3 V
IN
=5.0V, 0mA≤I
O
≤1A
PL5033-5.0 V
IN
=8.0V, 0mA≤I
O
≤1A
I
O
=0.1A, Vin= Vout+1.3V
1.225 1.250 1.275
Line Regulation
Load Regulation
(Note 1, 2)
Dropout Voltage
(V
IN
-V
OUT
)
Current Limit
Minimum Load
Current
Adjust Pin Current
Quiescent Current
PL5033-XXXFP
All version
All version
Adj version
I
O
=0.5A, Vin= Vout+1.3V
I
O
=1.0A, Vin= Vout+1.3V
V
IN
-V
OUT
=5V
V
IN
=5V
1.1
-
-
-
-
5
50
-
-
10
100
12
Adj version V
IN
=12V, I
O
=10mA
Fixed version V
IN
=12V, I
O
=0mA
CYStek Product Specification
CYStech Electronics Corp.
Thermal Regulation
Ripple Rejection
Temperature Stability
Thermal Resistance,
Junction to Ambient(
No heat sink, no air
flow)
Thermal Resistance,
Junction to Case
All version
All version
All version
All version
All version
T
A
=25℃, 30ms pulse
f=120Hz, V
IN
=V
OUT
+3V, I
O
= 1A,
C
OUT
=25μF tantalum
I
O
= 10mA
No heat sink, no air flow
Spec. No. : C506FP
Issued Date : 2007.11.14
Revised Date :
Page No. : 4/6
-
-
-
-
-
0.008
60
0.5
98
15
0.04
70
-
-
-
%/W
dB
%
℃/W
℃/W
Control Circuitry/ Power transistor
Note : 1.See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at
a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead 1/18” from the
package.
2. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the
difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full
input/output range.
PL5033-XXXFP
CYStek Product Specification
CYStech Electronics Corp.
Characteristic Curves
Spec. No. : C506FP
Issued Date : 2007.11.14
Revised Date :
Page No. : 5/6
PL5033-XXXFP
CYStek Product Specification
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