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24
For assistance or to order, call
(800) 531-5782
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
Standard Application
C
1
= Optional electrolytic (100μF)
C
2
= Required 100μF electrolytic (No tantalum)
See capacitor application note on page 43.
3 AMP HIGH-PERFORMANCE
ADJUSTABLE ISR
P T 6 3 0 5
S e r i e s
Specifications
Characteristics
(T
A
=25C unless noted)
Output Current
Current Limit
Short Circuit Current
Input Voltage Range
PT6305 SERIES
Min
0.3
—
—
4.5
4.5
4.5
4.5
3.2
1.7
2.0
1.1
—
—
—
—
—
—
—
—
—
—
—
—
—
Symbols
I
o
I
cl
I
sc
V
in
Conditions
4.5
≤
V
in
≤
V
in
MAX
V
in
= +5V
V
in
= +5V
0.3A
≤
I
o
≤
3.0A
Typ
—
3.6
5.0
—
—
—
—
3.3
1.8
2.1
1.2
±25
±25
66
200
200
85
74
77
63
80
68
72
57
Max
3.0**
5.0
—
9
9
9
6.0
3.4
1.9
2.2
1.3
±50
±50
—
—
—
—
—
—
—
—
—
—
—
Units
ADC
ADC
Apk
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
mV
mV
mV
μSec
mV
%
%
%
%
%
%
%
%
PT6305N
PT6306N
PT6307N
PT6308N
PT6305N
PT6306N
PT6307N
PT6308N
Static Voltage Tolerance
V
o
V
= +5V, I
= 3.0A
0°C
≤
T
a
≤
+70°C
Line Regulation
Load Regulation
V
o
Ripple/Noise pk-pk
Transient Response
with C
2
= 100μF
Efficiency
Reg
line
Reg
load
V
n
t
tr
V
os
η
4.5V
≤
V
in
≤
5.5V, I
o
= 3.0A
V
in
= +5V, 0.3
≤
I
o
≤
3.0A
V
in
= 5V, I
o
= 3.0A
I
o
step between 1.5A and 3.0A
V
o
over/undershoot
V
in
= +5V, I
o
= 1.5A
PT6305N
PT6306N
PT6307N
PT6308N
PT6305N
PT6306N
PT6307N
PT6308N
V
in
= +5V, I
o
= 3.0A
Switching Frequency
o
4.5
≤
V
in
≤
V
MAX
0.3A
≤
I
o
≤
3.0A
Free Air Convection (40-60 LFM)
Over V
in and
I
o
Ranges
Free Air Convection (40-60 LFM)
—
500
650
800
KHz
Operating Temperature
T
a
0
—
+70*
°C
Thermal Resistance
Storage Temperature
Mechanical Shock
θ
ja
T
s
Per Mil-STD-883D, Method 2002.3 Condition A, 1 msec, Half Sine,
mounted to a fixture
Per Mil-STD-883D, Method 2007.2 Condition A, 20-2000 Hz
—
—
—
Non-condensing
—
-40
25
—
—
+125
°C/W
°C
—
—
500
G’s
Mechanical Vibration
Weight
Relative Humidity
*See Thermal Derating chart.
**
The PT6305 Series can be easily paralleled to provide output current in multiples of 3 amps. Please contact a Power Trends’ Application Engineer for the
appropriate application note.
Note:
The PT6305 Series requires a 100μF electrolytic capacitor for proper operation in all applications.
—
—
0
—
11.2
—
15
—
95
G’s
grams
%
V
IN
(+)
COM
PT6305,6,7,8
5,6,7,8
9,10,11
COM
V
OUT
(+)
C1
C2
V
O
Adjust
2,3,4
12
Ordering Information
PT6305
n
= +3.3 Volts
PT6306
n
= +1.8 Volts
PT6307
n
= +2.1 Volts
PT6308
n
= +1.2 Volts
(For dimensions, see page 66.)
Pin-Out Information
Pin No.
1
2
3
4
5
6
Function
N/C
V
in
V
in
V
in
GND
GND
Pin No.
7
8
9
10
11
12
Function
GND
GND
V
out
V
out
V
out
Adjust
(See page 40.)
Single-Device 5V to 3V Power
85% Efficiency
Small SIP Footprint:
0.36" x 2.00” x 0.60"(H)
Wide Input Voltage Range:
+4.5V to +9.0V
Internal Short Circuit Protection
Over-Temperature Protection
The PT6305N is Power Trends’
new high performance +5V to +3.3V, 3
Amp, 12-Pin SIP (Single In-line-
Package) Integrated Switching
Regulator (ISR). This high-perfor-
mance ISR allows easy integration of
low-power 3.3V logic IC’s into existing
5V systems without redesigning the
central power supply. Only one external
capacitor is required for proper
operation. The PT6306,7,8 can be used
to power high-speed data buses (+2.1V),
or the new GTL (+1.2V) logic buses.
PT Series Suffix
(PT1234
X
)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
(See Thermal Application Notes on page 44 for heat tab
application data.)
Heat Tab Configuration
None
N
A
C
Side
R
G
B
1
2
1
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