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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
http://www.powertrends.com
6
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
Standard Application
V
O
ADJ
Ordering Information
PT6101
o
= +5 Volts
PT6102
o
= +3.3 Volts
PT6103
o
= +12 Volts
PT Series Suffix
(PT1234
X
)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
Pin-Out Information
Pin
Function
1
2
V
in
3
V
in
4
V
in
5
GND
6
GND
7
GND
8
GND
9
V
out
10
V
out
11
V
out
12
V
out
Adj
P T 6 1 0 0
S e r i e s
90% Efficiency
Adjustable Output Voltage
Internal Short Circuit Protection
Over-Temperature Protection
On/Off Control (Ground Off)
Small SIP Footprint
Meets Requirements for FCC
Part 15; Class B limits for Radiated
Emissions
Wide Input Range
The PT6100 Series is a line of High-
Performance 1 Amp, 12-Pin SIP (Single In-line
Package) Integrated Switching Regulators (ISRs)
designed to meet the on-board power conversion
needs of battery powered or other equipment
requiring high efficiency and small size. This high
performance ISR family offers a unique
combination of features combining 90% typical
efficiency with open-collector on/off control and
adjustable output voltage. Quiescent current in
the shutdown mode is less than 100μA.
1 AMP ADJUSTABLE POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
C
1
= Optional 1μF ceramic
Q
1
= NFET
C
2
= Required 100μF electrolytic
Inhibit
PT6100
2,3,4
5,6,7,8
9,10,11
12
V
IN
COM
COM
V
OUT
C2
+
1
INH
Q1
C1
Specifications
Characteristics
(T
a
=25
°
C unless noted)
Output Current
Short Circuit Current
Input Voltage Range
(Note: inhibit function cannot
be used with Vin above 30V.)
Output Voltage Tolerance
PT6100 SERIES
Min
0.1*
—
9
9
16
Symbols
I
o
I
sc
V
in
Conditions
Over V
in
range
V
in
= V
in
min
0.1
≤
I
o
≤
1.0 A
Typ
—
3.5
—
—
—
Max
1.0
—
26
30/38**
30/38**
Units
A
Apk
V
V
V
V
o
= 3.3V
V
o
= 5V
V
o
= 12V
V
o
Over V
Range, I
o
= 1.0 A
T
a
= 0°C to +60°C
Over V
in
range
0.1
≤
I
o
≤
1.0 A
V
in
=V
in
min, I
o
=1.0 A
50% load change
V
o
over/undershoot
V
in
=9V, I
o
=0.5A, V
o
=3.3V
V
in
=9V, I
o
=0.5A, V
o
=5V
V
in
=16V, I
o
=0.5A, V
o
=12V
Over V
in
and I
o
ranges
V
in
= 15V
I
o
= 0A, V
in
=10V
Below V
o
Above V
o
—
±1.0
±2.0
%V
o
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
with C
o
= 100μF
Efficiency
Reg
line
Reg
load
V
n
t
tr
V
os
η
—
—
—
—
—
—
—
—
400
—
—
See Application Notes.
±0.25
±0.25
±2
100
5.0
84
89
91
500
100
10
±0.5
±0.5
—
200
—
—
—
—
600
—
—
%V
o
%V
o
%V
o
μSec
%V
o
%
%
%
kHz
μA
mA
Switching Frequency
Shutdown Current
Quiescent Current
Output Voltage
Adjustment Range
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
o
I
sc
I
nl
V
o
T
a
-40
—
+85
°
C
T
a
Free Air Convection,
(40-60LFM)
V
in
=24V, I
o
=0.75A
Free Air Convection
(40-60LFM)
V
o
= 3.3V
V
o
= 5V
V
o
= 12V
V
o
= 3.3V
V
o
= 5V
V
o
= 12V
-40
-40
-40
—
—
—
-40
—
—
—
50
40
40
—
+85***
+85***
+80***
—
—
—
+125
—
°
C
Thermal Resistance
θ
ja
°
C/W
Storage Temperature
Mechanical Shock
T
s
°
C
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
—
500
G’s
Mechanical Vibration
—
10
—
G’s
Weight
* ISR will operate down to no load with reduced specifications.
** Input voltage cannot exceed 30V when the inhibit function is used. ***See Thermal Derating chart.
Note:
The PT6100 Series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
—
5.0
—
grams
Pkg Style 200