For assistance or to order, call (800) 531-5782
Revised 2/5/99
P T 6 6 2 0 S e r i e s
Application Notes
Mechanical Outline
Product Selector Guide
6 AMP 12V INPUT
INTEGRATED SWITCHING REGULATOR
• Single Device: 6A Output
Designed for stand-alone operation in
• Input Voltage Range: 9V to 14V
• Adjustable Output Voltage
• 83% Efficiency
• Remote Sense Capability
• Standby Function
applications requiring as much as 6A of
output current, the PT6620 is packaged
in a 14-Pin SIP (Single In-line Package)
and is available in a surface-mount con-
figuration.
• Over-Temperature Protection
Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.
The PT6620 series is a new addition
to Power Trends’ line of 12V bus Inte-
grated Switching Regulators (ISRs).
Pin-Out Information Ordering Information PT Series Suffix
(PT1234X)
PT6621¨ = +3.3 Volts
PT6622¨ = +1.5 Volts
PT6623¨ = +2.5 Volts
PT6624¨ = +3.6 Volts
PT6625¨ = +5.0 Volts
PT6626¨ = +9.0 Volts
Pin
1
Function
Remote Sense
Do Not Connect
STBY*- Standby
Vin
Case/Pin
Heat
Heat Spreader
Configuration
Spreader with Side Tabs
Standard Application
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
P
D
E
R
G
B
2
REMOTE SENSE
3
1
VIN
VOUT
4
4,5,6
11,12,13
PT6620
3
5
Vin
7,8,9,10
+
+
LOAD
6
Vin
C1
C2
STBY
COM
Q1
7
GND
COM
8
GND
Pkg Style 400
C1 = Required 330µF electrolytic
C2 = Required 330µF electrolytic
Q1= NFET-or Open Collector Gate
9
GND
Note: Back surface
of product is
conducting metal
10
11
12
13
14
GND
Vout
Vout
Vout
Vout Adjust
Specifications
PT6620 SERIES
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = 60°C, 200 LFM, pkg P
Ta = 25°C, natural convection
0.1*
0.1*
—
—
6.0**
6.5**
A
A
Input Voltage Range
Vin
0.1A ≤ Io ≤ 6.0A
V
o ≤ +5V
+9
—
—
+14
+14
V
V
+6V≤Vo≤+9V
Vo+3
Output Voltage Tolerance
Ta = 0 to 60°C
∆Vo
Voadj
Vin = +12V, Io = 6.0A
Pin 14 to Vo or ground
Vo-0.1
—
Vo+0.1
V
Output Voltage Adjust Range
Vo = +3.3V
Vo = +1.5V
Vo = +2.5V
Vo = +3.6V
Vo = +5.0V
Vo = +9.0V
2.3
1.4
1.9
2.5
2.9
5.2
—
—
—
—
—
—
4.5
2.7
3.7
4.8
6.5
10.0
V
Line Regulation
Load Regulation
Vo Ripple/Noise
Regline
Regload
Vn
+9V≤Vin≤+14V, Io = 6.0A
Vin = +12V, 0.1≤ Io≤6.0A
Vin = +12V, Io = 6.0A
—
—
±0.5
±0.5
±1.0
±1.0
%Vo
%Vo
Vo < +6V
Vo > +6V
—
—
50
1.0
—
—
mVpp
%Vo
Transient Response
with C2 = 330µF
ttr
Vos
Io step between 3.0A and 6.0A
Vo over/undershoot
—
—
100
150
—
—
µSec
mV
Efficiency
η
Vin = +12V, Io = 3.0A
Vo= +3.3/3.6V
—
—
—
—
—
84
68
76
86
93
—
—
—
—
—
%
%
%
%
%
Vo = +1.5V
Vo = +2.5V
Vo = +5.0V
Vo = +9.0V
Vin = +12V, Io =6.0A
Vo= +3.3/3.6V
Vo = +1.5V
Vo = +2.5V
Vo = +5.0V
Vo = +9.0V
—
—
—
—
—
83
66
75
85
92
—
—
—
—
—
%
%
%
%
%
* ISR will operate down to no load with reduced specifications.
** See SOA curves - Output power is limited to 30W maximum.
Note: The PT6620 Series requires a 330µF(output) and 330µF(input) electrolytic capacitors for proper operation in all applications.
48
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
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