For assistance or to order, call
(800) 531-5782
PT6420
Series
3 AMP ADJUSTABLE INTEGRATED
SWITCHING REGULATOR
•
•
•
•
•
Adjustable Output Voltage
85% Efficiency
Small SIP Footprint
Input Voltage Range: 4.5V to 5.5V
Remote Sense Capability
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
The PT6420 is a new addition to
the Power Trends high performance
+5V to +3.3V, 3Amp family of 14-Pin
SIP (Single In-line Package) Integrated
Switching Regulators (ISRs). Only two
external capacitors are required for
proper operation.
Please note that this product does
not include short circuit protection.
Pin-Out Information
Pin
1
Ordering Information
PT6424¨
PT6425¨
PT6426¨
PT6427¨
PT6428¨
PT6429¨
= +1.5 Volts
= +3.3 Volts
= +1.8 Volts
= +2.1 Volts
= +1.2 Volts
= +2.5 Volts
PT Series Suffix
(PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
Function
Remote Sense
Do not connect
Do not connect
V
in
V
in
V
in
GND
GND
GND
GND
V
out
V
out
V
out
V
out
Adjust
Standard Application
Remote
Sense
1
2
3
4
5
6
C2
100µF
R2
(V
O
DOWN)
P
D
E
V
IN
4,5,6
PT6420
7,8,9,10
14
11,12,13
V
OUT
R1
C1
100µF
COM
+
(V
O
UP)
+
7
COM
8
9
10
11
12
13
14
Pkg Style 310
PT6420
POWER TRENDS
C
1
= Required 100µF electrolytic
C
2
= Required 100µF electrolytic
Note: Back surface
of product is
conducting metal.
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
Current Limit
Input Voltage Range
Output Voltage Tolerance
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
PT6420 SERIES
Conditions
4.5V
≤
V
in
≤
5.5V
V
in
= +5V
0.1A
≤
I
o
≤
3.0A
V
in
= +5V, I
o
= 3.0A
0°C
≤
T
a
≤
+70°C
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
V
o
= 3.3V
V
o
= 1.8V
V
o
= 2.1V
V
o
= 1.2V
Min
0
—
4.5
V
o
-0.05
—
—
—
—
—
—
—
—
—
500
0
Free Air Convection (40-60 LFM)
At Vin= 5V, Io=2.5A
Free Air Convection (40-60 LFM)
—
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
—
—
0
—
-40
—
—
—
Typ
—
3.6
—
3.3
±10
±10*
66
200
200
85
74
77
63
650
—
—
25
—
500
15
6.5
Max
3.0
5.0
5.5
V
o
+0.05
±25
±25*
165
—
—
—
—
—
—
800
+85
+70**
—
+125
—
—
—
Units
A
A
V
V
mV
mV
mVpp
µSec
mV
%
%
%
%
kHz
°C
°C
°C/W
°C
G’s
G’s
grams
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
ƒ
o
T
a
T
a
4.5V
≤
V
in
≤
5.5V
0.3A
≤
I
o
≤
3.0A
θ
ja
T
s
*When used with remote sense function.
**See Thermal Derating chart.
Note:
The PT6420 Series requires two 100µF electrolytic or tantalum capacitors for proper operation in all applications.
26
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
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