For assistance or to order, call
(800) 531-5782
PT5500
Series
Features
•
•
•
•
•
•
•
ADVANCED INFORMATION
3 AMP ADJUSTABLE LOW-VOLTAGE
INTEGRATED SWITCHING REGULATOR
Preliminary 6/2/2000
ving
e-Sa
Spac
New ackage
P
Description
The PT5500 is a new series of high perfor-
mance 3.0 Amp, 5-pin Integrated Switching
Regulators (ISRs). This ISR operates from
input voltages as low as 3.0V to provide a
lower voltage power source for the latest
low-voltage logic IC’s. Features include
output voltage adjustment, inhibit function,
and short circuit protection. Only one ex-
ternal capacitor is required for proper
operation.
Single-Device: 5V/3.3V Input
90% Efficiency
Small Footprint
New 5-pin Copper Package
Adjustable Output Voltage
Standby Function
Short Circuit Protection
(Patent pending on package assembly)
Standard Application
INH
1
5
Pin-Out Information
V
O
ADJ
Ordering Information
PT5501!
PT5502!
PT5503!
PT5504!
PT5505!
= +3.3 Volts
= +2.5 Volts
= +2.0 Volts
= +1.8 Volts
= +1.5 Volts
Pin Function
1
2
3
4
5
Inhibit
V
in
GND
V
out
V
out
Adjust
V
IN
2
PT5500
3
4
V
OUT
C1
GND
C2
+
PT Series Suffix
(PT1234X)
GND
For Inhibit pin:
Open = output enabled
Ground = output disabled
C
1
= Optional 1µF ceramic
C
2
= Required 100µF electrolytic
(1)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
Current Limit
Input Voltage Range
Output Voltage T
olerance
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
with C
2
= 100µF
Efficiency
Symbols
I
o
I
cl
V
in
∆V
o
Reg
line
Reg
load
V
n
t
tr
V
os
η
Conditions
Over V
in
range
V
in
=5V
0.1A
≤
I
o
≤
I
o
max
V
in
=5V, I
o
=I
o
max
T
a
=-40°C to +85°C
I
o
=I
o
max, Over V
in
range
V
in
=5V, 0.1A≤ Io
≤Iomax
V
in
=5V, I
o
=I
o
max
I
o
step between 1.5A and 3.0A
V
o
over/undershoot
V
in
=5V, I
o
=Iomax
PT5501
PT5502
PT5503
PT5504
PT5505
V
o
=3.3V
V
o
≤2.5V
V
o
≥2.5V
V
o
<2.5V
Min
0.1
(2)
—
4.5
3.1
—
—
—
—
—
—
—
—
—
—
—
—
—
–40
(4)
-40
—
—
—
6.5
(For dimensions and PC board layout,
see Package Styles 510 and 520.)
PT5500 SERIES
Typ
—
5.0
—
—
—
±6.0
±10
45
200
150
90
87
85
83
81
350
(3)
—
—
500
15
—
Max
3.0
—
5.5
5.5
50
35
±10
±25
—
—
—
—
—
—
—
—
—
+85
(5)
+125
—
—
grams
Units
A
A
V
mV
mV
mV
mV
µSec
mV
%
Switching Frequency
Absolute Maximum
Operating T
emperature Range
Storage T
emperature
Mechanical Shock
Mechanical Vibration
Weight
ƒ
o
T
a
T
s
Over V
in
range, 0.1A≤ I
o
≤
I
o
max
Over V
in
range
—
Per Mil-STD-883D, Method 2002.3 , 1 msec,
Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
kHz
°C
°C
G’s
G’s
—
Notes:
(1)
(2)
(3)
(4)
(5)
The PT5500 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.
The ISR will operate down to no load with reduced specifications.
This is a typical value only. The switching frequency will vary with input voltage.
For operation below 0°C, the output capacitor C
2
must have stable characteristics. Use either a low ESR tantalum or Oscon® capacitor.
See SOA curves or consult factory for the appropriate derating.
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.ti.com/powertrends
For assistance or to order, call
(800) 531-5782
PT5500
CHARACTERISTIC
DATA
Series
Performance Data @V
in
=5.0V
(See Note A)
Efficiency vs Output Current
90
90
Performance Data @V
in
=3.3V
(See Note A)
Efficiency vs Output Current
80
Efficiency - %
70
PT5501
PT5502
PT5504
Efficiency - %
80
70
PT5502
PT5504
60
60
50
40
0
0.5
1
1.5
2
2.5
3
50
0
0.5
1
1.5
2
2.5
3
Iout (A)
Iout (A)
Ripple vs Output Current
50
50
Ripple vs Output Current
40
40
Ripple - mV
30
Ripple - mV
20
PT5501
PT5502
PT5504
30
PT5502
PT5504
20
10
10
0
0
0.5
1
1.5
2
2.5
3
0
0
0.5
1
1.5
2
2.5
3
Iout (A)
Iout (A)
Power Dissipation vs Output Current
1.5
1.5
Power Dissipation vs Output Current
1.25
1.25
Pd - Watts
Pd - Watts
1
1
V
in
0.75
V
in
0.75
5.0V
3.3V
0.5
0.5
0.25
0.25
0
0
0.5
1
1.5
2
2.5
3
0
0
0.5
1
1.5
2
2.5
3
Iout (A)
Iout (A)
Safe Operating Area @V
in
=5.0V
(See Note B)
90.0
80.0
Safe Operating Area @V
in
=3.3V
(See Note B)
90.0
Ambient Temperature ( C)
70.0
60.0
50.0
40.0
30.0
20.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Airflow
200LFM
120LFM
60LFM
Nat conv
Ambient Temperature ( C)
80.0
70.0
Airflow
200LFM
120LFM
60LFM
Nat conv
60.0
50.0
40.0
30.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Iout (A)
Iout (A)
Note A:
All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note B:
Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.ti.com/powertrends
Analog electronics
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