For assistance or to order, call (800) 531-5782
Revised 7/15/98
P T 6 6 0 0 S e r i e s
Application Notes
Mechanical Outline
Product Selector Guide
9 AMP ADJUSTABLE
INTEGRATED SWITCHING REGULATOR
• Single Device 9A Output
performance family of 14-Pin SIP
• Input Voltage Range: 3.1V to 6.0V
• Adjustable Output Voltage
• 90% Efficiency
• Remote Sense Capability
• Standby Function
(Single In-line Package) Integrated
Switching Regulators (ISRs), designed
for stand alone operation in applications
requiring as much as 9A of output cur-
rent (10A with a side heat tab).
• Over-Temperature Protection
Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.
The PT6600 series is a new addi-
tion to the Power Trends’ high
Pin-Out Information Ordering Information PT Series Suffix
(PT1234X)
PT6601¨ = +3.3 Volts
Case/Pin
Heat
Heat Spreader
Pin Function
Configuration
Spreader with Side Tabs
†
PT6602¨ = +1.5 Volts
PT6603¨ = +2.5 Volts
PT6604¨ = +3.6 Volts
PT6605¨ = +1.2 Volts
PT6606¨ = +1.8 Volts
1
2
3
4
5
6
Remote Sense
Do not connect
STBY*-Standby
Vin
Vin
Vin
Vertical Through-Hole
HorizontalThrough-Hole
Horizontal Surface Mount
P
D
E
R
G
B
Standard Application
†
†
VOADJ
REMOTE SENSE
†3.3V Input Bus Capable
14
1
7
8
9
10
11
12
13
14
GND
GND
GND
GND
Vout
VIN
VOUT
4,5,6
11,12,13
PT6600
3
7,8,9,10
+
+
LOAD
C1
C2
Pkg Style 400
STBY
COM
Q1
Vout
Vout
COM
Note: Back surface
of product is
conducting metal.
V
out Adjust
C1 = Required 330µF electrolytic
C2 = Required 330µF electrolytic
Q1= NFET-or Open Collector Gate
Specifications
PT6600 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*
—
—
9.0**
7.0**
A
A
Input Voltage Range
Vin
0.1A ≤ Io ≤ 8.0A
Vo= +2.5/3.3V
4.5
3.1
4.8
—
—
—
6.0
6.0
6.0
Vo= +1.5V
Vo= +3.6V
V
V
Output Voltage Tolerance
∆Vo
Vin = +5V, Io = 8.0A
Ta = 0°C to 65°C
Vo-0.1
—
Vo+0.1
Output Voltage Adjust Range
Voadj
Pin 14 to Vo or ground
Vinmin=+3.1V or Vo+1.2V
(whichever is greater)
Vo= +3.3V
Vo= +1.5V
Vo= +2.5V
Vo= +3.6V
2.25
1.27
1.80
2.50
—
—
—
—
4.20
2.65
3.50
4.30
V
Line Regulation
Load Regulation
Vo Ripple/Noise
Regline
Regload
Vn
4.5V ≤ Vin ≤ 6.0V, Io = 8.0A Vo= +3.3V
3.1V ≤ Vin ≤ 6.0V, Io = 8.0A Vo= +1.5V
4.5V ≤ Vin ≤ 6.0V, Io = 8.0A Vo= +2.5V
—
—
—
±7
±3
±7
±17
±8
mV
±13
Vin = +5V, 0.1 ≤ Io ≤ 8.0A
Vo= +3.3V
Vo= +1.5V
Vo= +2.5V
—
—
—
±17
±12
±13
±33
±23
±25
mV
Vin = 5V, Io = 8.0A
—
50
—
mVpp
Transient Response
with C2 = 330µF
ttr
Io step between 4.0A and 8.0A
Vo over/undershoot
—
—
100
150
—
—
µSec
mV
Vos
Efficiency
η
Vin = +5V, Io = 3.0A
Vo = +3.3/3.6V
Vo = +1.5V
—
—
—
—
—
—
90
76
85
83
68
76
—
—
—
—
—
—
%
%
%
%
%
%
Vo = +2.5V
Vin = +5V, Io = 8.0A
Vo = +3.3/3.6V
Vo = +1.5V
Vo = +2.5V
* ISR will operate down to no load with reduced specifications.
** See SOA curves
Note: The PT6600 Series requires two 330µF electrolytic capacitors (input and output) for proper operation in all applications.
See PT6000/7000 Series Capacitor application note.
6
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com